[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
The
developer whose intent is the creation of new streets in the development
of any residential or non-residential subdivision shall adhere to
the construction standards set forth in this Chapter.
B.
The
developer shall be responsible for addressing each of the areas in
the project's construction specification documents.
1.
The design plans and construction specifications shall be approved
by the Director of Public Works prior to any work taking place.
2.
The developer will coordinate all necessary inspections prior to
the commencement of any work.
3.
All expenses that relate to required tests of concrete, gradation,
compaction or special inspections shall be born solely by the developer.
Any costs associated with the relocation or modification of existing
utility infrastructure to support the developer's project shall be
the sole responsibility of the developer.
C.
Development
of all street infrastructure will be guided by strict compliance of
the approved design plans and specifications. Until reviewed and approved
by the City Engineer, no changes or modifications shall be authorized
and no deviations permitted from the originally approved design plans
and project specifications. Change orders and design modifications
will be submitted by the developer's project engineer only and no
other person.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Clearing And Grubbing. Clearing and grubbing shall consist
of removing, cutting and disposing of all brush, vegetation, logs,
stumps, rubbish and other materials occurring within the limits of
the improvement which will interfere with the excavation or which
are unsuitable to be left in the roadway foundation. This shall also
include the cutting, removing and disposing of all trees and stumps
except those that will not interfere with the construction and not
shown on the plans. The developer shall exercise due care in his construction
operations to prevent marring or scarring of trees that are to remain.
B.
Stumps
and roots in excavated or fill areas where depth of excavation or
fill does not exceed three (3) feet shall be removed to a depth of
eighteen (18) inches below subgrade.
C.
In
fill areas where more than three (3) feet of embankment is required,
trees and stumps shall be cut off at the surface of the ground.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
Where excavation, including borrow areas, or fill occurs, topsoil
shall be stripped to a depth of six (6) inches. Topsoil shall be spread
on areas at locations directed, indicated or specified or spread uniformly
in borrow areas.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
The
developer shall perform excavation of every type of material encountered
within the limits of the project to the lines, grades and elevations
indicated and as specified in this Section. Satisfactory excavated
materials shall be transported to and placed in fill or embankment
areas within the limits of the work. Unsatisfactory materials encountered
within the limits of the work shall be excavated below grade and replaced
with satisfactory materials as directed. Such excavated material and
the satisfactory material ordered as replacement shall be included
in excavation. Surplus satisfactory excavated material not required
for fill or embankment or unsatisfactory excavated material shall
be uniformly spread within the work area. During construction, excavation
and filling shall be performed in a manner and sequence that will
provide proper drainage at all times. Material required for fill or
embankment in excess of that produced by excavation shall be obtained
from the borrow areas off of construction limits at the developer's
responsibility. Excavations below indicated depths will not be permitted
except to remove unsatisfactory material.
B.
Classification Of Excavation. No consideration will be given
to the nature of the materials and all excavation will be designed
as unclassified excavation.
C.
Preparation Of Ground Surface For Embankments. Ground surface
on which fill is to placed shall be stripped of live, dead or decayed
vegetation, rubbish, debris and other unsatisfactory material. The
prepared ground surface shall be scarified and moistened or aerated
as required just prior to placement of embankment materials to assure
adequate bond between embankment material and the prepared ground
surface.
D.
Earth Embankments. Earth embankments shall be constructed
from satisfactory materials free of organic or frozen material and
rocks with maximum dimensions greater than three (3) inches. The material
shall be placed in successive horizontal layers of loose material
not more than eight (8) inches in depth. Each layer shall be spread
uniformly on a prepared surface, i.e., a soil surface that has been
moistened or aerated as necessary and scarified or otherwise broken
up in such a manner that the fill will bond with the surface on which
it is placed. Areas under proposed structures and areas to be surfaced
shall be compacted to at least ninety percent (90%) maximum density
for cohesive materials or ninety-five percent (95%) maximum density
for cohesion less materials. All other areas be compacted to eighty-five
percent (85%) and ninety percent (90%) respectively. Method of tests
shall be in accordance with ASTM Standard D 1556.
