[Ord. 2003-0-2, --/--/2003, § 101-83]
Municipal, federal, and state specifications and standards will
govern in any situation not covered in the contract documents.
[Ord. 2003-0-2, --/--/2003, § 101-84]
1. The contractor shall provide and maintain access to and from all
properties along the line of the work. He shall also provide temporary
by-passes and bridges and maintain them in a safe and usable condition
whenever, in the opinion of the Engineer, detouring of traffic to
parallel routes cannot be done without hardship or excessive increase
in travel by the public.
2. Where single lane by-passes are provided, the contractor shall furnish
signal men to control traffic operations and minimize delays.
3. Where directed by the Township/Authority Engineer, the contractor
shall perform excavating, paving and other operations on one-half
of the road at a time to allow for movement of traffic.
[Ord. 2003-0-2, --/--/2003, § 101-85]
The contractor shall set up and maintain all necessary detours
to the satisfaction of the Engineer and PennDOT. He shall supply and
erect all necessary signs along the routes approved by the Engineer
and PennDOT. He shall notify police, fire, school, and East Fallowfield
Township officials, as well as adjacent municipalities. All proposed
detours shall be marked clearly on a map and submitted to the Engineer
two weeks in advance of the time the detour will go into effect. The
Engineer will submit the plans to PennDOT for approval.
[Ord. 2003-0-2, --/--/2003, § 101-86]
1. The contractor shall provide, erect, and maintain adequate barricades,
warning signs and lights at all excavations, closures, detours, and
points of danger.
2. Dust Control. It will be the responsibility of the contractor to
control dust during the project by sweeping and/or the proper use
of chemicals such as calcium chloride.
3. Maintenance of Public Ways. Streets, cross walks, and sidewalks shall
be kept broom clean, clear, and free for the passage of vehicles or
pedestrians, unless otherwise authorized by the Engineer. Additional
passageways may be required where deemed necessary.
4. All applicable regulations of the Occupational Safety and Health
Act (OSHA) shall be complied with during the performance of the contract,
including the provisions on confined space entry. Safety provisions
shall be enforced by OSHA as required by law and not by the Township/Authority
its representatives.
5. The safety provisions of applicable laws and regulations of the Pennsylvania
Department of Labor and Industry, and building and construction codes
shall be observed. Machinery, equipment, and other hazards shall be
guarded in accordance with safety provisions of the "Manual of Accident
Prevention in Construction," published by the Associated General Contractors
of America, to the extent that such provisions are not in contradiction
of applicable state and local laws.
6. Special attention is drawn to the regulations of the Pennsylvania
Department of Labor and Industry relating to trenches and excavations,
tunnel construction, equipment, materials, labor, safety sanitation,
and other regulations of which the contractor shall be fully informed
and he shall fully comply. Observance of and compliance with said
regulations shall be solely, and without qualification, the responsibility
of the contractor, without reliance on supervision or direction by
the Township/Authority or Engineer.
[Ord. 2003-0-2, --/--/2003, § 101-87]
1. The contractor shall forward to the Engineer a certification for
each material used on the site. This certification shall state the
materials used on the site conform with the specifications set forth
herein and shall be signed by the person having responsible charge
of the plant or company producing such materials.
2. All material used in sewer construction not herein before specified,
or specified on the plans, shall conform to the material specifications
of the ASTM for that material.
[Ord. 2003-0-2, --/--/2003, § 101-88]
1. Duly authorized inspectors, performing their duties tinder the direction
of the Engineer, may be assigned to all or any part of the work. They
shall be authorized to inspect the result of work and materials furnished.
If any dispute arises as to the materials furnished, or the acceptability
of the final work, they shall have the authority to reject materials
and/or work until the issue can be decided by the Engineer. All fees
incurred by the inspectors and Engineer are paid by the contractor
to the Township/Authority.
2. The contractor shall furnish the inspector with records, as required,
of the materials delivered or materials incorporated in the work.
3. All pipe laying, concrete pouring, and masonry construction shall
be done only in the presence of an inspector representing the Engineer
unless specifically waived by the Engineer.
[Ord. 2003-0-2, --/--/2003, § 101-89]
1. The contractor shall schedule and conduct his operations to minimize
erosion of soils and prevent silting and muddying of streams, rivers,
irrigation systems, and impoundment.
