A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete backfilling at structures,
culverts, pipes, conduits, direct buried cables and such other locations
as shown on the plans or as ordered by the Engineer.
B.
Standard details. Backfill shall be placed in accordance
with the requirements of the construction standards of the Town of
Union and shall conform to Section 200, Earthwork, of the New York
State Department of Transportation Standard Specifications of latest
issue.
C.
Material.
(1)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(2)
Compaction shall conform to the requirements of Section
203-3.12 of the New York State Department of Transportation Standard
Specifications of latest issue.
(3)
Backfill shall conform to the requirements of Section
203-3.15 of the New York State Department of Transportation Standard
Specifications of latest issue.
D.
Method.
(1)
The placing of this material shall be done by a method
approved by the Engineer. No segregation of large or fine particles
will be allowed, but the material, as placed, shall be well graded,
with no pockets of fine material. Water shall be added in such amounts
as the Engineer may deem necessary to obtain satisfactory compaction.
(2)
When the moisture content of the layer is within the
limits for proper compaction, the entire surface shall be compacted
with approved compaction equipment, the minimum number of passes required
on all portions of each layer shall be six unless otherwise determined
by the Engineer, after appropriate field density tests to evaluate
the compactive efficiency of the equipment.
(3)
The material shall be placed in horizontal layers
not to exceed six inches in thickness prior to compaction, unless
otherwise directed.
(4)
The excavated trench shall be backfilled to one foot
above the pipe with run-of-bank gravel, compacted in six-inch lifts
with no stones larger than three inches. In pavement areas, the remainder
of the trench shall be backfilled with run-of-bank gravel, compacted
in twelve-inch lifts with no stones larger than three inches. In open
areas, the remainder of the trench shall be backfilled with suitable
excavated material, compacted in twelve-inch lifts with no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
(5)
All materials used by the contractor, for his convenience,
to make up for losses in settlement or construction irregularities,
without written permission by the Engineer, will be done at the contractor's
expense.
E.
Protection of new work. The contractor shall assume
full responsibility for any contamination and/or degradation of any
part of this course during construction and shall, at his own expense,
remove any and all portions of this course which do not conform to
the requirements of these specifications and replace these portions
with specified material.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
A.
Description. Under this section, the contractor shall
furnish all plant, labor, material and equipment necessary to complete
the construction of an asphalt concrete pavement over a prepared gravel
subbase to repair or replace existing pavements as shown on the plans,
in the itemized proposal, or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Bituminous pavement replacement
shall be constructed in accordance with the construction standards
of the Town of Union or Broome County, within their respective rights-of-way.
(2)
Excavation. All material of every description and
nature, necessary for the proper installation of the work, shall be
excavated down to the subgrade elevation. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
directed. Where excavated material is natural gravel, the excess shall
be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
C.
Material.
(1)
Asphalt concrete shall conform to the requirements
for Section 400, Bituminous Pavements, of the New York State Department
of Transportation Standard Specifications of latest issue.
(2)
Select granular material shall conform to Item 304.05,
Subbase Course, Type 4, of the New York State Department of Transportation
Standard Specifications of latest issue.
D.
Method.
(1)
The existing street surface shall be removed to a
depth as shown on the plans or as ordered by the Engineer. The exposed
gravel subgrade shall be proof rolled to grade, to the satisfaction
of the Engineer.
(2)
A subbase course shall be constructed upon the previously
prepared subgrade. The subgrade shall consist of 12 inches of material
conforming to the requirements for Section 304, Subbase Course, of
the New York State Department of Transportation Standard Specifications
of latest issue. This material shall be tamped using a trench roller
or vibratory plate type compactor. Prior to placing of the asphalt
concrete, all holes, humps or irregularities in the subbase shall
be removed by suitable means and then recompacted with an acceptable
power roller.
(3)
The pavement shall be placed to the cross slope of
the existing pavement or as ordered by the Engineer. At the junction
of the old and new pavements, special care shall be exercised, in
the construction, so that no humps, depressions or irregularities
exist in the finished surface. The old pavement shall be square cut
and an approved bituminous tack coat applied at the juncture of the
new and old pavement. For trench repair, the square cut shall be a
distance of one foot back of all excavations, to provide for firm
support of the new pavement, as shown in the construction details
or as ordered by the Engineer.
(4)
Asphalt concrete, in the Town rights-of-way, shall
be placed in two layers or as ordered by the Engineer. The first layer
to consist of a minimum compacted thickness of 21/2 inches of Type
3 Binder. The second layer to consist of a minimum compacted thickness
of 11/2 inches of Type 6 Top.
(5)
The asphalt concrete shall not be applied over manhole
covers and frames or curbs and gutters. Any material adhering to the
covers, frames or curbs and gutters shall be removed at the contractor's
expense.
(6)
All materials used by the contractor, for his convenience,
to make up for losses in settlement or construction irregularities,
without written permission by the Engineer, will be done at the contractor's
expense.
E.
Protection of new work. The protection of the new
work shall be the sole responsibility of the contractor. Any work
which is damaged shall be removed and replaced at the expense of the
contractor.
F.
Cold weather protection. Asphalt concrete shall not
be applied when the ambient temperature is below 50° F. or when
the surface on which it is to be laid is below 45° F.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, material and equipment necessary to complete
clearing, excavation or filling, form setting, preparation of subgrade
and concrete work for the construction of curb or curb and gutter
as shown in the plans or proposals or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Curb and combined curb and gutter
shall be constructed in accordance with the construction standards
of the Town of Union.
(2)
Mailbox relocation. Mailboxes and their supporting
apparatus which meet postal requirements for mail delivery prior to
construction shall meet these same postal requirements after construction.
(3)
Removal of existing trees and shrubs. Trees and shrubs
up to 12 inches diameter which interfere with the new construction
shall be cut and stumps shall be removed. Trees or shrubs which are
marked for preservation shall be moved and replanted as ordered by
the Engineer.
(4)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. All existing lawns and
natural or filled embankments shall be cut back to form a 1:2 backslope
as measured from a point one foot back of the curb or to the sidewalk,
where sidewalks exist. Where necessary, additional material shall
be brought to the site to complete the backfilling. All disturbed
areas shall be raked free of large lumps of dirt, stones larger than
three inches and other objectionable material which shall be removed
from the site. All excess material produced from excavation shall
be disposed of by the contractor unless otherwise directed. Where
the excavated material is natural gravel, the excess shall be stockpiled
as directed for use by the Town.
(5)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
(6)
Expansion joints shall be formed of nonextruding premoulded
expansion joint material which extends completely through the joint
and shall be placed at intervals not greater than 50 feet in curb
or curb and gutter.
(7)
Construction joints shall be formed with metal dividers
or with wooden dividers which extend through the full thickness of
the curb or curb and gutter and which are to be fully removed from
the joint prior to tooling of the edges. Joints shall be placed at
intervals every five feet in curb and gutter.
C.
Material.
(1)
Concrete shall conform to the requirements for Portland
Cement Concrete, General, Section 501, of the New York State Department
of Transportation Standard Specifications of latest issue modified
as follows:
(a)
Portland cement for all concrete shall be an
air-entraining cement conforming to Type 2A Cement.
(b)
Minimum cement content for curb or curb and
gutter shall be seven bags per cubic yard irrespective of strength.
(c)
Concrete may be field mixed or transit mixed
concrete, minimum strength at 28 days equal to or greater than 4,500
pounds per square inch.
(2)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Expansion joints shall be premoulded bituminous joint
material conforming to the requirement of ASTM Designation D1751.
Thickness shall be 1/2 inch unless shown otherwise in the construction
drawings.
(4)
Membrane curing compound shall conform to specifications
for Section 711-05 of the New York State Department of Transportation
Standard Specifications of latest issue.
(5)
Mixing water shall be potable.
D.
Method. Forms shall be well oiled, set to true line
and grade as shown in the plans or as ordered. Form construction may
be of steel or wood, except for short radius curbs only wood or flat
steel plates will be permitted. The subbase shall be thoroughly compacted
using vibratory compaction equipment. Hand tamping may be used if
the total depth of fill required does not exceed six inches. Concrete
shall be mixed for at least 11/2 minutes until the color is uniform
and there is uniform distribution of materials. Transit mixed concrete
shall be completely discharged within 45 minutes after the mixing
water is introduced into the mass. The concrete shall contain just
enough water so that the concrete may be tamped without excessive
displacement or splashing. Slump shall not be in excess of two inches.
The top shall be floated to a true even surface without bringing free
water to the surface and shall be given a broom finish. Face forms
for curb or curb and gutter construction shall be removed as soon
as practical to permit finishing of the curb face. Immediately after
finishing, the concrete shall be cured by covering with white pigmented
membrane curing compound.
E.
Backfill. The excavated area between the curb or curb
and gutter and the existing street pavement shall be backfilled with
run-of-bank gravel, the cost of which shall be included in the price
bid for concrete curb or curb and gutter. The excavated area behind
the curb or curb and gutter shall be backfilled with suitable excavated
material, free of blacktop or other unsuitable material, unless otherwise
ordered by the Engineer.
F.
Protection of new work. New depressed curb or curb
and gutter sections shall be protected from vehicular traffic for
a minimum of two days or longer as necessary. The protection of the
new work shall be the sole responsibility of the contractor. Concrete
which is cracked or otherwise damaged shall be removed and replaced
at the expense of the contractor.
G.
Cold weather protection. No concrete shall be done
prior to April 1 or later than November 15 without the written approval
of the Engineer. Special cold weather precautions will be issued in
the event that concrete operations must be conducted during freezing
weather.
H.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
In the presence of the Subdivision Inspector, test
cylinders shall be taken from every pour, regardless of quantity of
concrete on the truck. Cylinders shall be made and tested by an approved
commercial testing laboratory. The cost of all samples and other expenses
incurred in making the test cylinders ready for inspection, sampling
and/or testing shall be included in the unit prices bid for the various
items in the contract. The test results shall be reported to the Engineer,
in writing, for review and determination of acceptability. All test
results shall be identified by job name, date sample was taken, date
test occurred, slump of concrete and precise location of the placed
concrete.
[Amended 12-2-2009 by L.L. No. 15-2009]
(3)
Slump
test shall be taken from every pour, regardless of quantity of concrete
on the truck, by an approved commercial testing laboratory. Test results
shall be recorded on test cylinder identification tag.
[Added 12-2-2009 by L.L. No. 15-2009[1]]
[1]
Editor’s Note: This local law also provided for the
renumbering of former Subsection H(3) as Subsection H(4).
(4)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, materials, equipment and appliances and
perform all operations necessary to complete clearing and excavation
for the placement of bituminous coated, galvanized corrugated steel
pipe of the size, gauge, shape and corrugation as shown on the plans,
in the itemized proposal or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer. Where necessary, additional material shall be brought
to the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
shall be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(5)
Joints shall be connected by use of coupling bands
as required for the various pipes as called for on the plans, in the
proposal or as ordered by the Engineer.
C.
Material.
(1)
Corrugated steel (CSP) pipe and fittings shall conform
to the requirements of Section 707-02, Round Corrugated Steel Pipe
and Pipe Arches, of the New York State Department of Transportation
Standard Specifications of latest issue.
(2)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Pipe bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 602 of
the New York State Department of Transportation Standard Specifications
of latest issue.
D.
Method. All pipe shall be laid true to line and grade
and shall have a full, firm and even bearing. Bedding shall consist
of sand placed to a depth of four inches in soil and six inches in
rock, unless otherwise directed by the Engineer. Pipe laying shall
begin at the downgrade end and progress in the upgrade direction.
The backfill shall be thoroughly compacted using vibratory compaction
equipment.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with run-of-bank gravel, compacted in six-inch
lifts, no stones larger than three inches. In pavement areas, the
remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches except for the top one foot of the trench, which
shall be run-of-bank gravel.
F.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any pipe shall
be done at the contractor's risk. When determined by the Engineer,
any pipe that is damaged or disturbed through any cause, shall be
replaced, as ordered by the Engineer, at the expense of the contractor
at no cost to the owner.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required test shall be removed and replaced by the contractor
at his own expense.
[Added 12-2-2009 by L.L. No. 15-2009]
A.
Description. Under this item, the contractor shall furnish all plant,
labor, materials, equipment, appliances and perform all operations
necessary to complete clearing and excavation for the placement of
corrugated polyethylene pipe of the size and corrugation as shown
on the plans, in the itemized proposal or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Pipe shall be placed in accordance with the
requirements of the construction standards of the Town of Union.
(2)
Excavation and backfill. All material of every description and
nature, necessary for proper installation of the work, shall be excavated
down to the depth as shown on the plans or as ordered by the Engineer.
Where necessary, additional material shall be brought to the site
to complete the backfilling. All excess material produced from excavation
shall be disposed of by the contractor, unless otherwise directed.
Where the excavated material is natural gravel, the excess shall be
stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable material
where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the plans or
as ordered by the Engineer.
(5)
Joints. Pipe shall be joined using a bell and spigot joint meeting
AASHTO M252, AASHTO M294 or ASTM F2306 as required for the various
pipes, as called for on the plans, in the proposal or as ordered by
the Engineer. Bell end of pipe will be placed on the upgrade end.
Coupling bands may be used in certain circumstances, with the approval
of the Engineer.
C.
Materials.
(1)
Corrugated polyethylene pipe and fittings.
(a)
Corrugated polyethylene pipe and fittings shall conform to the
requirements of:
[1]
AASHTO M252, Specification for Corrugated Polyethylene Drainage
Tubing, three- to ten-inch diameter.
[2]
AASHTO M294, Specification for Corrugated Polyethylene Pipe,
twelve- to forty-eight-inch diameter.
[3]
ASTM D1056, Specification for Flexible Cellular Materials, sponge
or expanded rubber.
[4]
ASTM D1248, Specification for Polyethylene Plastics Molding
and Extrusion Materials.
[5]
ASTM D3350, Specification for Polyethylene Plastics Pipe and
Fittings Materials.
[6]
ASTM D2321, Practice for Underground Installation of Flexible
Thermoplastic Sewer Pipe.
(b)
The product supplied under this specification shall be high-density
polyethylene corrugated exterior/smooth interior pipe. Four- through
ten-inch diameters shall meet all the requirements of AASHTO M252
with the addition that the pipe shall have a smooth interior liner.
Twelve- to thirty-six-inch diameters shall conform to AASHTO M294
Type S. Forty-two-inch and forty-eight-inch diameters shall have minimum
pipe stiffness of 20 psi and 17 psi, respectively, at 5% deflection;
and shall meet all other requirements of AASHTO M294.
(c)
Material shall meet ASTM D1248 Type III, Category 4, Grade P33,
Class C; or ASTM D3350 Cell Classification 324420C.
(d)
Minimum conveyance factors shall be based on a Manning "n" value
of 0.010 and shall be as shown in Table 1.
|
Table 1
| ||||
|---|---|---|---|---|
|
Conveyance Factors
| ||||
|
Nominal Diameter
(inches)
|
Conveyance Factor
|
Nominal Diameter
(inches)
|
Conveyance Factor
| |
|
4
|
2.5
|
18
|
136.4
| |
|
6
|
7.3
|
24
|
293.9
| |
|
8
|
15.7
|
30
|
532.9
| |
|
10
|
28.5
|
36
|
866.6
| |
|
12
|
46.3
|
42
|
1,307.2
| |
|
15
|
83.9
|
48
|
1,866.4
| |
(e)
If couplings are used, coupling bands shall cover at least one
full corrugation on each section of pipe. When gasketed coupling bands
are required, the gasket shall be made of closed-cell synthetic expanded
rubber meeting the requirements of ASTM D1056, Type 2. Gaskets shall
be installed on the coupling band by the pipe manufacturer. All coupling
bands shall meet or exceed the soil tightness requirement of the AASHTO
Standard Specifications for Highway Bridges, Section 23, paragraph
23.3.1.5.4 (e). Pipe fittings shall conform to AASHTO M252 or AASHTO
M294. Fittings approved by the Engineer are also acceptable.
(2)
Backfill shall conform to Item 203.07, Select Granular Fill,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(3)
Pipe bedding shall be sand, or approved equal which meets the
requirements for bedding as set forth in Section 620 of the New York
State Department of Transportation Standard Specifications of latest
issue.
D.
Method. Installation shall be in accordance with ASTM D2321 and as
recommended by the pipe manufacturer. All pipe shall be laid true
to line and grade and shall have a full, firm and even bearing. Bedding
shall consist of sand placed to a depth of four inches in soil and
six inches in rock, unless otherwise directed by the Engineer. Pipe
laying shall begin at the downgrade end and progress in the upgrade
direction. The backfill shall be thoroughly compacted using vibratory
compaction equipment.
E.
Backfill. The excavated trench shall be backfilled to one foot above
the pipe with bedding material. In pavement areas, the remainder of
the trench shall be backfilled with run-of-bank gravel, compacted
in twelve-inch lifts, no stones larger than three inches. In open
areas, the remainder of the trench shall be backfilled with suitable
excavated material, compacted in twelve-inch lifts, no stones larger
than 12 inches, except for the top one foot of the trench, which shall
be run-of-bank gravel.
F.
Protection of new work. Movement of construction equipment and all
other vehicles and loads over and adjacent to any pipe shall be done
at the contractor's risk. When determined by the Engineer, any
pipe that is damaged or disturbed through any cause shall be replaced,
as ordered by the Engineer, at the expense of the owner.