E.
Stepped Fill. Everywhere there is new fill adjacent to existing
soil, the new fill shall be "stepped". Stepping involves placing the
new fill in six (6) inch compacted lifts where the existing soil or
fill has been "stepped" by the removal of a variable amount of soil.
The step shall be a minimum of twelve (12) inches vertical and will
provide a bench of soil to place the new lift onto. The resulting
fill will then be a cohesive unit that inhibits slippage.
1.
Maximum density. Areas under proposed structures
and areas to be surfaced shall be compacted to at least ninety percent
(90%) maximum density for cohesive materials or ninety-five percent
(95%) for cohesion materials. All other areas shall be compacted to
eighty-five percent (85%) and ninety percent (90%) respectively.
2.
Method of tests. Tests shall be in accordance with
ASTM Standard D 1556. Copies of all density test results shall be
submitted to the City of St. Robert Public Works Department upon the
completion of each test.
F.
Rock Embankments. Rock embankments shall be placed in successive
horizontal layers of loose material not more than twenty-four (24)
inches in depth. Pieces of rock larger than twenty-four (24) inches
in greatest dimension shall not be used. Each layer of material shall
be spread uniformly and compacted until the interstices are filled
with well-compacted materials and the entire layer is a densely compacted
mass. Each successive layer of material shall adequately bond to the
material on which it is placed.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Subgrades
shall be shaped to line, grade and cross section and compacted as
specified in this Section. This operation shall include plowing, disking
and any moistening or aerating required to obtain proper compaction.
Soft or otherwise unsatisfactory material shall be removed and replaced
with satisfactory excavated material or other approved material as
directed.
B.
Finishing. The surface of all excavations, embankments and
subgrades shall be finished to a reasonably smooth and compact surface
substantially in accordance with the lines, grades and cross sections
or elevations shown on the drawings. This process shall be repeated
until all irregularities are removed. Extreme care shall be taken
in shaping the subgrade, so that at no place will the completed pavement
vary from the specified thickness. All soft and yielding spots shall
be removed to a depth of not to exceed two (2) feet and all vegetable
substances or unsuitable material shall be removed and the resulting
spaces shall be refilled with approved material. All large rocks or
boulders encountered shall be removed or broken off to a depth of
not less than six (6) inches below the finished surface of the subgrade
and the space shall be refilled. The surface of areas to be turfed
shall be finished to a smoothness suitable for the application of
turf materials.
C.
Restoring Subgrade To Acceptable Condition. If the subgrade
is disturbed in any manner after the work, described in the preceding
paragraph, has been completed, it shall be brought to an acceptable
condition by reshaping and rolling or with macadam.
D.
Determination Of Density. Testing shall be the responsibility
of the developer. Testing shall be performed by an approved commercial
testing laboratory. Tests shall be performed in sufficient number
to ensure to the satisfaction of the City that the specified density
is being obtained. Not more than ten (10) passing in-place density
tests will be required.
1.
Moisture density relations shall be determined in accordance with
ASTM D698. Copies of all density test results shall be submitted to
the City of St. Robert Public Works Department upon the completion
of each test.
E.
Protection. Settlement or washing that occurs in graded
areas prior to acceptance of the work shall be repaired and grades
re-established to the required elevations and slopes.
F.
Disposal Of Excess Excavated Materials. All excess excavated
materials shall be disposed of away from the site of the work at the
expense and responsibility of the developer. Broken concrete and other
debris resulting from pavement or sidewalk removal, excavated rock
in excess of the amount permitted to be and actually installed in
trench backfill, junk and debris encountered in excavation work and
other similar waste materials shall be disposed of away from the site
of the work.
G.