2. Pollutants, such as fuels, lubricants, bitumen, raw sewage, and other
harmful materials shall not be discharged into or near rivers, streams
and impoundment or into natural or man-made channels leading thereto.
Wash water or waste from concrete mixing operations shall not be allowed
to enter live streams.
3. All applicable regulations of fish and wildlife agencies and statutes
relating to the prevention and abatement of pollution shall be complied
with in the performance of the contract.
4. All waterways shall be cleared as soon as practicable of false work,
piling, debris, or other obstructions installed during construction
operations and not a part of the finished work.
5. Frequent fording of live streams will not be permitted.
6. When it becomes necessary, the Engineer will inform the contractor
of unsatisfactory construction procedures and operations. If the unsatisfactory
construction procedures and operations are not corrected promptly,
the Township/Authority may suspend the performance of other construction
until the conditions have been corrected.
7. All provisions of the erosion control plan for this project shall
be followed. Erosion and sedimentation control practices shall be
carried out in strict accordance with the construction drawings and
the erosion and sediment control program narrative report. In the
event no narrative report has been established, and notes concerning
same are not specifically addressed on the construction drawings guidelines,
the mitigation of erosion and sediment collection shall be carried
out in accordance with the guidelines of "Soil Erosion and Sedimentation
Control Manual" prepared by the Pennsylvania Department of Environmental
Protection, dated April 1991, as amended. Also, any measures undertaken
must meet the current practices of the Chester County Conservation
District and are subject to the approval of the Engineer.
8. The contractor must acquire a grading permit if applicable and conform
to all the regulations set forth in East Fallowfield Township ordinances.
9. The contractor shall also conform to the following erosion and sedimentation
control practices:
A. Reduce by the greatest extent practicable the area and duration of
exposure of readily erodible soils.
B. Protect the soils by use of temporary vegetation, seeding, and mulch,
or by accelerating the establishment of permanent vegetation. Complete
and protect segments of work as rapidly as is consistent with construction
schedules.
C. Retard the rate of runoff from the construction site and control
disposal of runoff.
D. Trap sediment resulting from construction in temporary or permanent
silt holding basins. This includes pump discharges resulting from
de-watering operations.
E. Sprinkle or apply dust suppressors or otherwise keep dust within
tolerable limits on haul roads and at the site.
F. Use temporary bridges or culverts where fording of streams is objectionable.
Borrow areas should be at a location where pollution from the operation
can be minimized. Locations should be avoided where pollution would
be inevitable.
G. Should construction operations be suspended for any appreciable length
of time, temporary measures for the control of erosion must be utilized.
H. Provision be made for protection against discharge of pollutants
such as chemicals, fuel, lubricants, sewage, etc., into the stream.
I. All operations shall be conducted in such a manner to minimize turbidity
in the stream at and below the site of the structure.
J. The contractor shall, at all times, keep the premises free from accumulation
of waste material or rubbish caused by his employees or work.
[Ord. 2003-0-2, --/--/2003, § 101-90]
1. General.
A. The contractor shall furnish all labor, tools, materials, and equipment
necessary to accomplish all work including, but not limited to: the
clearing and grubbing of areas of work; removal of existing paving;
excavation of trenches to the depth shown on plans; support of all
utility lines where the proposed sewer line crosses; and the maintenance
of all excavated areas and trenches. This includes: sheeting; shoring;
the removal of all water; and the disposal of excess fill. Also, it
includes incidental work necessary to complete the project in a first
class workmanlike manner as shown on the drawings and/or as specified
and directed by the Township/Authority.
B. Excavation shall include all materials regardless of character, excluding
rock excavation as herein defined. Excavation shall be an open cut,
unless written permission is granted by the Township/Authority to
excavate by other methods or other methods are specified on the construction
drawings. The Township/Authority shall be empowered to require that
hard excavation be employed by the contractor where deemed necessary
for proper construction.
C. All openings to be made within a state highway shall be made in accordance
with the most recent standards and specifications prescribed by PennDOT,
including any provisions established as conditions of approval for
a PennDOT highway occupancy permit.
D. All openings to be made in Township roads shall be made in accordance
with the permit and regulations issued by East Fallowfield Township.
E. Before beginning road trenching, the contractor shall clear the work
site by removing all underbrush or any other obstructions to the work.