G.
Samples and testing.
(1)
All materials and products to be used in the construction shall
meet the quality requirements of Section 700, Materials Details, of
the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet the required
test shall be removed and replaced by the contractor at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, material, equipment and appliances and perform
all operations necessary to complete installation of galvanized steel
end sections attached to the inlet and/or outlet ends of corrugated
steel pipe and pipe arches of dimensions specified, as shown on the
plans, in the itemized proposal or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. End sections shall be placed in
accordance with the requirements of the construction standards of
the Town of Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer. Where necessary, additional material shall be brought
to the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
directed. Where the excavated material is natural gravel, the excess
shall be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
C.
Material.
(1)
Galvanized steel end sections shall conform to the
requirements of Section 707-10, Galvanized Steel End Sections, of
the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Bedding shall be sand or an approved equal which meets
the requirements for bedding as set forth in Section 620 of the New
York State Department of Transportation Standard Specifications of
latest issue.
D.
Method. All end sections shall be laid true to line
and grade and shall have a full, firm and even bearing. Bedding shall
consist of sand placed to a depth of four inches in soil and six inches
in rock, unless otherwise directed by the Engineer.
E.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any end section
shall be done at the contractor's risk. When determined by the Engineer,
any end section that is damaged or disturbed through any cause shall
be replaced, as ordered by the Engineer, at the expense of the contractor
and at no cost to the owner.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor equipment, appliances and materials and perform
all operations necessary to furnish and place gravel filter material
to complete backfill at structures, pipes and such other locations
as shown on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Gravel filter material shall be
placed in accordance with the requirements of the construction standards
of the Town of Union and shall conform to Section 605, Underdrains,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. All disturbed areas shall
be raked free of large lumps of dirt, stones larger than three inches
and other objectionable material which shall be removed from the site.
All excess material produced from excavation shall be disposed of
by the contractor, unless otherwise directed. Where the excavated
material is natural gravel, the excess shall be stockpiled, as directed,
for use by the Town.
C.
Material. Gravel filter material shall conform to
Item 605.0901, Underdrain Filter, Type I, of the New York State Department
of Transportation Standard Specifications of latest issue.
D.
Method.
(1)
The placing of this material shall be done by a method
approved by the Engineer. No segregation of large or fine particles
will be allowed, but the material, as placed, shall be well graded,
with no pockets of fine material.
(2)
A carefully leveled and thoroughly compacted bed of
this material shall be prepared just prior to the placement of the
underdrain pipe. The thickness of the bed shall be four inches in
soil, six inches in rock, as shown on the plans or as ordered by the
Engineer.
(3)
After the pipe has been placed and properly aligned
on the bed, gravel filter material shall be hand shoveled around the
sides and to a level of six inches above the top of the underdrain
pipe without compaction. Subsequent lifts shall be no more than six
inches thick prior to compaction and shall be compacted by two passes
of an approved vibrating pad or drum-type compactor.
(4)
Backfilling will then be continued in accordance to
the specifications for excavation, trenching and backfilling, using
suitable material from excavation or as ordered by the Engineer.
E.
Protection of new work. The contractor shall assume
full responsibility for any contamination and/or degradation of any
part of this course during construction and shall, at his own expense,
remove any and all portions of this course which do not conform to
the requirements of these specifications and replace these portions
with specified material.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary for the maintenance of traffic for
the duration of the contract and the protection of the traveling public
from all damages to person and property within the limits of and for
the duration of the contract in accordance with the plans and specifications
or as directed by the Engineer.
B.
General requirements.
(1)
Under this item, it is the intent that all signs,
barriers and channelization, lighting and signals, flagmen and typical
applications conform to Subchapter G, Maintenance and Construction
Traffic Control of the New York State Manual of Uniform Traffic Control
Devices of latest issue.
(2)
Maintenance and protection of traffic shall conform
to the requirements of Section 619 of the New York State Department
of Transportation Standard Specifications of latest issue.
C.
Method.
(1)
The contractor shall maintain and protect traffic
by so conducting his construction operations that the traveling public
is subjected to a minimum of delay and hazard. Traffic to and from
properties adjacent to that portion of the highway between the contract
limits shall be maintained at all times.
(2)
Where the width adjacent to construction operations
is insufficient to accommodate two-way traffic, turnouts 100 feet
long and spaced not more than 500 feet apart shall be constructed
by the contractor unless other provisions for accommodating traffic
are shown or indicated on the plans or an alternate method is proposed
by the contractor and approved. During dry weather the contractor
shall treat the traveled way with water and/or calcium chloride at
such locations and in a manner as the Engineer may direct.
(3)
The contractor shall maintain traffic at all locations
in an approved manner.
(4)
The contractor shall perform the following additional
requirements, subject to the approval of the Engineer, in order that
traffic will be adequately maintained and protected. He shall:
(a)
Keep the surfaces of the traveled way free from
mounds, depressions and obstructions, of any character, which might
present a hazard or annoyance to traffic. Depressions in hard surface
pavements shall be filled with approved bituminous patching material.
(b)
Keep the surface of all pavement used by the
public free and clean of all dirt, debris, stones, timbers or other
obstruction to provide a safe traveled way.
(c)
Furnish and erect approved signs for the directing
of traffic, danger signs for curves, narrow pavement and other dangerous
locations and road closure signs.
(d)
Furnish and erect road closure barricades which
shall be adequately lighted at night and on which red danger lights
shall be displayed and provide battery-operated flashers on all barricades.
(e)
Furnish and erect temporary barricades and guide
railing at steep declivities and other points of hazard.
(f)
Maintain, relocate and repair existing directional
and warning signs.
(g)
Provide for the erection of suitable canvases
and screens to protect the public from paint spray, dripping paint,
sand blasts and other falling material and objects.
(h)
Provide for the adequate lighting at night of
all signs, barricades and points of special hazard, using electricity
when available.
(i)
Provide watchmen and flagmen as may be necessary
for the protection of traffic and provide flagmen at either end of
any area restricted to one-way traffic.
(5)
If, upon notification by the Engineer, the contractor
fails to correct any unsatisfactory condition within 24 hours of being
so directed, the Engineer will immediately proceed with adequate forces
to properly maintain the project and the entire cost of such maintenance
shall be deducted from any moneys due the contractor under his contract.
D.
Samples and testing.
[Amended 8-1-1990 by L.L. No. 12-1990]
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor material and equipment necessary to complete
clearing, excavation or filling, form setting, preparation of subgrade
and concrete work for the placement of the miscellaneous concrete
as shown in the plans or proposal or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Miscellaneous concrete shall be
placed in accordance with the construction standards of the Town of
Union.
(2)
Removal of existing trees and shrubs. Trees and shrubs
up to 12 inches in diameter which interfere with the new construction
shall be cut and stumps shall be removed. Trees or shrubs which are
marked for preservation shall be moved and replanted as ordered by
the Engineer.
(3)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. All existing lawns and
natural or filled embankments shall be cut back to form a 1:2 backslope.
Where necessary, additional material shall be brought to the site
to complete the backfilling. All disturbed areas shall be raked free
of large lumps of dirt, stones larger than three inches and other
objectionable material which shall be removed from the site. All excess
material produced from excavation shall be disposed of by the contractor,
unless otherwise directed. Where the excavated material is natural
gravel, the excess shall be stockpiled, as directed, for use by the
Town.
(4)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
C.
Material.
(1)
Concrete shall conform to the requirements for, Portland
Cement Concrete, General, Section 501 of the New York State Department
of Transportation Standard Specifications of latest issue modified
as follows:
(a)
Portland cement for all concrete shall be an
air-entraining cement conforming to Type 2A Cement.
(b)
Minimum cement content for miscellaneous concrete
shall be seven bags per cubic yard irrespective of strength.
(c)
Concrete may be field mixed or transit mixed
concrete, minimum strength at 28 days equal to or greater than 4,500
pounds per square inch.
(2)
Run-of-bank gravel shall conform to Item 203.07, Selected
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Mixing water shall be potable.
(4)
Form work. Suitable forms, if required, shall be provided
and must be acceptable to the Engineer.
D.
Method. Forms shall be set true line and grade as
shown in the plans or as ordered by the Engineer. Form construction
shall be of suitable material and acceptable to the Engineer. The
subbase shall be thoroughly compacted using vibratory compaction equipment.
Hand tamping may be used if the total depth of fill required does
not exceed six inches. Concrete shall be mixed for at least 11/2 minutes
until the color is uniform and there is uniform distribution of materials.
Transit mixed concrete shall be completely discharged within 45 minutes
after the mixing water is introduced into the mass. The concrete shall
be thoroughly tamped to form a dense homogeneous mass. The concrete
shall contain just enough water so that the concrete may be tamped
without excessive displacement or splashing. Slump shall not be in
excess of two inches.
E.
Backfill. The excavated area shall be backfilled with
suitable excavated material, unless otherwise ordered by the Engineer.
F.
Protection of new work. The protection of the new
work shall be the sole responsibility of the contractor. Concrete
which is cracked or otherwise damaged shall be removed and replaced
at the expense of the contractor.
G.
Cold weather protection. No concrete work shall be
done prior to April 1 or later than November 15 without written approval
of the Engineer. Special cold weather precautions will be issued in
the event that concrete operations must be conducted during freezing
weather.
H.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Test cylinders shall be taken from every pour, in
the presence of the inspector, and sent to an approved testing facility.
The cost of all samples and any other expenses incurred in making
the test cylinders ready for inspection, sampling and/or testing shall
be included in the unit prices bid for the various items in the contract.
The test results shall be reported to the Engineer, in writing, for
review and determination of acceptability. All test results shall
be identified by job name and date sample was taken.
(3)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete the installation of new
water services as shown on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Water services shall be installed
in accordance with the requirements of the construction standards
of the Town of Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the necessary depth. Where necessary, additional
materials shall be brought to the site to complete backfilling. All
excess material produced from excavation shall be disposed of by the
contractor unless otherwise directed. Where the excavated material
is natural gravel, the excess shall be stockpiled as directed for
use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
C.
Material.
(1)
Pipe shall be Type "K" copper, three-fourths-inch
diameter.
(2)
Corporation stops shall be Mueller H 15000.
(3)
Splices shall be copper to copper Mueller 15405.
(4)
Curb stops shall be Mueller H 15200.
(5)
Plugging shall be with Solid Copper Disc Mueller H
15535.
(6)
Curb boxes shall be Erie Style Mueller H 10314 with
Mueller H 87081 lids and Mueller H 82866 rods 45 inches in length.
(7)
Excavation shall conform to the requirements for Section
203, Excavation and Embankment, of the New York State Department of
Transportation Standard Specifications of latest issue.
(8)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
D.
Method.
(1)
The pipe shall be placed in accordance with the details
as shown on the Standard Detail Sheet or as ordered by the Engineer.
Curb boxes shall be located two feet and six inches back of the curbline.
All corporations shall be wet taps and the entire line tested under
line pressure. Minimum depth of water service line shall be five feet
and zero inches.
(2)
When the water service is located immediately under
or over the storm sewer, the pipe shall be protected by an envelope
of insulating material which shall be a minimum of one foot square
in cross section with the water service in the center of the insulating
material. The insulating material shall be Gilso Gard as manufactured
by the American Gilsonite Company, Salt Lake City, Utah. The insulating
material shall extend a minimum of two feet beyond the outside diameter
of the sewer being crossed. Insulating material shall be placed and
tamped around the water service.
E.
Backfill. The excavation shall be backfilled to one
foot above the pipe with run-of-bank gravel, compacted in six-inch
lifts, no stones larger than three inches. In pavement areas, the
remainder of the excavation shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the excavation shall be backfilled
with suitable material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
F.
Protection of new work. The contractor shall comply
with Section 107-05E, Guarding and Protection, of the New York State
Department of Transportation Standard Specifications of latest issue,
when excavations are left open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete clearing, excavation
or filling, preparation of subgrade and backfilling for the installation
of PVC plastic drainpipe, as shown on the plans, in the proposal or
as ordered by the Engineer. This item includes materials of construction,
pipe jointing materials and fittings, the placing of the material,
embedding of the pipe, bracing of existing structures and all operations
which are necessary to complete the work.
B.
General requirements.
(1)
The PVC material from which the pipe and fittings
shall be extruded or molded shall not contain any reclaimed, reground
or reworked material whatsoever, but shall be compounded from virgin
PVC resins, plasticizers, stabilizers and such materials that, when
compounded, it shall meet the requirements contained in this specification.
(2)
The pipe and fittings shall be extruded or molded
in such a manner that all cross sections shall be dense, homogeneous
and free from porosity or other imperfections.
(3)
The solvent cement shall be a solution of unplasticized
PVC tetrahydrofuran and cyclohexanone.
(4)
Standard details. PVC plastic drainpipe shall be placed
in accordance with the requirements of the construction standards
of the Town of Union.
(5)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer.
(6)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(7)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(8)
Joints shall be as required for the various pipes
as called for on the plans, in the itemized proposal or as ordered
by the Engineer. All joints will be either bell and spigot type or
push-on type and shall be installed, made up and inspected in accordance
with approved printed instructions of the manufacturer.
C.
Material.
(1)
PVC material for pipe and fittings shall meet the
requirements of ASTM Designation D1784 for Rigid Polyvinyl Chloride
Compounds and Chlorinated Polyvinyl Chloride Compounds, Class 12444-B.
(2)
Molded or extruded pipe shall conform to ASTM Designation
D1785 for Polyvinyl Chloride (PVC) Plastic Pipe Fittings, Schedule
80, PVC 1120.
(3)
Molded or extruded fittings shall conform to ASTM
Designation D2467 for Socket-Type Polyvinyl Chloride (PVC) Plastic
Pipe Fittings, Schedule 80, PVC I.
(4)
Solvent cement shall meet the requirements of ASTM
Designation D2564 for Solvent Cements for Polyvinyl Chloride (PVC)
Plastic Pipe and Fittings.
(5)
Dimensions. The dimensions and tolerances of the pipe
and fittings shall conform to ASTM Designations D1785 and D2467, respectively.
|
Nominal Size
|
Outside Diameter
(inches)
|
Inside Diameter
(inches)
|
Wall Thickness Schedule 80
(inches)
| |
|---|---|---|---|---|
|
4
|
4.500
|
3.826
|
.337
| |
|
5
|
5.563
|
4.813
|
.375
| |
|
6
|
6.625
|
5.761
|
.432
| |
|
8
|
8.625
|
7.625
|
.500
| |
|
10
|
10.750
|
9.564
|
.593
|
(6)
All material furnished shall be plainly marked in
accordance with the ASTM Designations D1785, D2467 and D2564 for the
pipe, fittings and solvent cement, respectively.
(7)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(8)
Pipe bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Standard Specifications
of latest issue.
D.
Method.
(1)
All drainpipe shall be placed on a cushion of pipe
bedding which shall have a minimum depth of four inches extended the
full width of the trench. Where trench excavation is performed in
rock, the bedding cushion will be a minimum of six inches in depth.
(See trench excavation, pipe bedding and backfill detail shown on
the standards sheet of the plans.) The pipe will then be properly
jointed and laid to the correct line and grade. Porous fill material
shall then be placed adjacent to the sides of the pipe and to a height
of a minimum of 1 1/2 feet above the pipe center line or as shown
on the plans or as ordered by the Engineer and thoroughly compacted
to provide lateral support for the pipe. This protective cushion shall
be compacted using a vibratory-type compactor prior to backfilling
the remainder of the trench.
[Amended 12-2-2009 by L.L. No. 15-2009]
(2)
The contractor shall provide the necessary lines and
supports to ensure installation of the pipe to the line and grade
as indicated on the plans or as ordered by the Engineer. The contractor's
method for lowering the pipe into the trench shall be such that neither
the pipe nor the trench will be damaged or disturbed.
(3)
The Engineer shall inspect all pipe before it is laid
and reject any section that is damaged by handling or is found to
be defective in any way, at the expense of the contractor.
(4)
The pipe installation shall begin at the downgrade
end and progress in the upgrade direction with the bells of the pipe
upgrade.
(5)
The upgrade end of pipelines not terminating in a
structure shall be plugged with a cap or plug approved by the Engineer.
(6)
The pipe shall be accurately set to line and grade
so that the invert will be smooth and uniform and shall not be laid
on frozen ground.
(7)
Pipe which is not true in alignment or which shows
any settlement after laying shall be taken up and relaid without extra
compensation.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with run-of-bank gravel, compacted in six-inch
lifts, no stones larger than three inches. In pavement areas, the
remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
F.
Protection of new work.
(1)
Movement of construction equipment and all other vehicles
and loads over and adjacent to any pipe shall be done at the contractor's
risk. When determined by the Engineer, any pipe that is damaged or
disturbed through any cause shall be replaced, as ordered by the Engineer,
at the expense of the contractor and at no cost to the owner.
(2)
The contractor shall comply with Section 107-05E,
Guarding and Protection, of the New York State Department of Transportation
Standard Specifications of latest issue, when excavations are left
open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to furnish and place run-of-bank
gravel fill to complete embankments, shoulders, subgrade foundation
and backfill at structures, pipes and other such locations as shown
on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Run-of-bank gravel fill shall be
placed in accordance with the requirements of the construction standards
of the Town of Union and shall conform to Section 200, Earthwork,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. All existing lawns and
natural or filled embankments shall be cut back to form a 1:2 backslope.