Settlement. The developer shall be responsible for all settlement
of backfill, fills and embankments that may occur within one (1) year
after final completion of the street development under which the work
was performed. The developer shall make, or cause to be made, all
repairs or replacements made necessary by settlement within thirty
(30) days after notice from the City.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Type 1 Aggregate (Rolled Stone). Aggregate for Type 1 base
shall be essentially limestone. The crushed stone shall not contain
deleterious material such as shale or disintegrated stone in excess
of fifteen percent (15%). Any silt, any clay and any deleterious material
shall be uniformly distributed throughout the mass. The aggregates
shall conform to the following gradation requirement:
B.
Type 2 Aggregate (Compacted Granular Base). Aggregate for
Type 2 base shall consist of crushed stone, limestone screening, sand
and gravel, sand, chat or sandstone or combinations of these materials,
with or without soil binder as may be required. The material shall
conform to the following gradation requirements and in addition shall
be so graded that it will readily compact to the specified density
and withstand construction traffic without distortion and displacement.
C.
If
flint chat or tiff chat is used, it shall meet the requirements of
this Section and in addition shall have at least twenty percent (20%)
passing the No. 40 sieve. Soil binder shall consist of soil or similar
fine material with such cohesive properties as to impart the desired
plasticity to the finished product.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Aggregate
base shall consist of a uniform mixture of properly graded materials
placed on a prepared subgrade as shown on the plans. The type of aggregate
used shall be as specified in the specifications. This work consists
of furnishing and placing aggregate base material in one (1) or more
courses to a depth of six (6) inches on a graded and compacted subgrade
surface in conformance with the lines, grades and thickness and cross
sections shown on the drawings and compacting the material in accordance
with this Section.
B.
Placement. Aggregate base material shall be placed and spread
uniformly on the prepared subgrade. All work on any section of the
subgrade on which the base is to be constructed shall be completed
prior to the placing of any base material on that section. Material
shall be placed so that the thickness of the course after compaction
will not exceed six (6) inches. Should the total required base course
thickness exceed six (6) inches, the material shall be placed in two
(2) or more equal lifts. Each lift shall be compacted before the next
lift is placed.
C.
Spreading, Shaping And Compacting. In no case will the developer
be permitted to place the mixture or manipulate it on muddy or frozen
subgrade. Also, any mixture containing frost or frozen particles shall
not be placed on the subgrade or compacted. After the subgrade has
been properly prepared, the mixture shall be uniformly spread by blades
or other approved equipment in successive layers of courses to such
depth that, when compacted, the base will have the minimum thickness
shown on the typical cross section.
D.
Compaction. Shaping and compacting shall be performed until
a true, even and uniform surface of proper grade, cross section and
density is obtained.
1.
Maximum density. Types 1 aggregate used for shoulders
adjacent to Portland cement concrete pavement and Type 2 aggregate
shall be compacted to not less than ninety-five percent (95%) of standard
maximum density.
E.
Testing. All testing shall be performed by the developer
as a part of his quality control program. The developer shall bare
all costs associated with the testing. Copies of all test results
shall be submitted to the City of St. Robert Public Works Department
upon the completion of each test.
1.
The Standard Compaction Test will be made in accordance with ASTM
D 698-70, Method C.
2.
Field density will be determined in accordance with ASTM D 1556-64,
Sand Cone Method.
3.
If nuclear density test methods are used, moisture content will be
determined in accordance with AASHTO T239, except that a moisture
correction factor will be determined for each aggregate in accordance
with MHTD Test Method T35.
4.
Aggregate gradation tests will be performed in accordance with ASTM
C117, C136 and D422. Services shall conform to ASTM Ell. Tests shall
be performed on each five hundred (500) cubic yards of material delivered,
but not less than one (1) test shall be made each day that material
is delivered.
F.
The
surface of the aggregate base shall be well drained at all times.
If at any time the compacted aggregate base or subgrade becomes unstable,
it shall be the developer's responsibility to restore, at his expense,
the earth subgrade and the aggregate base to the required grade, cross
section and density.
G.
The
base shall be considered complete when it has the required density
with a uniform surface of the proper grade and final template section.