See paragraph .G concerning tree removal.
F. In general, road trenches may be excavated and backfilled either
by machinery or by hand; provided, however, the contractor shall use
hand excavation where necessary to protect existing structures, utilities,
and private or public properties; and, provided further, that backfilling
shall be done by hand to the extent hereinafter specified.
G. If construction is on a right of way other than in a road or street,
no cutting, removal of trees, or cutting of main tree roots may be
done unless permission has been obtained from the Township/Authority.
All work must be done in such a manner that the damage to the trees
and other plantings is kept to a minimum. Any damage to trees, such
as nicks, gouges, or broken limbs, shall be trimmed and painted with
tree wound paint. Any tree damaged beyond repair shall be replaced
at no cost to the Township/Authority and/or owner of the property.
Maximum diameter of trees used for replacement shall be four inches.
The above restrictions also apply to trees or plants adjacent to a
street, road, or highway right of way.
[Ord. 2003-0-2, --/--/2003, § 101-91]
1. Lengths of Trenches. The Township/Authority Engineer shall have the
right to limit the length of trench to be left opened in advance of
work. The Township/Authority may at anytime be empowered to require
the contractor to backfill open trenches where pipe has yet to be
laid if such trench is being left opened for an unreasonable period
of time and/or only overnight, if it is deemed necessary to be in
the best interest of the health, safety, and welfare of the public.
Such backfilling shall be performed by the contractor even if the
contractor must stop other work to backfill. The contractor shall
not again open said trench until he is prepared to complete the operation.
If the contractor refuses to backfill, the Township/Authority shall
be authorized to do so and expenditures for said work shall be the
sole responsibility of the contractor. Excavation of all trenches,
unless otherwise authorized, shall not exceed 20 feet in advance of
pipe laying.
2. Width and Depth of Trenches.
A. The trenches shall be at a width and depth shown on the construction
drawings, and specified or as directed by the Engineer in order to
provide for the intended grade. Sides of trenches shall be kept as
vertical as possible. The width of trench shall be taken as the nominal
diameter of the pipe at the bell plus an additional one foot on either
side. Where sheeting is used this trench width shall be taken as the
measured distance between interior faces of sheeting. In no case shall
stringers and walling strips be placed in such a way as to interfere
with the proper compaction of earth or granular material around the
pipe.
B. Where the proposed foundation for the pipe, as determined by the
Engineer, is to be situated on a suitable earth material for bedding
purposes, the contractor shall excavate the trench along the grade
to receive the pipe with the bottom around the bell being excavated
in such a way as to insure the pipes bedding throughout the pipe's
length and to provide room for properly making the joint connections.
This may be done without the use of a granular or coarse aggregate
foundation, except that when PVC pipe is being used a six-inch minimum
coarse aggregate foundation shall be provided for its entire length.
C. Where trenches have been excavated below proper grade (over excavated)
the contractor shall be required to bring the bedding to its proper
grade by the use of a coarse aggregate foundation unless other suitable
material is found to be acceptable by the Engineer. Trenches that
have been over-excavated and subsequently filled to proper grade with
suitable material shall be properly and thoroughly compacted prior
to pipe installation. The adequacy of the tamped trench to receive
the pipe will be determined by the Engineer.
3. Relocation of Guide and Alignment of Trenches. The Township/Authority
reserves the right to change the alignment and grade of the proposed
pipe installation as shown on the construction drawings. These changes
may be due to the presence of obstructions or other conditions making
the realignment and/or grade adjustment necessary, more desirable,
or advantageous to the Township/Authority. Such changes will not entitle
the contractor to additional compensation over the agreed cost for
installation. Also, the contractor shall not be entitled to claim
damages from the Township/Authority as a result of these changes,
even if these changes require the contractor to abandon trenches already
excavated. These excavated trenches, however, shall be backfilled
at the contractor's expense.
4. Trench Foundation Preparation. Irregularities and cavities occurring
in earth or rock excavation, at trench bottoms or tunnels, shall be
filled to the required elevation with clean earth, or other approved
material and firmly compacted before the installation of pipe lines.
It should be noted, however, that if in the opinion of the Engineer,
the proper grade for pipe installation has been encountered and the
soil condition composed of unsuitable foundation material, the bottom
of the trench shall be excavated to an additional depth. This additional
depth shall be filled with gravel and/or crushed aggregate placed
and properly compacted to the proposed grade as directed by the Engineer.