Where necessary, additional material shall be brought to the site
to complete the backfilling. All disturbed areas shall be raked free
of large lumps of dirt, stones larger than three inches and other
objectionable material which shall be removed from the site. All excess
material produced from excavation shall be disposed of by the contractor
unless otherwise directed. Where the excavated material is natural
gravel, the excess shall be stockpiled, as directed, for use by the
Town.
C.
Material. Run-of-bank gravel shall conform to Item
203.7, Select Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
D.
Method.
(1)
The placing of this material shall be done by a method
approved by the Engineer. No segregation of large or fine particles
will be allowed, but the material, as placed, shall be well graded,
with no pockets of fine material. Water shall be added in such amounts
as the Engineer may deem necessary to obtain satisfactory compaction.
(2)
When the moisture content of the layer is within the
limits for proper compaction, the entire surface shall be compacted
with approved compaction equipment, the minimum number of passes required
on all portions of each layer shall be six unless otherwise determined
by the Engineer, after appropriate field density tests to evaluate
the compactive efficiency of the equipment.
(3)
The material shall be placed in horizontal layers
not to exceed six inches in thickness prior to compaction.
(4)
All materials used by the contractor, for his convenience,
to make up for losses in settlement or construction irregularities,
without written permission by the Engineer, will be done at the contractor's
expense.
E.
Protection of new work. The contractor shall assume
full responsibility for any contamination and/or degradation of any
part of this course during construction and shall, at his own expense,
remove any and all portions of this course which do not conform to
the requirements of these specifications and replace these portions
with specified material.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, material and equipment necessary to complete
clearing and excavation for the placement of reinforced concrete pipe
as shown on the plans, in the proposal, or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer. Where necessary, additional material shall be brought
to the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
directed. Where the excavated material is natural gravel, the excess
shall be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(5)
Joints shall be sealed with flexible watertight elastomeric
gasket or preformed plastic sealer or as ordered by the Engineer.
C.
Material.
(1)
Pipe. Round reinforced concrete pipe and reinforced
concrete low-pressure flatbed pipe, where specified, shall conform
to the New York State Department of Transportation Standard Specifications,
Section 706-02, Reinforced Concrete Pipe, and ASTM Designation C 76
and Materials Method Number 1, class as listed in the proposal. Reinforced
concrete low-pressure flatbed pipe shall also conform to AWWA Standard
C 302, Sections 2.7, 3.2 and 3.4; all the pipe and joints shall be
capable of withstanding an internal pressure of no less than 10 pounds
per square inch gauge without leakage; pipe shall be "Flat Bed Amseal"
pipe or approved equal. Reinforced concrete elliptical pipe shall
conform to the New York State Department of Transportation Standard
Specifications, Section 706-03, Reinforced Concrete Elliptical Pipe,
and ASTM Designation C 507 and Materials Method Number 1, class as
listed in the proposal. Pipe which is defective from any cause, including
damage during handling shall be unacceptable for installation and
shall be replaced by the contractor, at his expense, as ordered by
the Engineer. Reference is made to the New York State Department of
Transportation Standard Specifications of latest issue.
(2)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Pipe bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Standard Specifications
of latest issue.
(4)
Pipe joints shall conform to the requirements of Section
603 of the New York State Department of Transportation Standard Specifications
of latest issue.
D.
Method. All pipe shall be laid true to line and grade
and shall have a full, firm and even bearing. Bedding shall consist
of sand, or approved equal, placed to a depth of four inches in soil
and six inches in rock, unless otherwise directed by the Engineer.
Pipe laying shall begin at the downgrade end and progress in the upgrade
direction. Pipe with bell and spigot-type joints shall be laid with
the bells upgrade. When pipe is supplied with lifting holes, these
holes shall be plugged by the contractor with cement mortar prior
to backfilling. The mortar shall be composed of one part portland
cement and two parts mortar sand. Joints shall be sealed so as to
form a watertight seal. The backfill shall be thoroughly compacted
using vibratory compaction equipment.
[Amended 12-2-2009 by L.L. No. 15-2009]
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with bedding material. In pavement areas,
the remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
[Amended 12-2-2009 by L.L. No. 15-2009]
F.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any pipe shall
be done at the contractor's risk. When determined by the Engineer,
any pipe that is damaged or disturbed through any cause, shall be
replaced, as ordered by the Engineer, at the expense of the contractor
and at no cost to the owner.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to place riprap as shown on the plans
or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Riprap type, as specified in the
itemized proposal, shall be placed in accordance with the requirements
of the construction standards of the Town of Union and shall conform
to Section 620, Bank and Channel Protection, of the New York State
Department of Transportation Standard Specifications of latest issue.
(2)
Removal of existing trees and shrubs. Trees and shrubs
up to 12 inches in diameter which interfere with the new construction
shall be cut and stumps shall be removed. Trees or shrubs which are
marked for preservation shall be moved and replanted as ordered by
the Engineer.
(3)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. All existing lawns and
natural or filled embankments shall be cut back to form a 1:2 backslope.
Where necessary, additional material shall be brought to the site
to complete the backfilling. All disturbed areas shall be raked free
of large lumps of dirt, stones larger than three inches and other
objectionable material which shall be removed from the site. All excess
material produced from excavation shall be disposed of by the contractor
unless otherwise directed. Where the excavated material is natural
gravel, the excess shall be stockpiled as directed for use by the
Town.
(4)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
(5)
Bedding material shall be composed of crushed stone,
crushed air-cooled blast furnace slag or gravel, free of salt, nondurable
particles, organic material and thin or elongated particles in excess.
C.
Material.
(1)
Riprap shall conform to the requirements for Sections
620-2.01 and 620-2.03 of the New York State Department of Transportation
Standard Specifications of latest issue.
(2)
Cement shall conform to the requirements for Portland
Cement Type 2, Section 701-01 of the New York State Department of
Transportation Standard Specifications of latest issue.
(3)
Fine aggregate shall conform to the requirements for
Concrete Sand, Section 703-07 of the New York State Department of
Transportation Standard Specifications of latest issue.
(4)
Bedding shall conform to the requirements for Section
620-2.05 of the New York State Department of Transportation Standard
Specifications of latest issue.
(5)
Grout shall consist of one part cement and three parts
fine aggregates meeting the requirements as stated herein.
D.
Method.
(1)
Dry riprap shall be placed upon six inches of bedding
material, unless the material is the underlying natural slope or embankment
is suitable granular material as determined by the Engineer. The ground
surface on which the grouted riprap is to be placed shall be free
of bushes, trees, stumps and other objectionable material and shall
be dressed to a smooth surface. All soft or spongy material shall
be removed to the depth shown on the plans or as ordered by the Engineer
and replaced with approved material. Filled areas shall be compacted
in accordance with applicable provisions of Section 203-3.12, Compaction,
of the New York State Department of Transportation Standard Specifications
of latest issue. Protection for structure foundations shall be provided
as early as the foundation construction permits.
(2)
The riprap shall consist of stones shaped as nearly
as practicable in the form of right rectangular prisms. At least 50%
by weight, of the stones shall weigh in excess of 300 pounds each,
and the remainder of the stones shall weigh from 100 to 300 pounds
each. One dimension of each of the stones furnished shall at least
equal to the thickness of the riprap as shown on the plans.
(3)
The stones shall be placed so that the dimension approximately
equal to the layer thickness is perpendicular to the slope surface
and that the weight of the stone is carried by the underlying material
and not by the adjacent stones. On slopes, the largest stones shall
be placed at the bottom of the slope. The riprap shall be properly
aligned and placed so as to minimize void spaces between adjacent
stones.
(4)
For dry riprap, the spaces between the stones shall
be filled with spalls of suitable size.
(5)
For grouted riprap, the material upon which the riprap
is laid shall not be allowed to occupy the space between the stones.
When the stones are in place, the spaces between them shall be completely
filled with grout and the surface of the stones cleaned to remove
accumulations of grout. Riprap shall not be grouted in freezing weather.
The grouted riprap shall be kept moist for seven days after grouting.
A suitable curing compound may be employed, if approved by the Engineer.
(6)
The Engineer may order that occasional spaces be left
ungrouted for relief of hydrostatic pressure. The ungrouted spaces
shall be chinked with spalls of suitable size.
E.
Protection of new work. The protection of the new
work shall be the sole responsibility of the contractor. All work
which is damaged or deemed unsatisfactory by the Engineer shall be
removed and replaced at the expense of the contractor.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete rock excavation as shown
on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Rock excavation shall be performed
in accordance with the requirements of the construction standards
of the Town of Union and shall conform to the requirements of Section
200, Earthwork, of the New York State Department of Transportation
Standard Specifications of latest issue.
(2)
Rock excavation shall be comprised of boulders measuring
1/3 cubic yard or more in volume, rock material in ledges, bedded
deposits, unstratified masses and conglomerate deposits, so firmly
cemented that they possess the characteristics of solid rock, which
cannot be removed without systematic drilling and blasting, and concrete
or masonry structures. The removal of bituminous paving shall not
be considered as rock excavation.
C.
Material. Rock excavation shall conform to the requirements
of Section 203-3.05 of the New York State Department of Transportation
Standard Specifications of latest issue.
D.
Method.
(1)
Rock shall be excavated by a method as approved by
the Engineer and shall conform to the requirements of Section 107-05,
Safety and Health Requirements, of the New York State Department of
Transportation Standard Specifications of latest issue.
(2)
Where rock excavation, as defined herein, is required,
the rock shall be excavated to a minimum depth as indicated on the
plans or as ordered by the Engineer. Overdepths in the rock excavation
shall be backfilled with suitable material as determined by the Engineer.
E.
Protection of new work. The protection of the new
work shall be the sole responsibility of the contractor. All work
which is damaged shall be removed and replaced at the expense of the
contractor.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary for the construction of manholes
built of brick, concrete block, precast reinforced concrete or cast-in-place
concrete as shown on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Sanitary manholes shall be constructed
in accordance with the requirements of construction standards of the
Town of Union and shall conform to the requirements of Section 604
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. Where necessary, additional
material shall be brought to the site to complete backfilling. All
excess material produced from excavation shall be disposed of by the
contractor unless otherwise directed. Where the excavated material
is natural gravel, the excess shall be stockpiled as directed for
use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
C.
Material.
(1)
Excavation shall conform to the requirements for Section
203, Excavation and Embankment, of the New York State Department of
Transportation Standard Specifications of latest issue.
(2)
Sheeting shall conform to the requirements for Section
107-05, Safety and Health Requirements, of the New York State Department
of Transportation Standard Specifications of latest issue.
(3)
Common brick shall conform to the requirements of
Section 704-01 of the New York State Department of Transportation
Standard Specifications of latest issue.
(4)
Concrete brick shall conform to the requirements for
Section 704-02 of the New York State Department of Transportation
Standard Specifications of latest issue.
(5)
Concrete block shall conform to the requirements for
Section 704-03 of the New York State Department of Transportation
Standard Specifications of latest issue.
(6)
Precast reinforced concrete manholes shall conform
to the requirements for Section 706-04 of the New York State Department
of Transportation Standard Specifications of latest issue.
(7)
Joint material shall be placed between risers and
between riser and base and shall be precision joint (rubber gasket)
conforming to ASTM Specification C 443 of latest issue.
(8)
Concrete for cast-in-place manholes shall conform
to the requirements for Section 555 of the New York State Department
of Transportation Standard Specifications of latest issue.
(9)
Mortar shall consist of one part cement, conforming
to the requirements of Section 701-02 of the New York State Department
of Transportation Standard Specifications of latest issue, and two
parts sand, conforming to the requirements of Section 703-3 of the
New York State Department of Transportation Standard Specifications
of latest issue.
(10)
Steel reinforcing shall conform to the requirements
for Section 709-01 of the New York State Department of Transportation
Standard Specifications of latest issue.
(11)
Iron castings for frames and covers shall conform
to the Town of Union Standard Sheet or as specified in the proposal.
(12)
Piping and fittings for drops shall be of the
same material as the main sewer line or, at the contractor's option
and at no extra charge, the substitution of cast iron may be made.
(13)
Asphalt coating for manhole exteriors shall
be Inertol Standard.
(14)
Coal tar epoxy paint for frames and covers shall
be manufactured by the Inertol Company.
(15)
Run-of-bank gravel shall conform to the Item
203.07, Select Granular Fill, of the New York State Department of
Transportation Standard Specifications of latest issue.
(16)
Bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Specifications of
latest issue.
D.
Method.
(1)
Excavation for manholes will be made to as nearly
vertical surfaces as possible to a line one foot outside the footings.
Boulders, logs or any other objectionable material shall be removed.
Care shall be exercised to prevent overexcavation and to protect the
bottom to assure a firm foundation.
(2)
The contractor shall do all bracing, sheathing or
shoring necessary to perform and protect the excavation and the workman
as required for safety and to conform to governing laws. Unless otherwise
provided, bracing, sheathing and shoring involved in the construction
shall be removed prior to backfilling the manhole.
(3)
Manholes shall be installed so that tops finish at
grade as shown on the drawings or as ordered by the Engineer. Provision
shall be made to permit future downward adjustment of the frame and
grate by providing three courses of brick at the top section. Manholes,
in general, shall be circular in form and four feet in diameter inside
at the bottom, except as otherwise shown on the drawings. Special
shapes and materials may be required to meet local conditions. Footings
and bottoms shall be six inches thick for manholes up to 10 feet high
and eight inches thick for manholes in excess of 10 feet high. Manholes
constructed of brick, concrete block or cast-in-place concrete shall
be eight inches thick for depth up to 12 feet high and shall be increased
to 12 inches thick for depths in excess of 12 feet. Manholes constructed
of precast concrete shall be five inches thick.
(4)
Walls of brick or concrete block shall be plastered
smooth on both interior and exterior with a plaster parge coat consisting
of one part portland cement and two parts of clean sharp sand. Masonry
construction will not be permitted during freezing weather or when
masonry units contain frost unless the contractor provides heated
enclosures and obtains permission from the Engineer in writing. Exterior
surfaces of the manhole shall be coated with two separate coats of
Inertol Standard after the parge coat has been allowed to cure. Application
shall be by brush or spray in such a manner as to ensure complete
coverage.
(5)
Inverts in manholes on straight runs shall be formed
by the use of channel pipe or shaped concrete as detailed. Inverts
in manholes where changes in direction or grade are made shall be
formed by making curved channels of concrete or of sewer brick laid
on edge. The channels shall have a smooth surface free from irregularities.
(6)
Precast concrete manholes shall be handled in a manner
that will assure that they are not damaged. Assembly will be as shown
on the Town of Union Standard Sheet.
(7)
Castings, frames and covers shall be placed in the
position indicated on the plans or as ordered by the Engineer and
shall be set to the elevations as shown on the plans. Bearing surfaces
which are to receive the castings shall be flat. The casting shall
be set in a bed of mortar and anchored to the masonry as indicated
on the plans or as ordered by the Engineer. All units shall be firm
and secure. Manhole frames and covers shall be painted, after installation,
with two coats of coal tar epoxy paint. Surfaces to be painted shall
be dry and free of loose scale, rust or dirt.
(8)
Backfill shall he uniformly placed around all sides
of the manhole in layers not to exceed six inches in depth. Each layer
shall be thoroughly compacted using vibratory type compaction equipment.
Special precautions shall be used in backfilling the manhole at the
junction of the walls and the inlet and outlet sewer pipes. The backfill
under the pipe shall be thoroughly compacted to provide the necessary
support for the pipe to prevent shearing action where the pipe enters
the manhole structure. Special care shall be exercised to prevent
wedging action of the compacted soil against the completed structures.
E.
Backfill. The excavation shall be backfilled to one
foot above the pipe with bedding material. In pavement areas, the
remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
[Amended 12-2-2009 by L.L. No. 15-2009]
F.
Protection of new work. The contractor shall comply
with Section 107-05E, Guarding and Protection, of the New York State
Department of Transportation Standard Specifications of latest issue,
when excavations are left open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Cleaning and restoration of site.
(1)
After the backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by the
Engineer. The contractor shall restore all disturbed areas to the
original condition. After all work is completed, the contractor shall
remove all tools and other equipment used by him, leaving the entire
site free, clear and in good condition.
(2)
Cleaning and restoration of site is not payable directly,
but shall be considered as a subsidiary obligation of the contractor,
covered under the contract unit price bid for the pipe.
I.
Inspection. Prior to final approval of the sewage
system, the Engineer, accompanied by the contractor's representative,
shall make a thorough inspection, by an appropriate method, of the
entire installation. Any indication of defects in material or workmanship
or obstruction to flow in the manhole shall be further investigated
and corrected by the contractor without additional compensation, and
as ordered by the Engineer.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete clearing, excavation
or filling, preparation of subgrade and backfilling for the construction
of sanitary sewer as shown on the plans, in the proposal or as ordered
by the Engineer. This section includes the materials of construction,
pipe jointing materials and fittings, the placing of the material,
embedding of the pipe, bracing of existing structures and all operations
which are necessary to complete the work. Excavation, backfill and
restoration are covered under their respective sections.
B.
General requirements.
(1)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer. Where necessary, additional material shall be brought
to the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor unless otherwise
directed. Where the excavated material is natural gravel, the excess
shall be stockpiled as directed for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(5)
Joints shall be as required for the various pipes
as called for on the plans, in the itemized proposal or as ordered
by the Engineer. All joints will be either bell and spigot type or
push-on type and shall be installed, made up and inspected in accordance
with approved printed instructions of the manufacturer.