Lateral ditches shall be constructed through shoulders where possible
to insure adequate surface drainage.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
This
work shall consist of treating an existing surface with bituminous
material in accordance with the project specifications and in conformity
with the lines shown on the drawings or established by the City.
B.
The
prime coat shall be cutback asphalt type RC Grade 30 and shall meet
the requirements of ASTM 2028.
C.
Weather Limitations. Bituminous material shall not be applied
when either the air temperature or the temperature of the surface
to be primed is below sixty degrees Fahrenheit (60°F) or when
weather conditions prevent the proper construction of the prime coat.
D.
This
work shall consist of all aggregate, filler if needed and asphalt
cement mixed in a stationary bituminous mixing plant in such proportions
that the resulting mixture meets the grading requirements of the job-mix
formula for the construction of arterial streets. The mixture shall
be placed, spread and compacted in conformity to a thickness of no
less than five (5) inches black base.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
A hot-mix
bituminous pavement shall be placed over a bituminous base or over
a aggregate base course in accordance with the approved project specifications.
Type C asphalt concrete shall be placed to a thickness of no less
than the minimum depth required for the classification of street to
be constructed and in accordance with the design plans and specifications
submitted to the City for approval.
B.
The
finished courses shall have the thickness shown on the plans and shall
be free from waves or irregularities and shall not vary from a ten
(10) foot straight-edge, applied parallel to the centerline, by more
than one-half (½) inch on the first (1st) or intermediate courses
and not more than one-eighth (⅛) inch on the surface course.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Curb And Gutter Concrete. Portland cement concrete shall
be placed in six (6) inch layers in curb. Concrete shall be thoroughly
consolidated by tamping and spading or with approved mechanical vibrators.
Placement of curbs and gutters by mechanical means is authorized.
B.
Concrete
curb and gutter shall consist of Portland cement concrete placed with
or without reinforcement on a prepared subgrade. The type and dimensions
shall be as shown on the construction plans. The construction of curbs
using asphaltic cement shall be strictly prohibited.
C.
Curb
and gutter shall not be less than six (6) inches thick and shall not
be less than a minimum of twenty-four (24) inches wide, including
the six (6) inch vertical curb. Contraction joints shall be installed
every ten (10) feet.
D.
Concrete
used in the construction of curb and gutter shall be Class "A" concrete,
unless otherwise specified; and all materials, proportioning, air-entraining,
mixing and transporting for Portland cement concrete shall be in accordance
with Portland cement concrete.
E.
Slump
tests will be made in accordance with ASTM Specifications C 143. Concrete
for concrete curbs and gutters shall have a slump of two (2) to four
(4) inches.
F.
The
subgrade shall be graded, compacted and rolled to insure maximum density
to the exact cross section and elevations shown on the plans. The
subgrade shall be moistened in advance of depositing concrete but
shall not be muddy or excessively wet.
G.
The
forms for this work shall be metal or wood of full depth of the concrete,
straight, free from warp and of sufficient rigidity to prevent distortion
due to the pressure of the concrete and other loads incidental to
the construction operations. The forms shall be substantial and unyielding
and shall be so designed that the finished concrete will conform to
the proper dimensions and contours. Forms shall be set and maintained
true to the line designated until the concrete is sufficiently hardened.
Forms shall be thoroughly cleaned, greased or soaped before concrete
is placed. Forms shall be joined neatly and tightly for a distance
of at least one hundred (100) feet in advance of the point of placing
concrete.
H.
Concrete
curb and gutter shall be constructed in sections having a uniform
length of ten (10) feet maximum. The length of a single section may
be reduced to a minimum of four (4) feet where necessary for closure.
Expansion joints shall be provided at intervals of ninety (90) feet.
All joints in concrete curb and gutter shall receive joint filler
in accordance with project specifications. The face and top of the
curb and gutter shall be floated smooth and the edges shall be rounded
as shown in typical section.
I.