C.
Material.
(1)
Polyvinyl chloride (PVC) pipe and fittings shall be
made from PVC compounds as defined and described in ASTM Specifications
D1784, of latest issue, and shall conform to the requirements of ASTM
Specification D 3034 (SDR 35), of latest issue.
(2)
Ductile iron (DIP) pipe and fittings shall conform
to the requirements of ANSI Specifications A 21.51 for Class 4 pipe
and A 21.11 for push-on joints.
(3)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(4)
Pipe bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Standard Specifications
of latest issue.
D.
Method.
(1)
The contractor shall connect the new sewers to the
existing or proposed structures, as shown on the plans, in the proposal
or as ordered by the Engineer.
(2)
All sewer pipe shall be placed on a cushion of bedding
material which shall have a minimum depth of four inches extended
the full width of the trench. Where trench excavation is performed
in rock, the bedding will be a minimum of six inches in depth. (See
trench excavation, pipe bedding and backfill detail shown on the standards
sheet of the plans.) The pipe will then be properly jointed and laid
to the correct line and grade. Bedding material shall then be placed
adjacent to the sides of the pipe and to a height of a minimum of
1 1/2 feet above the pipe center line, or as shown on the plans or
as ordered by the Engineer, and thoroughly compacted to provide lateral
support for the pipe. This protective cushion shall be compacted using
a vibratory-type compactor prior to backfilling the remainder of the
trench.
[Amended 12-2-2009 by L.L. No. 15-2009]
(3)
The contractor shall provide the necessary lines and
supports to ensure installation of the pipe to the line and grade
as indicated on the plans or as ordered by the Engineer. The contractor's
method for lowering the pipe into the trench shall be such that neither
the pipe nor the trench will be damaged or disturbed.
(4)
The Engineer shall inspect all pipe before it is laid
and reject any section that is damaged by handling or is found to
be defective in any way, at the expense of the contractor.
(5)
The pipe installation shall begin at the downgrade
end and progress in the upgrade direction with the bells of the pipes
upgrade.
(6)
The upgrade end of pipelines not terminating in a
structure shall be plugged with a cap or plug approved by the Engineer
and capable of withstanding exfiltration testing as herein specified.
(7)
The pipe shall be accurately set to line and grade
so that the invert will be smooth and uniform and shall not be laid
on frozen ground.
(8)
Pipe which is not true in alignment or which shows
any settlement after laying shall be taken up and relaid without extra
compensation.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with bedding material. In pavement areas,
the remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
[Amended 12-2-2009 by L.L. No. 15-2009]
F.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any pipe shall
be done at the contractor's risk. When determined by the Engineer,
any pipe that is damaged or disturbed through any cause shall be replaced,
as ordered by the Engineer, at the expense of the contractor and at
no cost to the owner.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Tees and laterals.
(1)
The contractor shall, where ordered, place tees in
sewers for lateral connections. Tees shall be placed with the opening
upward at 45° to the vertical. Tee connections shall be of the
same material and strength as the sewer line and shall have the same
type joint. Tees provided for future use shall be fitted with factory
installed aluminum stoppers. Whenever the tee is located at a depth
in excess of 12 feet, the Engineer may order that a riser be extended
upward encased in concrete as shown on the plans.
(2)
The contractor shall place, where specified or ordered,
laterals from the tees extending to the street right-of-way or as
shown on the plans. All laterals shall be laid on a grade not less
than 1/4 inch per foot, unless otherwise ordered.
(3)
Laterals shall be of the same material and strength
and the same type of joint as the main line sewer. The laterals shall
be four inches diameter. Ends of laterals shall be plugged in the
same manner as specified for tees.
(4)
The ends of all laterals, where not connected for
service, shall be marked by a two-by-four-inch timber extending vertically
from the invert of the branch to ground surface.
(5)
Payment for encasing laterals in concrete will be
included in the unit price bid for drop laterals.
I.
Test for sanitary sewers. The initial section (M.H.
to M.H.) minimum 100 feet of sewer construction shall be tested for
leakage prior to backfilling before the contractor will be allowed
to continue laying additional sewer pipe. Other leakage tests shall
be conducted as the work progresses. The tests shall be performed
in a manner and at intervals acceptable to the Engineer. All sewers
shall be tested for watertightness and shall meet the requirements
set forth below before final acceptance of the work of the contract.
The contractor shall furnish all necessary appliances and make the
tests at his own expense.
(1)
Exfiltration test.
(a)
Tests shall be made by filling the sewer with
water and measuring the quantity of leakage from the sewer. The head
of water during the tests shall be maintained at least two feet above
the highest section of the work being tested. Where work being tested
has been constructed in water bearing soils, leakage tests may, at
the discretion of the Engineer, be made by measuring the quantity
of infiltration into the sewer or structure.
(b)
The allowable leakage or infiltration per 24
hours per inch of diameter per 1,000 feet of sewer tested shall not
exceed 37 gallons. Localized or spurting leaks of any volume detected
in sewers shall be permanently stopped.
(c)
Where the plans and specifications indicate
vitrified clay pipe and the section to be tested would establish a
hydraulic head on the downstream plug in excess of 15 feet, the sewer
line shall be flushed and candled and the test shall be made by low-pressure
air. Where the plans and specifications indicate asbestos-cement sewer
pipe and the section to be tested would establish a maximum hydraulic
head on the downstream plug in excess of 25 feet, the sewer line shall
be flushed and candled and the test made by the low-pressure air.
Manholes shall be tested individually by filling with water. The allowable
drop in the water surface of the manhole shall not exceed 0.01 feet
per foot of diameter per foot of vertical depth of manhole per hour.
(d)
The contractor, at his option, may test the
entire sewer line by the low-pressure air method in lieu of the hydrostatic
testing. The recommended procedure for air testing of sanitary sewers
is described in ASTM C 828-78T. The parameter to be measured is the
rate of air loss based on an average test pressure of 3.0 pounds per
square inch gauge above any back pressure due to any groundwater that
may be over the pipe.
(e)
Since there is no accurate correlation available
for comparing water leakage rates to air leakage rates, the reliance
on measured water leakage cannot be totally discarded. Accordingly,
where air testing is to be used for line acceptance, corroborative
hydrostatic testing shall be performed on sewer installations of the
same pipe size, material and conditions of installation. Sewer sections
which indicate the rates of air loss per unit of surface area which
most nearly approximate the rate for pipeline acceptance should be
selected for the corroborative tests. At least three sections are
to be so tested. The purpose of these corroborative tests is to permit
a reasonable assumption that, if these three test sections meet the
hydrostatic tests, the balance of the project also meets or exceeds
these requirements. If the air test is not supported by acceptable
corroborative hydrostatic tests, complete hydrostatic testing of the
sewer lines shall be required as the basis for final pipeline acceptance.
(2)
Low-pressure air acceptance test.
(a)
All branch fittings shall be securely plugged
to withstand the internal test pressures. The section of line being
tested shall also be securely plugged at each manhole. All stoppers
shall be adequately braced when required.
(b)
Air shall be slowly supplied to the plugged
pipeline until the internal air pressure reaches four pounds per square
inch greater than the average back pressure of any groundwater that
may submerge the pipe. At least two minutes shall be allowed for temperature
stabilization before proceeding further.
(c)
The pressure shall then be allowed to decrease
to 31/2 pounds per square inch at which time a stop watch shall be
started. At the end of the holding time shown in the following air
test table[1] the pressure drop shall be recorded. The pipeline shall
be considered acceptable if the pressure has not dropped below 21/2
pounds per square inch.
[1]
Editor's Note: The air test table is included
at the end of this chapter.
(d)
Manholes shall be tested individually by filling
with water. The allowable drop in the water surface of the manhole
shall not exceed 0.01 feet per foot of diameter per foot of vertical
depth of manhole per hour.
(e)
Should any leaks, defective joints or defective
construction be found, they shall be promptly made good, and should
any defective pipes or fittings be discovered, they shall be removed
and replaced with sound pipes or fittings in a satisfactory manner
and without additional compensation.
J.
Cleaning and restoration of site.
(1)
After the backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by the
Engineer. The contractor shall restore all disturbed areas to the
original condition. After all work is completed, the contractor shall
remove all tools and other equipment used by him, leaving the entire
site free, clear and in good condition.
(2)
Cleaning and restoration of the site is not payable
directly, but shall be considered as a subsidiary obligation of the
contractor, covered under the contract unit price bid for the pipe.
K.
Inspection. Prior to final approval of the sewage
system, the Engineer, accompanied by the contractor's representative,
shall make a thorough inspection, by an appropriate method, of the
entire installation. Any indication of defects in material or workmanship
or obstruction to flow in the pipe system shall be further investigated
and corrected by the contractor without additional compensation, and
as ordered by the Engineer.
L.
Concrete cradle; concrete encasement.
(1)
Where shown on the drawings or as required to complete
the construction to the satisfaction of the Engineer, the sewer pipe
shall be supported on a concrete cradle or encased in concrete.
(2)
Where a concrete cradle is called for, the concrete
shall be placed for the full width of the cradle up to the level of
the bottom of the pipe. Before the concrete has set, the joints shall
be made and the pipe set to line and grade and the concrete placed
and tamped under the haunches of and around the pipe to the level
shown on the plans.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete clearing, excavation
or filling, preparation of subgrade and backfilling for the construction
of sanitary sewer laterals as shown on the plans, in the proposal
or as ordered by the Engineer. This section includes the materials
of construction, pipe jointing materials and fittings, excavation,
backfill, restoration, the placing of the materials, embedding of
the pipe, bracing of existing structures and all operations which
are necessary to complete the work.
B.
General requirements.
(1)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer. Where necessary, additional material shall be brought
to the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor unless otherwise
directed. Where the excavated material is natural gravel, the excess
shall be stockpiled as directed for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(5)
Joints shall be as required for the various pipes
as called for on the plans, in the itemized proposal or as ordered
by the Engineer. All joints will be either bell and spigot type or
push-on type and shall be installed, made up and inspected in accordance
with approved printed instructions of the manufacturer.
C.
Material.
(1)
Polyvinyl chloride (PVC) pipe and fittings shall be
made from PVC compounds as defined and described in ASTM Specification
D1784, of latest issue, and shall conform to the requirements of ASTM
Specification D 3034 (SDR 35), of latest issue.
(2)
Ductile iron (DIP) pipe and fittings shall conform
to the requirements of ANSI Specifications A 21.51 for Class 4 pipe
and A 21.11 for push-on joints.
(3)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(4)
Pipe bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Standard Specifications
of latest issue.
D.
Method.
(1)
Whenever the tee is located at a depth in excess of
12 feet, the Engineer may order that a riser be extended upward encased
in concrete as shown on the plans.
(2)
The contractor shall place, where specified or ordered,
laterals from the tees extending to the street right-of-way or as
shown on the plans. All laterals shall be laid on a grade not less
than 1/4 inch per foot, unless otherwise ordered.
(3)
Laterals shall be of the same material and strength
and the same type of joint as the main line sewer. The laterals shall
be four inches in diameter. End of the laterals shall be plugged with
factory installed aluminum stoppers. Cleanouts shall be added to the
end of each sanitary sewer lateral per Figure 16, Lateral Connection.[1]
[Amended 3-2-2005 by L.L. No. 3-2005]
[1]
Editor's Note: Figure 16 is included at the
end of this chapter.
(4)
The ends of all laterals, where not connected for
service, shall be marked by a two-by-four-inch timber extending vertically
from the invert of the branch to the ground surface.
(5)
Drop laterals shall be constructed at locations as
shown on the plans or as ordered by the Engineer. Concrete encasement
for drop laterals shall be as shown on the Standard Detail Sheet.
(6)
All sewer pipe shall be placed on a cushion of bedding
which shall have a minimum depth of four inches extended the full
width of the trench. Where trench excavation is performed in rock,
the bedding will be a minimum of six inches in depth. (See trench
excavation, pipe bedding and backfill detail shown on the standards
sheet of the plans.) The pipe will then be properly jointed and laid
to the correct line and grade. Bedding material shall then be placed
adjacent to the sides of the pipe and to a height of a minimum of
1 1/2 feet above the center line or as shown on the plans or as ordered
by the Engineer, and thoroughly compacted to provide lateral support
for the pipe. This protective cushion shall be compacted using a vibratory-type
compactor prior to backfilling the remainder of the trench.
[Amended 12-2-2009 by L.L. No. 15-2009]
(7)
The contractor shall provide the necessary lines and
supports to ensure installation of the pipe to the line and grade
as indicated on the plans or as ordered by the Engineer. The contractor's
method for lowering the pipe in the trench shall be such that neither
the pipe nor the trench will be damaged or disturbed.
(8)
The Engineer shall inspect all pipe before it is laid
and reject any section that is damaged by handling or is found to
be defective in any way, at the expense of the contractor.
(9)
The pipe installation shall begin at the downgrade
end and progress in the upgrade direction with the bells of the pipes
upgrade.
(10)
The upgrade end of pipelines not terminating
in a structure shall be plugged with a cap or plug approved by the
Engineer and capable of withstanding exfiltration testing.
(11)
The pipe shall be accurately set to line and
grade so that the invert will be smooth and uniform and shall not
be laid on frozen ground.
(12)
Pipe which is not true in alignment or which
shows any settlement after laying shall be taken up and re-laid without
extra compensation.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with bedding material. In pavement areas,
the remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
[Amended 12-2-2009 by L.L. No. 15-2009]
F.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any pipe shall
be done at the contractor's risk. When determined by the Engineer,
any pipe that is damaged or disturbed through any cause shall be replaced,
as ordered by the Engineer, at the expense of the contractor and at
no cost to the owner.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Cleaning and restoration of site.
(1)
After the backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by the
Engineer. The contractor shall restore all disturbed areas to the
original condition. After all work is completed, the contractor shall
remove all tools and other equipment used by him, leaving the entire
site free, clear and in good condition.
(2)
Cleaning and restoration of site is not payable directly,
but shall be considered as a subsidiary obligation of the contractor,
covered under the contract unit price bid for the sewer lateral.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to furnish, place, maintain and remove
(unless ordered left in place) sheeting and bracing to protect workmen
in excavations as required under Title 29 Code of Federal Regulations,
Part 1926, Safety and Health Regulations for Construction (OSHA).
B.
General requirements.
(1)
Standard details. Sheeting and bracing shall be placed
in accordance with the requirements of the construction standards
of the Town of Union.
(2)
Sheet piling shall be of adequate cross section and
shall be adequately braced to protect workers against the hazard of
falling or sliding materials.
C.
Material. The selection of materials, their arrangement
and details shall be at the contractor's option and responsibility,
but subject to the approval of the Engineer.
D.
Method.
(1)
Sheeting shall be used as such locations as required
under Title 29, Part 1926 of the Occupational Safety and Health Act
(OSHA) standards and shall be installed as a sole responsibility of
the contractor under his orders and directions.
(2)
All sheeting is to be removed prior to backfilling
the excavations unless such removal, in the opinion of the Engineer,
would endanger the workmen or the completed portions of the work or
surroundings. In such an event, the Engineer will issue an order to
the contractor permitting the sheeting and bracing to be left in place.
E.
Protection of new work. The contractor shall comply
with Section 107-05E, Guarding and Protection of the New York State
Department of Transportation Standard Specifications of latest issue,
when excavations are left open overnight and on nonworking days.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section, the contractor shall
make the stakeout survey for construction purposes either by a professional
engineer or land surveyor licensed by the State of New York, consistent
with good survey practice. The work shall proceed immediately upon
the award of the contract and shall be expeditiously progressed to
completion in a manner and at a rate satisfactory to the Engineer.
The contractor shall keep the Engineer fully informed as to the progress
of the stakeout survey.
[Amended 12-2-2009 by L.L. No. 15-2009]
B.
General requirements.
(1)
All instruments, equipment, stakes and other material
necessary to perform the work shall be provided by the contractor.
(2)
All stakes used shall be of the type approved by the
Engineer, clearly and permanently marked so as to be legible at all
times. It shall be the contractor's responsibility to maintain these
stakes in their proper position and location at all times. Any existing
stakes or markers defining property lines and survey monuments which
may be disturbed during construction shall be properly tied in to
fixed reference points before being disturbed and accurately reset
in their proper position upon completion of the work.
C.
Material. The survey and stakeout shall conform to
the requirements for Section 634, Miscellaneous, of the New York State
Department of Transportation Standard Specifications of latest issue.
D.
Method.
(1)
The contractor shall trim trees, brush and other interfering
objects, not inconsistent with the plans, from survey lines in advance
of all survey work to permit accurate and unimpeded work by his stakeout
survey crews and the Engineer's cross section survey crews. The exact
position of all work shall be established from control points which
are shown on the plans or supplied by the Engineer. Any error, apparent
discrepancy or absence in or of data shown or required for accurately
accomplishing the stakeout survey shall be referred to the Engineer
for interpretation or furnishing when such is observed or required.
(2)
The contractor shall be responsible for the accuracy
of his work and shall maintain all reference point stakes, etc., throughout
the life of the contract. Damaged, destroyed or inaccessible reference
points, bench marks or stakes shall be replaced by the contractor.
Existing or new control points that will be or are destroyed during
construction shall be reestablished and all reference ties recorded
therefor shall be furnished to the Engineer. All stakeout survey work
shall be referenced to the center line shown on the plans. All computations
necessary to establish the exact position of work from control points
shall be made and preserved by the contractor. All computations, survey
notes and other records necessary to accomplish the work shall be
neatly made available to the Engineer upon request and furnished to
the Town upon contract completion.
(3)
The Engineer may check all or any portion of the stakeout
survey work or notes made by the contractor and any necessary correction
to the work shall be immediately made. Such checking by the Engineer
shall not relieve the contractor of any responsibilities for the accuracy
or completeness of his work.
(4)
The contractor will not be required or permitted to
take the preconstruction or final cross sections that are used for
payment purposes.
(5)
Reference points, base lines, stakes and bench marks
for borrow pits shall be established by the contractor.
(6)
All required right-of-way and easement limits shall
be reestablished, staked and referenced by the contractor concurrent
with the construction stakeout survey.
(7)
The contractor shall place two offset stakes or references
at each center-line station and at such immediate stations as the
Engineer may direct. From computations and measurements made by the
contractor, these stakes shall be clearly marked with the correct
center-line station number, offset and cut or filled so as to permit
the establishment of the true center-line location during construction.
He shall locate and place all cut, fill, slope, fine grade or other
stakes and points as the Engineer may direct, to be necessary for
the proper progress of the work.
(8)
Drainage structures shall be staked out by the contractor
at the locations and elevations shown on the plans or ordered by the
Engineer. The contractor shall also accurately establish the center
line of bearings on bridge abutments and piers, mark accurately the
location of anchor bolts to be installed and check the elevations
of bearing surfaces and set bearing plates at their exact elevation.
Before completion of the fabrication of steel for superstructures,
the contractor shall verify by accurate field measurements the location,
both vertically and horizontally, of all bearings and shall assume
full responsibility for the fabricated steel fitting the bearings
as constructed.
(9)
Prior to the final cross section survey by the Engineer
the contractor shall reestablish center-line points and stationing
as required by the Engineer.
[Amended 8-1-1990 by L.L. No. 12-1990]
[Amended 12-2-2009 by L.L. No. 15-2009]
A.
Description. Under this section, the contractor shall
furnish all plant, labor, materials, equipment and appliances and
perform all operations necessary to complete clearing and excavation
for the placement of perforated galvanized corrugated steel pipe underdrain
of the size, gauge and corrugation as shown on the plans, in the itemized
proposal or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Underdrain shall be placed in accordance
with the requirements of the construction standards of the Town of
Union and shall conform to the requirements of Section 605, Underdrains,
of the New York State Department of Transportation Standard Specification
of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated to the depth as shown on the plans or as ordered by the
Engineer. Where necessary, additional material shall be brought to
the site to complete the backfilling. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
directed. Where the excavated material is natural gravel, the excess
shall be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
material as ordered by the Engineer.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
(5)
Joints shall be connected by use of coupling bands
as required for the various pipes as called for on the plans, in the
proposal, or as ordered by the Engineer.
C.
Material.
(1)
PVC underdrain and fittings shall conform to the requirements
of Section 706-18, Perforated Polyvinyl Chloride Underdrain, of the
New York State Department of Transportation Standard Specifications
of latest issue.
[Amended 12-2-2009 by L.L. No. 15-2009]
(2)
Run-of-bank gravel shall conform to Item 203-07, Select
Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Gravel filter material shall conform to Item 605.0901,
Underdrain Filter, Type I, of the New York State Department of Transportation
Standard Specifications of latest issue.
D.
Method.
(1)
The pipe shall be installed true to line and grade
in accordance with the method specified on either the plans or the
Standard Detail Sheet and shall be in conformance with one of the
following criteria:
(a)
Pipe installed in a subgrade section shall be
bedded on not less than four inches of compacted filter material and
shall have not less than six inches of filter material each side and
above the pipe. The remainder of the underdrain installation section
shall be completed using materials in accordance with the Standard
Detail Sheet or as indicated on the plans.
(b)
Pipe installed in a trench section shall be
bedded on filter material in accordance with the requirements for
underdrain as shown on the Standard Detail Sheet. The filter material
shall be carefully placed by hand shoveling on each side and to a
depth of at least six inches over the top of the pipe. The pipe trench
shall then be filled with materials in accordance with the Standard
Detail Sheet. Special care shall be taken to ensure that neither the
alignment nor grade of the pipe is disturbed.
(2)
Perforations shall be placed down unless the plans
or special provisions indicate otherwise.
E.
Protection of new work. Movement of construction equipment
and all other vehicles and loads over and adjacent to any pipe shall
be done at the contractor's risk. When determined by the Engineer,
any pipe that is damaged or disturbed through any cause, shall be
replaced, as ordered by the Engineer, at the expense of the contractor
and at no cost to the owner.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary for the construction of storm manholes,
catch basins and/or field inlets built of brick, concrete block, precast
reinforced concrete or cast-in-place concrete as shown on the plans
or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Storm manholes, catch basins and/or
field inlets shall be constructed in accordance with the requirements
of the construction standards of the Town of Union and shall conform
to the requirements of Section 604 of the New York State Department
of Transportation Standard Specifications of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. Where necessary, additional
material shall be brought to the site to complete backfilling. All
excess material produced from excavation shall be disposed of by the
contractor unless otherwise directed. Where the excavated material
is natural gravel, the excess shall be stockpiled as directed for
use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material, as ordered by the Engineer, where necessary to
raise the level of the subgrade.
(4)
Bedding shall be placed to the depth as shown on the
plans or as ordered by the Engineer.
C.
Material.
(1)
Excavation shall conform to the requirements for Section
203, Excavation and Embankment, of the New York State Department of
Transportation Standard Specifications of latest issue.
(2)
Sheeting shall conform to the requirements for Section
107-05, Safety and Health Requirements, of the New York State Department
of Standard Specifications of latest issue.
(3)
Common brick shall conform to the requirements of
Section 704-01 of the New York State Department of Transportation
Standard Specifications of latest issue.
(4)
Concrete brick shall conform to the requirements for
Section 704-02 of the New York State Department of Transportation
Standard Specifications of latest issue.
(5)
Concrete block shall conform to the requirements for
Section 704-03 of the New York State Department of Transportation
Standard Specifications of latest issue.
(6)
Precast reinforced concrete shall conform to the requirements
for Section 706-04 of the New York State Department of Transportation
Standard Specifications of latest issue.
(7)
Joint material shall be placed between risers and
between riser and base and shall be precision joint (rubber gasket)
conforming to ASTM Specification C 443 of latest issue.
(8)
Concrete for cast-in-place shall conform to the requirements
for Section 555 of the New York State Department of Transportation
Standard Specifications of latest issue.
(9)
Mortar shall consist of one part cement, conforming
to the requirements of Section 701-02 of the New York State Department
of Transportation Standard Specifications of latest issue, and two
parts sand, conforming to the requirements of Section 703-03 of the
New York State Department of Transportation Standard Specifications
of latest issue.
(10)
Steel reinforcing shall conform to the requirements
for Section 709-01 of the New York State Department of Transportation
Standard Specifications of latest issue.
(11)
Iron castings for frames and covers shall conform
to the Town of Union Standard Sheet or as specified in the proposal.
(12)
Coal tar epoxy paint for frames and covers shall
be manufactured by the Inertol Company.
(13)
Run-of-back gravel shall conform to the Item
203.07, Select Granular Fill, of the New York State Department of
Transportation Standard Specifications of latest issue.
(14)
Bedding shall be sand or an approved equal which
meets the requirements for bedding as set forth in Section 620 of
the New York State Department of Transportation Specifications of
latest issue.
D.
Method.
(1)
Excavation for storm manholes, catch basins and/or
field inlets will be made to as nearly vertical surfaces as possible
to a line one foot outside the footings. Boulders, logs or any other
objectionable material shall be removed. Care shall be exercised to
prevent overexcavation and to protect the bottom to assure a firm
foundation.
(2)
The contractor shall do all bracing, sheathing or
shoring necessary to perform and protect the excavation and the workman
as required for safety and to conform to governing laws. Unless otherwise
provided, bracing, sheathing and shoring involved in the construction
shall be removed prior to backfilling the manhole, catch basin and/or
field inlet.
(3)
Manholes, catch basins and/or field inlets shall be
installed so that tops finish at grade as shown on the drawings or
as ordered by the Engineer. Provision shall be made to permit future
downward adjustment of the frame and grate by providing three courses
of brick at the top section. Manholes, in general, shall be circular
in form and four feet in diameter inside at the bottom, except as
otherwise shown on the drawings. Catch basins and field inlets shall
be constructed of concrete block or precast concrete units with an
inside dimension of two feet by three feet with a two-foot sump. Special
shapes and materials may be required to meet local conditions. Footings
and bottoms shall be six inches thick for manholes, catch basins and/or
field inlets up to 10 feet high and eight inches thick for manholes,
catch basins and/or field inlets in excess of 10 feet high. Manholes,
catch basins and/or field inlets constructed of brick, concrete block
or cast-in-place concrete shall be eight inches thick for depth up
to 12 feet high and shall be increased to 12 inches thick for depths
in excess of 12 feet. Manholes, catch basins and/or field inlets constructed
of precast concrete shall be five inches thick.
(4)
Walls of brick or concrete block shall be plastered
smooth on both interior and exterior with a plaster parge coat consisting
of one part portland cement and two parts of clean sharp sand. Masonry
construction will not be permitted during freezing weather or when
masonry units contain frost unless the contractor provides heated
enclosures and obtains permission from the Engineer in writing.
(5)
Inverts in manholes on straight runs shall be formed
by the use of channel pipe or shaped concrete as detailed. Inverts
in manholes where changes in direction or grade are made shall be
formed by making curved channels of concrete or of sewer brick laid
on edge. The channels shall have a smooth surface free from irregularities.
(6)
Precast concrete manholes, catch basins and/or field
inlets shall be handled in a manner that will assure that they are
not damaged. Assembly will be as shown on the Town of Union Standard
Sheet.
(7)
Castings, frames and covers shall be placed in the
position indicated on the plans or as ordered by the Engineer and
shall be set to the elevations as shown on the plans. Bearing surfaces
which are to receive the castings shall be flat. The casting shall
be set in a bed of mortar and anchored to the masonry as indicated
on the plans or as ordered by the Engineer. All units shall be firm
and secure. Manhole, catch basin and/or field inlet frames and covers
shall be painted (after installation) with two coats of coal tar epoxy
paint. Surfaces to be painted shall be dry and free of loose scale,
rust or dirt.
(8)
Backfill shall be uniformly placed around all sides
of the manhole, catch basin and/or field inlet in layers not to exceed
six inches in depth. Each layer shall be thoroughly compacted using
vibratory type compaction equipment. Special precautions shall be
used in backfilling the manhole, catch basin and/or field inlet at
the junction of the walls and the inlet and outlet storm sewer pipes.
The backfill under the pipe shall be thoroughly compacted to provide
the necessary support for the pipe to prevent shearing action where
the pipe enters the manhole, catch basin and/or field inlet. Special
care shall be exercised to prevent wedging action of the compacted
soil against the completed structure.
E.
Backfill. The excavation shall be backfilled to one
foot above the pipe with bedding material. In pavement areas, the
remainder of the excavation shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the excavation shall be backfilled
with suitable excavated material, compacted twelve-inch lifts, no
stones larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
[Amended 12-2-2009 by L.L. No. 15-2009]
F.
Protection of new work. The contractor shall comply
with Section 107-05E, Guarding and Protection, of the New York State
Department of Transportation Standard Specifications of latest issue,
when excavations are left open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Cleaning and restoration of site.
(1)
After the backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by the
Engineer. The contractor shall restore all disturbed areas to the
original condition, After all work is completed, the contractor shall
remove all tools and other equipment used by him, leaving the entire
site free, clear and in good condition.
(2)
Cleaning and restoration of site is not payable directly,
but shall be considered as a subsidiary obligation of the contractor,
covered under the contract unit price bid for this item.
I.
Inspection. Prior to final approval of the storm system,
the Engineer, accompanied by the contractor's representative, shall
make a thorough inspection, by an appropriate method, of the entire
installation. Any indication of defects in material or workmanship
or obstruction to flow in the manhole, catch basin and/or field inlet
shall be further investigated and corrected by the contractor without
additional compensation and as ordered by the Engineer.
A.
Description. Under this section the contractor shall
furnish all plant, labor, material and equipment necessary to complete
excavation, filling and preparation of subgrade for the placement
of a subbase course as shown on the plans, in the proposal or as ordered
by the Engineer.
B.
General requirements.
(1)
Standard details. The subbase course shall be placed
in accordance with the construction standards of the Town of Union
or Broome County, within their respective rights-of-way.
(2)
Excavation. All material of every description and
nature, necessary for the proper installation of the work, shall be
excavated down to the subgrade elevation. All excess material produced
from excavation shall be disposed of by the contractor, unless otherwise
directed. Where excavated material is natural gravel, the excess shall
be stockpiled, as directed, for use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
C.
Material.
(1)
The subbase course shall conform to the requirements
of Section 304, Subbase Course, as stated in the itemized proposal,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Granular material shall conform to Item 304.04, Subbase
Course, Type 3, of the New York State Department of Transportation
Standard Specifications of latest issue.
(3)
Select granular material shall conform to Item 304.05,
Subbase Course, Type 4, of the New York State Department of Transportation
Standard Specifications of latest issue.
(4)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department Standard Specification
of latest issue.
D.
Method.
(1)
The existing surface shall be removed to a depth as
shown on the plans or as ordered by the Engineer. The exposed gravel
subgrade shall be proofed rolled to grade, to the satisfaction of
the Engineer.
(2)
A subbase course shall be constructed upon the previously
prepared subgrade. The subbase, in the Town rights-of-way, shall consist
of 16 inches, compacted thickness, of acceptable material.
[Amended 3-2-2005 by L.L. No. 3-2005]
(3)
The spreading of any layer of this material shall
be done by a method approved by the Engineer. Spreading from piles
dumped on the roadway will not be permitted. No segregation of large
or fine particles will be allowed, but the material, as spread, shall
be well graded, with no pockets of fine material. Water shall be added
in such amounts as the Engineer may deem necessary to obtain satisfactory
compaction.
(4)
When the moisture content of the layer is within the
limits for proper compaction, the entire surface shall be rolled with
a pneumatic-tired roller having an operating weight of between 1,000
and 2,500 pounds per tire or a smooth steel wheel roller having a
minimum weight of 10 tons. All portions of each layer shall be covered
by a minimum of eight passes of the roller.
(5)
For heavier, vibratory or more efficient types of
approved compaction equipment, the minimum number of passes required
on all portions of each layer shall be determined by the Engineer,
after appropriate field density tests to evaluate the compactive efficiency
of the equipment. Compaction shall be continued until the course has
been thoroughly compacted and shows no signs of weaving.
(6)
In limited areas, where the use of a roller is impractical,
approved vibrating plate compactors or impact runners shall be used
to compact the material.
(7)
After compaction, the top surface of this course shall
not extend more than 1/2 inch above or below the true grade and surface
at any location.
(8)
The subbase course, at any location, shall be compacted,
finished and completed to the above tolerance and approved by the
Engineer before any pavement or succeeding course is placed at that
location. Any and all holes, humps or irregularities in the subbase
shall be removed by suitable means and then recompacted with an acceptable
power roller.
(9)
The width of the layer of the subbase course shall
be restricted to that required for placement of the lane being paved
and shall not be laid in excess of 500 linear feet without being compacted.
No traffic or hauling, other than that necessary for bringing material
for the next course, shall be permitted over this course. Should the
subgrade, subbase or any other material become churned up into or
mixed with this course through any reason whatsoever, the contractor
shall, at his own expense, remove such mixtures and replace them with
materials acceptable for this item.
(10)
All materials used by the contractor, for his
convenience, to make up for losses in settlement or construction irregularities,
without written permission by the Engineer, will be done at the contractor's
expense.
E.
Protection of new work. The contractor shall assume
full responsibility for any contamination and/or degradation of any
part of this course during construction and shall, at his own expense,
remove any and all portions of this course which do not conform to
the requirements of these specifications and replace these portions
with specified material.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to excavate for all culverts, pipelines
and other minor structures, including but not limited to leaching
basins, catch basins, field inlets, manholes and drop inlets as shown
on the plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. Trench and culvert excavation shall
be performed in accordance with the requirements of the construction
standards of the Town of Union and shall conform to Section 206, Trench,
Culvert and Structure Excavation, of the New York State Department
of Transportation Standard Specifications of latest issue.
(2)
Excavation and backfill. All material of every description
and nature, necessary for the proper installation of the work, shall
be excavated down to the subgrade elevation. Where necessary, additional
material shall be brought to the site to complete the backfilling.
All excess material produced from excavation shall be disposed of
by the contractor unless otherwise directed. Where the excavated material
is natural gravel, the excess shall be stockpiled as directed for
use by the Town.
(3)
Porous fill material shall be used to replace unsuitable
subgrade material where ordered by the Engineer or where necessary
to raise the level of the subgrade.
C.
Material.
(1)
Excavation shall conform to the requirements for Section
203, Excavation and Embankment, of the New York State Department of
Transportation Standard Specifications of latest issue.
(2)
Sheeting shall conform to the requirements for Section
107-05, Safety and Health Requirements of the New York State Department
of Transportation Standard Specifications of latest issue.