After
the concrete has set sufficiently, the spaces back of curbs shall
be backfilled to the required elevation with suitable material that
shall be compacted in layers of not more than six (6) inches until
firm and solid.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Sidewalk And Entrance Concrete. Concrete sidewalks shall
be constructed to the line, grade and dimensions shown on the plans
and specifications. Unless otherwise specifically designated, concrete
sidewalks shall be at least five (5) feet wide and have a cross slope
of no more than two percent (2%) or one-fourth (¼) inch to
the foot. Sidewalks shall be not less than four (4) inches in thickness
and shall be placed on well-compacted subgrade. Driveways or other
points designated on the plans, the depth shall be increased to six
(6) inches.
B.
Handicap
accessible ramps shall be not less than thirty-six (36) inches wide
and shall not have a slope greater than one (1) inch rise per twelve
(12) inches length (1:12).
C.
In
instances where surrounding buildings or other restrictions make it
impossible to conform with the aforementioned slope requirements,
then the handicap accessible ramp shall contain a slope with as shallow
a rise as possible under the circumstances not to exceed ten percent
(10%). All handicap accessible ramps shall be constructed with a gradual
rounding at the bottom of the slope.
D.
Concrete
sidewalks shall be constructed on a prepared smooth subgrade of uniform
density. Large boulders and ledge rock found in the subgrade shall
be removed to a minimum depth of six (6) inches below the finished
subgrade elevation and the space shall be backfilled with suitable
material that shall be thoroughly compacted.
E.
Dummy
joints, spaced approximately at five (5) feet intervals, shall be
provided for the full width (and length for wider sidewalks) to a
depth of one (1) to two (2) inches.
F.
Pre-molded
expansion joint material, one-half (½) inch thick, shall be
installed in the sidewalk for its full depth wherever it meets another
sidewalk, driveway, building, curb, lighting standard, fireplug or
other rigid object. Expansion joints shall be placed on all four (4)
sides of the square formed by the intersection of two (2) sidewalks.
When the sidewalk fills the space between the curb and a building
or wall, an expansion joint shall be placed between the sidewalk and
the curb and between the sidewalk and the building or wall.
G.
After
the concrete has been brought true to line and grade, it shall be
finished to a medium rough finish by use of a stiff broom or other
approved method to produce an even, gritty texture. All edges shall
be rounded with an edging tool to one-fourth (¼) inch radius.
H.
Concrete
for concrete sidewalks shall have a slump of two (2) to four (4) inches.
[Ord. No. 1711 §§1 —
3, 9-13-2004]
A.
Where
called for on the plans, non-reinforced concrete driveway pavement
shall be constructed to the line, grade and dimensions shown on plans.
B.
The
minimum driveway width for residential applications shall not be less
than nine (9) feet in width. Each residential lot shall be limited
to the construction of one (1) driveway entrance per property.
C.
The
minimum driveway width for non-residential one-way enter/exit shall
not be less than twelve (12) feet in width and shall not be less than
twenty-four (24) feet in width for non-residential two-way enter/exit.
D.
The
maximum slope of any driveway shall not exceed twenty percent (20%).
[Ord. No. 2725 §§1 —
2, 10-20-2014]
A.
All traffic control signs, signals and devices shall conform to the
manual and specifications approved by the State Highways and Transportation
Commission or resolution adopted by the Board of Aldermen of the City
of Saint Robert.
1.
Street name signs shall be purchased from the City and installed
by the developer.
2.
Stop signs, poles and hardware shall be provided by the City
at no charge and installed by the developer.
3.
All signs shall be post mounted with a two and three-eighths
inch (2 3/8) outside diameter twelve (12) feet in length galvanized
post and mounting hardware.
4.
All signs shall be placed with a lateral offset of at least
one (1) foot from the face of the curb and shall face on-coming traffic
in lane adjacent to sign placement.
5.
Stop signs shall have a seven (7) foot minimum clearance between
finished grade and bottom of sign with the street name signs being
mounted directly above.
6.
Developer shall coordinate final sign location with the Public
Works Department.