D.
Method.
(1)
The excavation shall be dewatered when necessary and
kept free from water, snow and ice during construction.
(2)
Special care shall be taken not to disturb the bottom
of the excavation and not to remove the material at final grade until
just before the structure or bedding is placed.
(3)
The contractor shall be responsible at all times for
the carrying out of all excavation operations in a safe and prudent
manner, so that the area of the construction is free from unreasonable
hazard.
E.
Protection of new work. The contractor shall comply
with Section 107-05E, Guarding and Protection, of the New York State
Department of Transportation Standard Specifications of latest issue,
when excavations are left open overnight and on nonworking days.
A.
General requirements.
(1)
These requirements apply to all new subdivisions in
the Town of Union which are protected by a call box alarm system.
(2)
In addition to these requirements, all underground
installations of fire alarm ducts and circuits shall comply with applicable
sections of the latest revisions of the Nation Electrical Safety Code
and Pamphlet No. 73 of the National Fire Protection Association and
shall be subject to field inspection and final approval by the alarm
technician, approved by the appropriate Fire Commissioners or the
Chief of the Fire Department.
B.
Ducts.
(1)
All fire alarm circuits which are to be placed underground
shall be installed in fiber galvanized steel duct lines and/or pipe.
(2)
Fire conduit shall be of the so-called Bell System
C (thick wall) Type No. 40 fiber conduit. This normally comes in eight-foot
lengths and minimum inside diameter shall not be less than two inches.
(3)
Galvanized steel conduit, if used, shall have a minimum
inside diameter of two inches, and all joints shall be properly waterproofed.
(4)
When any part of the duct lines shall cross a traveled
way (single residence driveways excepted), galvanized steel conduit
shall be used.
(5)
The fire alarm duct line may occupy the same trench
with NYSEG and Telephone Company cables but a minimum of twelve-inch
clearance must at all times be maintained between the fire alarm duct
and any of the above cables or ducts. Where it is not possible to
maintain this clearance (which shall be measured either vertically
or horizontally) such as crossing over the above cables, six inches
of sand or dirt plus a minimum of three inches of concrete will be
acceptable.
(6)
The duct line shall be so installed that they shall
pitch towards the handholes and under no circumstances shall low points
be permitted in duct lines except at handholes.
(7)
The duct line shall be installed a minimum of 18 inches
below the final grade of the street or sidewalk plot.
(8)
The underground handholes shall be spaced at a distance
not to exceed 300 feet from the point of origin.
(9)
Connection to the underground municipal circuit. The
owner of the property shall install an approved IMSA Fire Alarm Signal
Cable containing four No. 12 (solid conductors) enclosed in an approved
underground duct not less than two inches in diameter from the building
to the nearest manhole containing the municipal fire alarm circuit.
(10)
A master box will be installed and connected
directly to the Town's Fire Alarm System, on all industrial buildings,
commercial buildings, warehouses, office buildings, apartment houses,
lodging houses, schools, day-care centers, churches, restaurants,
nightclubs and any other building the Chief of the Fire Department
may require, due to its occupancy.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete clearing, excavation
or filling, preparation of subgrade, and backfilling for the construction
of waterlines as shown on the plans, in the proposal or as ordered
by the Engineer. This section includes the materials of construction,
pipe jointing materials and fittings, the placing of the material,
bracing of existing structures and all operations which are necessary
to complete the work. Excavation, backfill and restoration are covered
under their respective sections.
B.
General requirements.
(1)
The pipe and accessories shall be new and unused.
The interior of the pipe shall be thoroughly cleaned of foreign matter
before being placed in the trench and shall be kept clean during placing
operations by plugging or other approved method. The full length of
each section of pipe shall rest solidly upon the pipe bed, with recesses
excavated to accommodate bells and joints. Any pipe that has the grade
or joint disturbed after laying shall be taken up and relaid. Pipe
shall not be laid in water or when trench or weather conditions are
unsuitable for the work, except by permission of the Engineer. Water
shall be kept out of the trench until the materials in the joints
has hardened or until calking is completed. When work is not in progress,
open ends of pipe and fittings shall be securely closed so that no
trench water, earth or other substances will enter the pipes or fittings.
Any section of pipe found to be defective before or after placing,
shall be replaced with sound pipe without additional expense to the
owner. Fittings at bends in the pipeline shall be firmly wedged against
the vertical face of the trench, with concrete thrust blocks or as
directed by the Engineer, to prevent the fittings from being blown
from the lines when under pressure. No separate payment will be made
for thrust blocks. Pipe ends left for future connections shall be
valved, plugged or capped and anchored, as shown on the drawings or
as directed by the Engineer. Where connections are made between new
work and existing mains, the connections shall be made by using specials
and fittings to suit the actual conditions.
(2)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(3)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer.
(4)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(5)
Joints shall be as required for the various pipes
as called for on the plans in the itemized proposal or as ordered
by the Engineer and shall be installed, made up and inspected in accordance
with approved printed instruction of the manufacturer.
C.
Material.
(1)
Pipe shall be centrifugally cast in metal molds or
sand lined molds for water. All pipe shall meet AWWA Standard C 151
and ANSI Standard A-21-51. Pipe to be push-on joint type as described
in ANSI A-21-11 (AWWA C111) of latest revision complete with gaskets
and lubricant. Sizes four-inch, six-inch, eight-inch, ten-inch and
twelve-inch to be Thickness Class 52, size fourteen-inch to be Thickness
Class 51.
(2)
Materials shall be cement lined, paint seal coated
inside and tar coated outside in accordance with ANSI A-21-4 (AWWA
C104) of latest revision.
(3)
The pipe shall have been tested by the manufacturer
in accordance with ANSI/AWWA requirements and a certificate of compliance
shall be furnished by the manufacturer.
(4)
Specials and fittings for pipe four to 48 inches inclusive
in diameter shall be Class D, conforming to the American Water Works
Association Standard C100 or American Standard A21.11, unless otherwise
specified. Specials and fittings for use with mechanical joint pipe
shall conform to Paragraph 6.7 of Federal Specification WW-P-421.
(5)
Joints shall be of the bell and spigot, mechanical
or tyton type. Jointing material shall conform to the following requirements:
(a)
Bell and spigot joints joint packing:
[1]
Yarning or packing material shall consist of
one of the following: molded or tubular rubber rings; asbestos rope;
treated paper rope; hemp; or jute. The materials shall be handled
with care in order to prevent contamination and shall be dry when
put into place in the joint. The material shall be free of oil, tar
or grease. Hemp and jute shall be used only on Type II pipe conforming
to Federal Specification WWP-421 and shall be placed between the round
rubber gasket and the bituminous joint compound as shown in Figures
four and five of the Federal Specifications. Asbestos rope and treated
paper rope may be used with Type II pipe in lieu of hemp or jute.
Rubber gasket may be used without calking where bell end or pipe locks
gasket against displacement. Lead wedges shall be used to provide
electrical contact between lengths.
[2]
Calking lead shall conform to Federal Specification
QQ-L-156, Type 1.
(b)
Mechanical joints shall be of the stuffing box
type and shall conform to American Standard A21.11. Lead tipped rubber
gaskets shall be used.
(c)
Tyton joints shall be assembled using lubricant
and jacking tools as recommended by the manufacturer. The joint shall
be kept clean in all stages of assembly and disassembled and cleaned
whenever in doubt as to the quality of the joint. Two bronze wedges
per joint shall be placed as a final operation on each joint to provide
electrical contact. Wedges shall be applied evenly and diametrically
opposite each other.
(6)
Gate valves shall be designed for a minimum water
working pressure of not less than 150 pounds per square inch. Valves
shall have mechanical joint hub ends as required for the piping in
which they are installed. Gate valves shall have a clear waterway
equal to the full nominal diameter of the valve, and shall be opened
by turning counterclockwise. The operating nut or wheel shall have
an arrow, cast in the metal, indicating the direction of opening.
Each valve shall have the maker's initials, pressure rating and year
of manufacture cast on the body. Prior to shipment from the factory,
each valve shall be tested by hydraulic pressure equal to twice the
specified water working pressure. Valves shall be iron-body, brass-mounted
and shall conform the American Water Works Association Standard C500
or to Federal Specification WW-V-58, Class A, and shall be Catalog
No. 55. as manufactured by the Darling Valve Company at Williamsport,
Pennsylvania, List 15 No. F-5225, as manufactured by Eddy Valve Co.,
Waterford, New York or No. A-2380-21 by Mueller.
(7)
Combination air and vacuum air release valves shall
be installed at high points in the supply mains as shown on the drawings.
The valves shall be of proper size and type to relieve excess air
and to prevent the formation of a vacuum. The valves shall automatically
remove air from the lines when the lines are being filled with water,
and shall admit air into the lines when water is being withdrawn in
excess of the inflow. The valves shall also release small amounts
of air which collect in the line. Air release valves shall be Darling
No. DC20 or Eddy Valve Co. No. F-3066 or approved equal. Vacuum and
air release valve installation shall include curb stop and box.
(8)
Valve boxes shall be of cast iron, complete with cover.
Cast-iron boxes shall be of two-piece extension type with screw adjustment,
five and one-fourth-inch shaft, and with flared base. The minimum
thickness of metal shall be 3/16 inch. The word "water" shall be cast
in the cover. Boxes shall be installed over each outside gate valve
unless otherwise shown on the drawings. The boxes shall be of such
length as will be adapted, without full extension, to the depth of
cover required over the pipe at the valve location.
(9)
Fire hydrants.
(a)
Fire hydrants shall conform in all respects
to the latest AWWA Specifications. Fire hydrants shall be of a six-inch
M.J. connection, two-and-one-half-inch hose nozzle connections and
one five-and-one-hundred-five-thousandths-inch pumper connection.
The hydrants shall be designed for 150 pounds working pressure or
300 pounds hydrostatic test pressure. Working parts shall be bronze.
Hose threads shall be Village of Endicott, Endicott, New York, standard
threads. Hydrants shall be connected to the mains by six-inch diameter
M.J. pipe. Design, material and workmanship shall be similar and equal
to the latest stock pattern ordinarily produced by the manufacturer.
(b)
Hydrants shall meet the following requirements:
(c)
Hydrants shall be painted with one coat of zinc
chromate primer and two coats of yellow, Sonneborns Hydrant Enamel.
Hydrants shall be dry-barrel type, conforming to the American Water
Works Standard C502. Hydrants shall be of length suitable for a five-and-one-half-foot
trench. In order to meet special conditions of burial, the contractor
shall use hydrant extensions at the base of the hydrant. Payment will
be made for these extensions in increments of six inches. Each hydrant
shall have nozzle caps, chains and a chain holder.
(d)
Hydrants shall be manufactured by the American
Darling Company and shall be Model B-62-B, type regular with nonbreakable
rod coupling or equal as accepted by the Engineer.
(10)
Tapping gate valves shall be cast iron body
as manufactured by the Darling Valve and Manufacturing Company, or
an approved equal. Tapping sleeves shall be No. 1003 as manufactured
by the Darling Valve and Manufacturing Company, or an approved equal.
(11)
Run-of-bank gravel shall conform to Item 203.07,
Select Granular Fill, of the New York State Department of Transportation
Standard Specifications of latest issue.
(12)
Excavation shall conform to the requirements
for Section 203, Excavation and Embankment, of the New York State
Department of Transportation Standard Specifications of latest issue.
(13)
Sheeting shall conform to the requirements for
Section 107-05, Safety and Health Requirements, of the New York State
Department of Transportation Standard Specifications of latest issue.
D.
Method.
(1)
Pipe.
(a)
Handling pipe and accessories shall be handled
in such manner as to ensure delivery to the trench in sound, undamaged
condition. Particular care shall be taken not to injure the pipe coating.
No other pipe or material of any kind shall be placed inside of a
pipe or fitting after the coating has been applied.
(b)
Cutting of pipe shall be done in a neat and
workmanlike manner without damage to the pipe. Unless otherwise authorized
by the Engineer, cutting shall be done by means of an approved type
of mechanical cutter; wheel cutters or hydraulic cutters shall be
used when practicable.
(c)
Placing and laying. Before installation, the
pipe shall be inspected for defects and tapped with a light hammer
to detect cracks. Defective, damaged or unsound pipe will be rejected.
Deflections from a straight line or grade, as required by vertical
curves, horizontal curves or offsets, shall not exceed 6/D inches
per linear foot of pipe for pipe less than 14 inches in nominal diameter
or 4.5/D inches per linear foot of pipe for pipe 14 inches and larger
in diameter, where D represents the nominal diameter of pipe expressed
in inches between the center lines extended of any two connecting
pipes. If the alignment requires deflections in excess of these limitations,
special bends or a sufficient number of shorter lengths of pipe shall
be furnished to provide angular deflections within the limit set forth,
as approved by the Engineer. After a length of pipe is placed in the
trench, the packing material for the joint shall be held around the
bottom of the spigot so that the packing will enter the bell as the
pipe is pushed into position or rubber gasket may be inserted in the
bell before pushing the pipe into place. The spigot shall be centered
in the bell and the pipe pushed into position and brought into the
required alignment. Except where necessary in making connections with
other lines or as authorized by the Engineer, pipe shall be laid with
the bells facing in the direction of laying. Except at closures, not
less than two lengths of pipe shall be in position ahead of each joint,
with packing installed and earth fill tamped alongside the pipe, before
the joint is poured.
(2)
Joints.
(a)
Bell and spigot joints. Before jointing bell
and spigot pipe, all lumps, blisters and excess coating material shall
be removed from the bell and spigot ends of the pipes. All oil or
grease shall be removed. The outside of the spigot and the inside
of the bell shall be wire brushed and wiped clean and dry.
[1]
Joint packing shall be carefully placed and
tightly calked to a uniform thickness. No loose or frayed ends or
fiber shall protrude into the space to be filled with joint filler.
Each joint shall be carefully inspected and checked for proper depth
before the joint runner is attached. Pipe with bell end having approved
inside contour may be packed with rubber ring gasket without calking.
[2]
Lead-filled joints. The depth of lead in lead-filled
joints shall be not less than 2 1/4 inches back of the face of the
bell. Lead shall be heated in a melting pot kept near the joint poured,
brought to proper temperature so that when stirred, the surface will
show a rapid change in color, and when poured into the joint space
will ensure a perfect joint. Before lead is poured, scum shall be
removed. The joint runner shall fit snugly against the face of the
bell and the outside of the pipe and shall be dammed with clay at
the pouring gate, to assure filling the joint even with the top of
the bell. Each joint shall be made with one pour completely filling
the joint space. The calking shall be done by competent mechanics,
in such manner as to secure tight joints without overstraining the
bells. The calking shall progress toward the joint gate. If the packing
has been insufficiently calked, permitting the lead to be driven during
calking to a depth more than 1/4 inch from the face of the bell at
any point, the lead shall be removed and the joint remade.
(b)
Mechanical joints. Mechanical joints and tyton
joints shall be installed in strict accordance with the recommendations
of the joint manufacturer, as interpreted by the Engineer.
(3)
Setting valves, valve boxes and fire hydrants. Valves,
valve boxes and fire hydrants shall be installed where shown on the
drawings and directed by the Engineer and shall be set plumb. Valve
boxes shall be centered on the valves. Where feasible, valves shall
be located outside the area of roads and streets. Earth fill shall
be carefully tamped around each valve box to a distance of four feet
on all sides of the box or to the undisturbed trench face if less
than four feet. Fire hydrants shall be set at such elevations that
the connecting pipe will not have less cover than the distribution
mains. The hydrant shall be set upon and wedged with concrete as shown
on the plans or as directed by the Engineer. The hydrant, opposite
the pipe connection, shall be tied to a concrete block, to prevent
the hydrant from blowing off the line, as shown in the details. Not
less than seven cubic feet of broken stone shall be placed around
the base of the hydrant to ensure drainage. The backfill around hydrants
shall be thoroughly compacted to the grade line in a manner satisfactory
to the Engineer. Hydrants and valves shall have the interiors cleaned
of all foreign matter before installation. Stuffing boxes shall be
tightened and the hydrant or valve shall be inspected in open and
closed positions to ensure that all parts are in working condition.
Valve boxes located in roads or sidewalks shall be protected by a
concrete slab in accordance with the details shown on the drawings.
(4)
Tapping gate valve and sleeves. Tapping valves and
sleeves are to be assembled and installed in accordance with manufacturer's
instructions.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with run-of-bank gravel, compacted in six-inch
lifts, no stones larger than three inches. In pavement areas the remainder
of the trench shall be backfilled with run-of-bank gravel, compacted
in twelve-inch lifts, no stones larger than three inches. In open
areas, the remainder of the trench shall be backfilled with suitable
excavated material, compacted in twelve-inch lifts, no stones larger
than 12 inches, except for the top one foot of the trench, which shall
be run-of-bank gravel.
F.
Protection of new work.
(1)
Movement of construction equipment and all other vehicles
and loads over and adjacent to any pipe shall be done at the contractor's
risk. When determined by the Engineer, any pipe that is damaged or
disturbed through any cause, shall be replaced as ordered by the Engineer,
at the expense of the contractor and at no cost to the owner.
(2)
The contractor shall comply with Section 107-05E,
Guarding and Protection, of the New York State Department of Transportation
Standard Specifications of latest issue, when excavations are left
open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Cleaning and restoration of site.
(1)
After backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by Engineer.
The contractor shall restore all disturbed areas to the original condition.
After all work is completed, the contractor shall remove all tools
and other equipment used by him, leaving the entire site free, clear
and in good condition.
(2)
Cleaning and restoration of site is not payable directly,
but shall be considered as a subsidiary obligation of the contractor,
covered under the contract unit price bid for the pipe.
I.
Test for water mains. After the pipe is laid, the
joints completed and the trench partially backfilled, leaving the
joints exposed for examination, the newly laid piping or any valved
section of piping shall, unless otherwise specified, be subjected
for one hour to a hydrostatic pressure test of 50 pounds per square
inch in excess of the anticipated static pressure at points or reading
when the system is put in operation. Exposed pipe, joints, fittings,
valves and hydrants shall be carefully examined during the open-trench
test. Lead joints showing visible leakage shall be calked until tight.
Cracked or defective pipe, fittings, valves or hydrants disclosed
in the pressure test shall be replaced by the contractor with sound
material and the test shall be repeated until the test results are
satisfactory to the Engineer. Where an actual visible inspection of
each joint cannot be made because of the necessity for immediate backfilling
or where the line is laid below the water level and it is impracticable
to lower the water level by pumping or when the joints are made of
other material than lead and the leakage diminishes as the material
in the joints ages, suitable means shall be provided by the contractor
for determining the quantity of water lost by leakage under normal
operating pressure. No piping installation will be accepted until
or unless this leakage (evaluated on a pressure basis of 150 pounds
per square inch) is less than 100 United States gallons per 24 hours
per mile of pipe per inch nominal diameter of pipe in twelve-foot
lengths, 75 gallons for pipe in sixteen-foot lengths and proportionately
varied for other lengths of pipe. In calculating leakage, the Engineer
will make allowance for added joints in the pipeline above the normal
for unit lengths of pipe. Should any test of combined sections of
pipeline disclose leakage greater per mile than that hereinbefore
specified or should individual sections show leakage greater than
the specified limit, the contractor shall locate and repair the defective
joints until the leakage is within the specified limits. Pipelines
jointed with lead may be subjected to hydrostatic pressure, inspected
and tested for leakage at any time after partial completion of backfill.
Before the replacement of permanent paving and not less than 30 nor
more than 40 days after the pressure test, a measured leakage test
of the entire pipeline may be required at the discretion of the Engineer.
Leakage loss shall be within the allowances hereinbefore specified.
J.
Sterilization. Each unit of completed supply line
and distribution system shall be sterilized with chlorine before acceptance
for domestic operation.
(2)
Method. Sterilization shall be accomplished as described
below or by the system prescribed by the American Water Works Association
Standard C601 as determined by the Engineer. The amount of chlorine
applied shall be such as to provide a dosage of not less than 50 parts
per million. The chlorinating material shall be introduced to the
waterlines and distribution systems in a manner approved by the Engineer.
If possible to do so, the lines shall be thoroughly flushed before
the introduction of the chlorinating materials. After a contact period
of not less than eight and preferably 24 hours, the system shall be
flushed with clean water until the residual chlorine content is not
greater than 1.0 part per million. All valves in the lines being sterilized
shall be opened and closed several times during the contact period.
After flushing, samples of water shall be taken from each section
of main and an analysis made to determine the purity of the water.
Any section of main not meeting the standard of purity shall be rechlorinated
and tested until accepted. The results of the tests shall be given
to the Engineer. All costs for water tests will be paid for by the
contractor.
A.
Description. Under this section the contractor shall
furnish all plant, labor, equipment, appliances and materials and
perform all operations necessary to complete clearing, excavation
or filling, preparation of subgrade and backfilling for the construction
of waterlines as shown on the plans, in the proposal or as ordered
by the Engineer. This section includes the materials of construction,
pipe jointing materials and fittings, the placing of the material,
bracing of existing structures and all operations which are necessary
to complete the work. Excavation, backfill and restoration are covered
under their respective sections.
B.
General requirements.
(1)
The pipe and accessories shall be new and unused.
The interior of the pipe shall be thoroughly cleaned of foreign matter
before being placed in the trench and shall be kept clean during placing
operations by plugging or other approved method. The full length of
each section of pipe shall rest solidly upon the pipe bed, with recesses
excavated to accommodate bells and joints. Any pipe that has the grade
or joint disturbed after laying shall be taken up and relaid. Pipe
shall not be laid in water or when trench or weather conditions are
unsuitable for the work, except by permission of the Engineer. Water
shall be kept out of the trench until the materials in the joints
has hardened or until calking is completed. When work is not in progress,
open ends of pipe and fittings shall be securely closed so that no
trench water, earth or other substances will enter the pipes or fittings.
Any section of pipe found to be defective before or after placing
shall be replaced with sound pipe without additional expense to the
owner. Fittings at bends in the pipeline shall be firmly wedged against
the vertical face of the trench, with concrete trust blocks or as
directed by the Engineer, to prevent the fittings from being blown
from the lines when under pressure. No separate payment will be made
for thrust blocks. Pipe ends left for future connections shall be
valved, plugged or capped and anchored, as shown on the drawings or
as directed by the Engineer. Where connections are made between new
work and existing mains, the connections shall be made by using specials
and fittings to suit the actual conditions.
(2)
Applicable specifications. The following contains
some but not all of the requirements of the AWWA specifications and
standards. The issues listed below and hereafter by basic designation
only form a part of this specification. All the requirements of the
AWWA standards will apply and are part of this specification. American
Water Works Association (AWWA) standards and American National Standards
Institute (ANSI) standards:
[Amended 8-1-1990 by L.L. No. 12-1990]
|
Specification No.
|
Subject
| |
|---|---|---|
|
B300-80
|
Hypochlorites
| |
|
B301-59
|
Liquid Chlorine
| |
|
C500-80
|
Gate Valves for Ordinary Water Works Services
| |
|
C502-80
|
Fire Hydrants for Ordinary Water Works Service
| |
|
C600-77
|
Installation of Cast Iron Water Lines
| |
|
C601-81
|
Disinfecting Water Mains
| |
|
C104/A21.4-80
|
Cement Mortar Lining for Gray Iron and Ductile
Iron Pine and Fittings for Water
| |
|
C106/A21.6-80
|
Cast Iron Pipe Centrifugally Cast in Metal Molds,
for Water and other Liquids
| |
|
C110/A21.10.77
|
Gray Iron and Ductile Iron Fittings, 3 inch
to 48 inch, for Water and other Liquids
| |
|
C111/A21.11-80
|
Rubber Gasket Joint for Gray Iron and Ductile
Pressure and Pipe Fittings
| |
|
C151/A21.51-76
|
Ductile Iron Pipe Centrifugally Cast in Sand-Lined
Molds, for Water and other Liquids
|
(3)
Standard details. Pipe shall be placed in accordance
with the requirements of the construction standards of the Town of
Union.
(4)
Excavation and backfill. All material of every description
and nature, necessary for proper installation of the work, shall be
excavated down to the depth as shown on the plans or as ordered by
the Engineer.
(5)
Porous fill material shall be used to replace unsuitable
material where ordered by the Engineer.
(6)
Joints shall be as required for the various pipes
as called for on the plans, in the itemized proposal or as ordered
by the Engineer and shall be installed, made up and inspected in accordance
with approved printed instruction of the manufacturer.
C.
Material.
(1)
Gray iron pipe shall conform to ANSI/AWWA Standards
C111/A21.11, C106/A21.6, Class 22 unless shown otherwise in the plans
or proposal, and ductile iron pipe shall conform to ANSI/AWWA Standards
C111/A21.11 and C151/A21.51, Class 51 unless shown otherwise in the
plans or proposal. The pipe shall be furnished with lead tipped gaskets.
Pipe shall be furnished with mechanical joints or approved joints
with rubber ring gaskets of such size and shape to provide an adequate
compressive force against the plain end and socket after assembly
to effect a positive seal under all combinations of joint and gasket
tolerances, similar to the tyton joints furnished by United States
Pipe and Foundry Company. Pipe and fittings shall be furnished with
cement mortar lining and conforming to ANSI/AWWA Standard C104/A21.4.
(2)
The pipe shall have been tested by the manufacturer
in accordance with ANSI/AWWA requirements and a certificate of compliance
shall be furnished by the manufacturer.
(3)
Specials and fittings. Specials and fittings for gray
iron pipe three to 48 inches inclusive in diameter shall conform to
the ANSI/AWWA Standards C104/A21.4, C111/A21.11 and C110/A21.10 unless
otherwise specified. Specials and fittings for ductile iron pipe shall
conform to the ANSI/AWWA Standards C104/A21.4, C111/A21.11 and C110/A21.10
unless otherwise specified. All specials and fittings shall have a
minimum working pressure rating of 250 pounds per square inch.
(4)
Joints.
(a)
Mechanical joints shall be of the stuffing box
type and shall conform to American Standard A21.11. Lead tipped rubber
gaskets shall be used.
(b)
Tyton joints shall be assembled using lubricant
and jacking tools as recommended by the manufacturer. The joint shall
be kept clean in all stages of assembly and disassembled and cleaned
whenever in doubt as to the quality of the joint. Two bronze wedges
per joint shall be placed as a final operation on each joint to provide
electrical contact. Wedges shall be applied evenly and diametrically
opposite each other.
(5)
Gate valves shall be designed for a minimum water
working pressure of 200 pounds per square inch unless otherwise shown
on the plans. Valves shall have mechanical joint hub ends unless otherwise
shown on the drawings, as required for piping in which they are installed.
Gate valves shall have a clear waterway equal to the full nominal
diameter of the valve and shall be opened by turning counterclockwise.
The operating nut or wheel shall have an arrow, cast in the metal,
indicating the direction of opening. Each valve shall have the maker's
initials, pressure rating and year of manufacture cast on the body.
Prior to shipment from the factory, each valve shall be tested by
hydraulic pressure equal to twice the specified water working pressure.
Valves shall be iron-body, resilient wedge or seat gate valve with
nonrising stem and shall conform to the American Water Works Association
Standard C500 or to Federal Specification WW-V-58, Class A. Valves
12 inches and smaller shall be as manufactured by Clow Corporation,
Mueller Co. or approved equal.
(6)
Corporation stops shall be 3/4 inch Mueller No. H
15000, with brass cap Mueller No. H 15540 or approved equal.
(7)
Valve boxes shall be of cast iron, complete with cover.
Cast iron boxes shall be of two-piece extension type with screw-type
adjustment and with flared base. The word "water" shall be cast in
the cover. Boxes shall be installed over each outside gate valve unless
otherwise shown on the drawings. The boxes shall be of such length
as will be adapted, without full extension, to the depth of cover
required over the pipe at the valve location. Valve boxes shall be
as manufactured by the Central Foundry or Mueller Company or approved
equal.
(8)
Fire hydrants.
(a)
Fire hydrants shall conform in all respects
to the latest AWWA specifications. Fire hydrants shall have a six-inch
M.J. connection, two-and-one-half-inch national standard hose thread
hose connections, and one four-inch pumper connection. Pumper hose
connections shall be Village of Johnson City, New York standard threads.
The hydrants shall be designed for 150 pounds per square inch (psi)
working pressure or 300 pounds per square inch hydrostatic test pressure
unless otherwise indicated on the drawings as a high pressure hydrant
(minimum working pressure 175 pounds per square inch, 350 pounds per
square inch hydrostatic test pressure). Working parts shall be bronze.
Hydrants shall be connected to the mains by six-inch diameter M.J.
pipe. Design, material and workmanship shall be similar and equal
to the latest stock pattern ordinarily produced by the manufacturer.
(b)
Size of hydrant.
[1]
Hydrants shall be five-and-one-fourth-inch with
Break Flange Construction.
[2]
The operating nut is to be one inch square and
is to open to the left.
[3]
Hydrants shall be furnished in a length suitable
for five-and-one-half-foot bury (ground line to bottom of connecting
pipe).
[4]
The manufacturer of hydrants is to check and
comply with Village of Johnson City standards prior to manufacture.
(c)
Hydrants shall be dry-barrel type, conforming
to the American Water Works Association Standard C502.
(d)
Hydrants shall be painted with one coat of zinc
chromate primer and two finishing coats of Sonneborns Hydrant Enamel
or approved equal. Finish coats shall be yellow, trimmed with black
caps and operator nut.
(e)
In order to meet special conditions of burial,
the contractor shall use hydrant extensions as made for the hydrant.
Payment will be made for these extensions per linear foot. Each hydrant
shall have nozzle caps, chains and a chain holder.
(f)
Hydrants shall be Clow-Eddy hydrants as manufactured
by Clow Corporation or approved equal.
(9)
Run-of-bank gravel shall conform to Item 203.07, Select
Granular Fill, of the New York State Department Standard Specifications
of latest issue.
(10)
Excavation shall conform to the requirements
for Section 203, Excavation and Embankment, of the New York State
Department of Transportation Standard Specifications of latest issue.
(11)
Sheeting shall conform to the requirements for
Section 107-05, Safety and Health Requirements, of the New York State
Department of Transportation Standard Specifications of latest issue.
D.
Method.
(1)
Pipe.
(a)
Handling pipe and accessories shall be handled
in such manner as to ensure delivery to the trench in sound, undamaged
condition. Particular care shall be taken not to injure the pipe coating.
No other pipe or material of any kind shall be placed inside of a
pipe or fitting after the coating has been applied.
(b)
Cutting of pipe shall be done in a neat and
workmanlike manner without damage to the pipe. Unless otherwise authorized
by the Engineer, cutting shall be done by means of an approved type
of mechanical cutter; wheel cutters or hydraulic cutters shall be
used when practicable.
(c)
Placing and laying. Before installation, the
pipe shall be inspected for defects and tapped with a light hammer
to detect cracks. Defective, damaged or unsound pipe will be rejected.
Deflections from a straight line or grade, as required by vertical
curves, horizontal curves or offsets, shall not exceed 6/D inches
per linear foot of pipe for pipe less than 14 inches in nominal diameter
or 4.5/D inches per linear foot of pipe for pipe 14 inches and larger
in diameter, where D represents the nominal diameter of pipe expressed
in inches between the center lines extended of any two connecting
pipes. If the alignment requires deflections in excess of these limitations,
special bends or a sufficient number of shorter lengths of pipe shall
be furnished to provide angular deflections within the limit set forth,
as approved by the Engineer. After a length of pipe is placed in the
trench, the packing material for the joint shall be held around the
bottom of the spigot so that the packing will enter the bell as the
pipe is pushed into position or rubber gasket may be inserted in the
bell before pushing the pipe into place. The spigot shall be centered
in the bell and the pipe pushed into position and brought into the
required alignment. Except where necessary in making connections with
other lines or as authorized by the Engineer, pipe shall be laid with
the bells facing in the direction of laying. Except at closures, not
less than two lengths of pipe shall be in position ahead of each joint,
with packing installed and earth fill tamped alongside the pipe, before
the joint is poured.
(2)
Joints. Mechanical joints and tyton joints shall be
installed in strict accordance with the recommendations of the joint
manufacturer, as interpreted by the Engineer.
(3)
Setting valves, valve boxes and fire hydrants. Valves,
valve boxes and fire hydrants shall be installed where shown on the
drawings and directed by the Engineer and shall be set plumb. Valve
boxes shall be centered on the valves. Where feasible, valves shall
be located outside the area of roads and streets. Earth fill shall
be carefully tamped around each valve box to a distance of four feet
on all sides of the box, or to the undisturbed trench face if less
than four feet. Fire hydrants shall be set at such elevations that
the connecting pipe will not have less cover than the distribution
mains. The hydrant shall be set upon and wedged with concrete as shown
on the plans or as directed by the Engineer. The hydrant, opposite
the pipe connection, shall be tied to a concrete block to prevent
the hydrant from blowing off the line, as shown in the details. Not
less than seven cubic feet of broken stone shall be placed around
the base of the hydrant to ensure drainage. The backfill around hydrants
shall be thoroughly compacted to the grade line in a manner satisfactory
to the Engineer. Hydrants and valves shall have the interiors cleaned
of all foreign matter before installation. Stuffing boxes shall be
tightened and the hydrant or valve shall be inspected in open and
closed positions to ensure that all parts are in working condition.
Valves boxes located in roads or sidewalks shall be protected by a
concrete slab in accordance with the details shown on the drawings.
(4)
Tapping gate valve and sleeves. Tapping valves and
sleeves are to be assembled and installed in accordance with manufacturer's
instructions.
E.
Backfill. The excavated trench shall be backfilled
to one foot above the pipe with run-of-bank gravel, compacted in six-inch
lifts, no stones larger than three inches. In pavement areas, the
remainder of the trench shall be backfilled with run-of-bank gravel,
compacted in twelve-inch lifts, no stones larger than three inches.
In open areas, the remainder of the trench shall be backfilled with
suitable excavated material, compacted in twelve-inch lifts, no stones
larger than 12 inches, except for the top one foot of the trench,
which shall be run-of-bank gravel.
F.
Protection of new work.
(1)
Movement of construction equipment and all other vehicles
and loads over and adjacent to any pipe shall be done at the contractor's
risk. When determined by the Engineer, any pipe that is damaged or
disturbed through any cause shall be replaced as ordered by the Engineer,
at the expense of the contractor and at no cost to the owner.
(2)
The contractor shall comply with Section 107-05E,
Guarding and Protection, of the New York State Department of Transportation
Standard Specifications of latest issue, when excavations are left
open overnight and on nonworking days.
G.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements of Section 700, Materials Details,
of the New York State Department of Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his own expense.
H.
Cleaning and restoration of site.
(1)
After backfill is completed, the contractor shall
dispose of all surplus material, dirt and rubbish from the site. Surplus
dirt may be deposited in embankment, shoulders or as ordered by the
Engineer. The contractor shall restore all disturbed areas to the
original condition. After all work is completed, the contractor shall
remove all tools and other equipment used by him, leaving the entire
site free, clear and in good condition.
(2)
Cleaning and restoration of site is not payable directly,
but shall be considered as a subsidiary obligation of the contractor,
covered under the contract unit price bid for the pipe.
I.
Test for water mains.
(1)
After the pipe is laid, the joints completed and the
trench backfilled, the newly laid piping or any valved section of
piping shall be subjected for two hours to a leakage test and a hydrostatic
pressure test 11/2 times the anticipated static pressure at the points
of reading when the system is put in operation in accordance with
the requirements of ANSI/AWWA Specifica-tion C600-77. Exposed pipe,
joints, fittings, valves and hydrants shall be carefully examined
during the open-trench test. Cracked or defective pipe, fittings,
valves or hydrants disclosed in the pressure test shall be replaced
by the contractor with sound material and the test shall be repeated
until the test results are satisfactory to the Engineer. No piping
installation will be accepted until or unless this leakage (evaluated
on a pressure basis of 150 pounds per square inch) is less than 17
United States gallons per 24 hours per mile of pipe per inch nominal
diameter of pipe in twelve-foot lengths, 13 gallons for pipe in sixteen-foot
lengths and proportionately varied for other lengths of pipe. In calculating
leakage, the Engineer will make allowance for added joints in the
pipeline above the normal for unit lengths of pipe. Should any test
of combined sections of pipelines disclose leakage greater per mile
than that hereinbefore specified or should individual sections show
leakage greater than the specified limit, the contractor shall locate
and repair the defective joints until the leakage is within the specified
limits. Before the replacement of permanent paving and not less than
30 or more than 40 days after the pressure test, a measured leakage
test of the entire pipeline may be required at the discretion of the
Engineer. Leakage loss shall be within the allowances hereinbefore
specified.
(2)
The contractor shall install necessary corporation
stops for testing purposes or at locations of dead ended lines for
mechanically relieving entrapped air if no other air release device
is indicated on the plans.
J.
Sterilization. Each unit of completed supply line
and distribution system shall be sterilized with chlorine before acceptance
for domestic operation.
(2)
Method. Sterilization shall be accomplished by the
system prescribed by the American Water Works Association Standard
C601 except that the tablet method shall not be used. The amount of
chlorine applied shall be such as to provide a dosage not less than
25 parts per million. The lines shall be thoroughly flushed before
introduction of the chlorinating materials. After a contact period
of not less than 24 hours, the chlorine concentration shall be at
least 10 parts per million, after which the system shall be flushed
with clean water until the residual chlorine content is not greater
than 1.0 part per million. After flushing, samples of water shall
be taken from each section of main and an analysis made to determine
the purity of the water. Any section of main not meeting the New York
State Standards for purity shall be rechlorinated and tested until
acceptable. The results of the tests shall be given to the Engineer.
All costs for water tests will be paid for by the contractor.
A.
Description. Under this section the contractor shall
furnish all plant, labor, material, equipment and appliances and perform
all operations necessary to complete application of a white pigmented
membrane curing compound to the exposed surfaces of concrete curb
and gutter, concrete sidewalk or concrete structures as shown on the
plans or as ordered by the Engineer.
B.
General requirements.
(1)
Standard details. White-pigmented membrane curing
compound shall be applied in accordance with the construction standards
of the Town of Union.
(2)
White-pigmented membrane curing compound shall consist
of finely ground white pigment and a wax-free vehicle, reading mixed
for immediate use without alteration.
C.
Material. Curing compound shall conform to the requirements
for Section 711-05, Membrane Curing Compound, of the New York State
Department of Transportation Standard Specifications of latest issue.
D.
Method. The curing compound shall be applied to the
exposed surfaces (i.e., all surfaces which are subject to drying and
rapid loss of water) as soon as possible after final finishing and
no later than one hour after final finishing. Application shall be
at the rate of one gallon per 150 square feet.
[Added 3-2-2005 by L.L. No. 3-2005;
amended 12-2-2009 by L.L. No. 15-2009]
A.
Description. Under this section the contractor shall
furnish all labor, equipment, materials and supplies in performing
all operations necessary in connection with the application of a single
bituminous surface treatment upon the designated surface, in complete
and strict accordance with the specifications contained herein, or
as specifically directed by the Engineer. The bituminous surface treatment
shall consist of properly applied asphalt emulsion and aggregate,
spread evenly on the surface, and compacted, as specified herein,
and as directed by the Engineer. The surface treatment, when cured,
shall have an homogenous appearance, fill all cracks, and adhere firmly
to the adjacent surface, and shall have a skid-resistant texture.
B.
General requirements.
(1)
Standard details. This work shall consist of the construction
of a single-course bituminous surface treatment in accordance with
these specifications and the construction standards of the Town of
Union or Broome County, within their respective right-of-way.
(2)
The publications listed below form a part of this
specification to the extents referenced. The publications are referred
to in the text by the basic description only.
(b)
American Society for Testing and Materials (ASTM):
[1]
C-88, Soundness of Aggregate by Magnesium Sulfate.
[2]
C-127, Specific Gravity and Absorption of Coarse
Aggregate.
[3]
C-136, Sieve Analysis of Coarse Aggregates.
[4]
D-5, Penetration of Bituminous Material.
[5]
D-75, Sampling Stone, Slag and Gravel for use
as Highway Materials.
[6]
D-113, Ductility for Bituminous Materials.
[7]
D-244, Testing Emulsified Asphalts.
[8]
D-977, Emulsified Asphalts.
[9]
D-1369, Quantities for Bituminous Surface Treatments.
[10]
D-2042, Solubility of Asphalt Materials in Trichloroethylene.
[11]
D-2397, Cationic Emulsified Asphalt.
[12]
D-2995, Determining Application Rate of Distributors.
C.
Material.
(1)
Bituminous materials. The bituminous material required
for the surface treatment course shall meet the requirements of NYSDOT
Section 702, Bituminous Materials (for HFRS-2P see Table 3-1). The
type and grade of bituminous material shall be HFMS2, RS-2, CRS-2,
HFRS2 or HFRS-2P. The type of emulsion and rate of application shall
be determined based on the required test patches. The bituminous material
shall be supplied from a firm listed as a supplier on the NYSDOT approved
list of liquid bituminous material primary sources and/or suppliers.
Copies of the approved list and written procedures for achieving and
maintaining approved list status are available from NYSDOT Materials
Bureau, 1220 Washington Avenue, Albany, NY 12232. If the specified
bituminous material is not compatible with the aggregate type selected
for use at the time of construction, the Engineer may order the contractor
to provide an alternate bituminous material.
(2)
Aggregates.
(a)
The aggregates for surface treatments shall
be crushed stone, crushed gravel or crushed slag meeting the requirements
of NYSDOT Section 703-02, Coarse Aggregates. In addition, any aggregate
used for surface treatment on pavement shall not contain more than
5% chert. Nor shall the amount of material passing the 200 sieve exceed
1.0%.
(b)
The aggregate size for single course on pavements
shall be NYSDOT No. 1 ST or No. 1A, as determined by the Engineer.
D.
Method.
(1)
Bituminous surface treatment, two-course for pavements.
(a)
Weather limitations. Bituminous material shall
not be applied to an excessively wet surface, when the ambient air
temperature is less than 50° F. and falling or when weather conditions
would prevent the proper construction of the surface treatment. The
surface on which the bituminous material is applied shall have a temperature
of 50° F. or higher. The operation should not be carried out in
the rain or when rain is threatening.
(b)
Equipment:
[2]
A bituminous distributor shall be so designed,
equipped, maintained and operated so that the bituminous material
at even heat can be applied uniformly on variable widths of surface
up to 15 feet at readily determined and controlled rates from 0.05
to 2.0 gallons per square yard, with uniform pressure, and with an
allowable variation from any specified rate not to exceed 0.02 gallons
per square yard. Distributor equipment shall include tachometer, accurate
volume measuring devices or a calibrated tank, and a thermometer for
measuring temperatures of tank contents. Distributors shall be equipped
with a separate power unit for the pump, and full circulation spray
bars adjustable laterally and vertically.
[3]
The distributor and/or transport shall be equipped
with a sampling valve so designed and installed as to be non-clogging
and safe. The type of valve and its general location shall be according
to written instructions by the NYSDOT Materials Method 8.1. When samples
are taken through such valves, in accordance with NYSDOT Materials
Method 8.2. instructions, they shall be considered representative
of all material in the tank.
[4]
The pneumatic tire rollers shall be self-propelled
and have oscillating wheels with smooth tread tires. The tire or contact
pressure shall be specified by the Engineer. The Engineer will require
a sufficient number of pneumatic tire rollers to permit initial rolling
of the aggregate to occur within five minutes of the application of
the bituminous materials and the final of the three coverages to be
completed within 30 minutes of the application of the bituminous material.
The rollers shall be operated at a maximum speed of five miles per
hour.
[5]
The aggregate spreader shall be a self-propelled
unit capable of uniformly spreading the aggregate at a rate and width
specified by the Engineering with an allowable variation not to exceed
0.5 pounds per square yard. The spreader hopper shall have a minimum
spread width of 12 feet with gate openings graduated so that the spread
widths can be adjusted in six-inch increments. The spreader shall
be equipped with a self-locking hitch with a minimum ninety-degree
vertical movement. The machine shall have sufficient power and traction
to pull loaded aggregate trucks on any street/road to be surface treated.
The spreader shall meet the approval of the Engineer.
(c)
Determination of the quantities of materials
to be applied. The quantity of bituminous material to be used shall
be in a range of 0.25 to 0.50 gallons per square yard unless directed
otherwise by the Engineer. Cover aggregate shall be spread in the
range of 15 to 25 pounds per square yard unless otherwise directed
by the Engineer. To determine the rate to be used, the contractor
shall place a minimum of three test patches at locations determined
by the Engineer for each aggregate size. Each test patch shall be
approximately three square yards and placed with the quantity of bituminous
material and aggregate as directed by the Engineer. All test patches
shall be compacted in the same manner as required by these specifications.
Construction of the test patches shall be completed a minimum of 14
days prior to the placement of the bituminous surface treatment. The
quantity of bituminous material and aggregate to be used will be determined
by the Engineer after observing the performance of the test patches.
The Engineer will not require test patches on each street but rather
patches in three representative areas for 1ST and 1A stone application.
Surface preparation which may include pothole patching, truing and
leveling, adjusting of irons (valve covers, manhole covers, drop inlet
gratings), etc. will be the responsibility of the street municipality
and will be completed before the contractor moves onto the job. A
power broom shall be used to clean any loose material from the pavement
surface before the bituminous material is applied. Manhole covers,
drop inlets, catch basins, curbs and any other structures within the
shoulder areas should be protected against the application of the
surface treatment materials.
(d)
Applying liquid bituminous materials. Bituminous
materials shall be applied by means of a pressure distributor in a
uniform continuous spread over the section to be treated and within
the temperature range specified. The quantity of bituminous material
to be spread shall be as determined by the Engineer. The allowable
variation from this quantity shall not exceed 0.02 gallons per square
yard. A strip of building paper, at least three feet in width and
with a length equal to that of the spray bar of the distributor plus
one foot, shall be used at the beginning of each spread. If the cut-off
is not positive, the use of paper may be required at the end of each
spread. The paper shall be removed and disposed of in a satisfactory
manner. The distributor shall be moving forward at a proper application
speed at the time the spray bar is opened. Any skipped areas or deficiencies
shall be corrected. Junctions of spreads shall be carefully made to
assure a smooth riding surface. The bituminous material shall not
be applied more than 300 feet in advance of the self-propelled stone
spreader. The spread of bituminous material shall not be more than
six inches wider than the width covered by the cover coat material
from the spreading device. Under no circumstances shall operations
proceed in such a manner that bituminous material will be allowed
to chill, set up, dry, or otherwise impair retention of the cover
aggregates. The distributor, when not spreading, shall be parked so
that the spray bar or mechanism will not drip bituminous material
on the surface of the traveled way.
(e)
Application of the cover aggregate. Immediately
following the application of bituminous material, cover aggregate
shall be spread at the rate determined by the Engineer. The allowable
variation from this rate shall not exceed one pound per square yard.
All aggregate used bituminous surface treatment shall be clean as
determined by visual inspection of the Engineer at the time of placement.
Spreading shall be accomplished in such a manner that the tires of
the aggregate spreader at not time contact the uncovered and newly
applied bituminous material. Immediately after the cover aggregate
is spread, any deficient areas shall be covered by additional material.
If the application of the aggregate cover by the spreader is not uniform,
the Engineer may order the contractor to repair the section before
rolling. Pneumatic tired rolling shall begin immediately and shall
be continued until three complete coverages are obtained within 30
minutes of the application of the bituminous material. Any free bituminous
material on the surface caused by a deficient amount of cover aggregate
shall be covered in such a manner so as not to displace imbedded material.
Excess material shall be swept from the entire surface by means of
brooms. The surface shall be swept at the time determined by the Engineer.
(f)
Traffic control.
[1]
Traffic control in work zones shall be provided
as per the NYS Manual of Uniform Traffic Devices and all signs, barricades,
and signaling devices will be in accordance with this manual to protect
both the public and the contractor's personnel. Flaggers will be provided
to guide and direct traffic around contractor's operation and to control
traffic speed on completed work.
[2]
Opening to traffic.
[a]
Unless otherwise specified, the highway shall
be kept open to traffic at all times. Traffic shall be discontinued
on the lane being surface treated; and as soon as the final layer
is applied and rolled, controlled traffic may be permitted thereon.
Traffic shall be maintained at a speed not to exceed 15 miles per
hour for a period of four hours after placement of the surface treatment
by the use of two-way radio-equipped patrol vehicles in accordance
with the maintenance and protection of traffic details shown on the
plan.
[b]
All patrol vehicles shall be equipped with signs
meeting the requirements of Section 254.4 of the Manual of Uniform
Traffic Control Devices The required number of two-way-radio-equipped
vehicles shall be as follows:
|
Lane Miles Length of Surfacing for Past
4 Hours
|
Number of Patrol Vehicles
| |
|---|---|---|
|
1
|
1
| |
|
2
|
3
| |
|
3
|
4
| |
|
4
|
6
| |
|
5
|
7
| |
|
6
|
9
| |
|
7
|
10
|
E.
Protection of new work. The contractor shall assume
full responsibility for any contamination and/or degradation of any
part of this course during construction and shall, at his own expense,
remove any and all portions of this course which do not conform to
the requirements of these specifications and replace these portions
with specified material.
F.
Samples and testing.
(1)
All materials and products to be used in the construction
shall meet the quality requirements in Section 700, Materials Details,
of the New York State Department of "Transportation Standard Specifications
of latest issue.
(2)
Any work performed with materials that fail to meet
the required tests shall be removed and replaced by the contractor
at his expense.
|
Table 3-1
Specifications for High-Float Asphalt
HFRS-2P (Polymer Modified)
| |
|---|---|
|
The emulsion is a high-float, rapid-setting
emulsion. It shall be homogeneous and shall meet the following requirements.
| |
|
Polymer modified conform to the following:
|
|
Minimum
|
Maximum
| ||||
|---|---|---|---|---|---|
|
Properties (a)
| |||||
|
Viscosity, Saybolt Furol @ 122° F.
|
(SOC), sec
|
100
|
400
| ||
|
Storage stability, 24 hour, %
|
1.0
| ||||
|
Demulsibility, 0.02 N CaCl2,%
|
60
| ||||
|
Sieve test1%
|
0.10
| ||||
|
Polymer, Wt. %
|
2
| ||||
|
Distillation (b)
| |||||
|
Oil distillate, by volume of emulsion, %
|
3.
| ||||
|
Residue from distillation,
|
63
| ||||
|
Tests on residue from distillation:
| |||||
|
Penetration, 77° F. (25 C) bOg., 5 sec
|
100
|
200
| |||
|
Ductility, 39.2° F. (4 C), 5cm/minute, cm.
|
50
| ||||
|
Float test @ 140° F. (60 C), sec
|
1,200
| ||||
|
Solubility in trichloroethylene, %
|
97.5
| ||||
|
Viscosity @ 140°F, @ sec-1, Poise (c)
|
1,500
| ||||
(a)
All tests shall be run in accordance with ASTM
D-244 except as noted.
(b)
ASTM D-244 except that the maximum temperature
that the material shall be subjected to is 383° F. ilO° F.
(c)
ASTM Method P-160 published 1984.
|
The emulsion shall remain homogeneous and usable
for a minimum of 30 days. The supplier will not be held responsible
for emulsion test of samples that have frozen before testing.
| |
|
The polymer shall be added at the time of manufacture
of the emulsion.
| |
|
Material that does not fully comply with these
specifications will be rejected. The supplier shall be responsible
for the cost and disposal of rejected material.
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If the low bidder is unable to supply material
as specified when ordered, the right is reserved to order material
from the next bidder and bill the low bidder any additional incurred
costs.
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