5. Clearing, Grubbing, and Storage of Materials.
A. The contractor shall clear and grub the surface over the proposed
trench line in accordance to § 200 of the most recent revisions
of the PennDOT specifications. Curbs, sidewalks, gutters, flagstones,
and paving material removed from trenches shall be stored at locations
designated by the Engineer. Any curbs, sidewalks, gutters, flagstones,
paving material, or suitable trench backfill that become damaged or
lost through the careless removal, wasteful storage, neglect, disposal,
or use shall be the responsibility of the contractor.
B. The contractor shall be responsible for permanently restoring, repaving,
and replacing an and all areas disturbed as a result of excavating
trenches for a greater width than is necessary, excavation outside
the limits or work, or disturbing areas through negligence.
6. Trenching Machines. Trenching machines may be used, but the contractor
will be held responsible for all damages to private property, state,
federal, or municipal highways, or any overhead or underground structures.
[Ord. 2003-0-2, --/--/2003, § 101-92]
1. Backfilling shall be done as promptly as is consistent with non-injury
to the pipe joints, but no backfilling shall be done before the Engineer
gives permission.
2. Backfilling shall be done in layers of six inches in depth and each
layer shall be thoroughly tamped by a vibrating compactor to optimum
density. For a depth of not less than two feet above the top of the
pipe, fine earth or sand, free from stones, shall be placed by hand.
Tamping at joints shall be done by hand and with great care, so joints
will not be injured.
3. Backfill materials consisting of 2B aggregate shall be placed around
the pipe. Sufficient material shall be worked under the haunch of
the pipe to provide adequate side support. Caution shall be taken
to prevent movement of the pipe during placing of the material under
the pipe haunch. The depth of the initial backfill shall be to no
less than four inches above the top of the pipe. Compaction shall
be done carefully to prevent crushing or distorting the pipe.
4. The remainder of backfill material shall be placed, moistened if
necessary, and compacted with gasoline driven compactor in suitable
layers according to equipment used.
5. Where specified by the Engineer and in all state highways, trenches
shall be backfilled with PennDOT specification 2 RC material which
conforms to § 703, Publication 408, of the Department. Material
shall be placed in suitable layers and compacted to optimum density.
Trenches shall be backfilled with this material from a point 12 inches
above the top of the barrel of the pipe to the bottom of the paving
section to be installed. Compacting of backfill in state highways
by puddling or jetting will not be permitted.
6. The contractor is advised the use of unsuitable material for backfill
of trenches will not be permitted, and borrow material will be required
to provide stability and safe conditions for loading on the sewer
pipes.
7. The best of materials excavated shall be used in backfilling in a
manner approved by the Engineer. Frozen material shall not be used
for backfilling. Selected earth, sand, or gravel shall be provided
in rock trenches and used as backfill in the manner herein described,
to a height of two feet above the top of the sewer. The balance of
the backfill for the trench shall be, in all cases, good earth, sand,
or gravel containing stones not exceeding six inches in dimension,
but not exceeding 20% by proportion of backfill volume.
8. Backfilling or tamping with trenching machines is prohibited.
9. Upon completion of backfilling, the streets or property shall be
cleaned, surplus material removed, and the surface restored to the
condition in which it was before ground was broken. All materials
left in public highways shall become the property of the contractor,
and shall promptly be removed by same.
10. Where traffic conditions warrant, or work is to be stopped for an
extended period, the entire trench shall be backfilled to permit traffic
to pass. Backfilling of the entire trench will not be required for
an overnight work stoppage except in isolated instances for safety.
11. Irrespective of location of sewer construction, within public or
private rights-of-way, backfilling shall be accomplished with an equal
degree of compaction as specified above.
12. The contractor shall backfill all excavations as rapidly as practicable,
following the inspection and approval of work by the Township/Authority.
13. No part of a pipe line or other structure needing tested, located,
or measured, shall be filled until required tests and measurements
have been made by the Township/Authority. Only then will permission
be given to backfill. Any backfilling done without authorization shall
be uncovered by the contractor.
14. No ashes, putrescible refuse, large stones, or other material of
an unsatisfactory character shall be used in backfilling. All suitable
excess material from trenches and other excavations on the contract
shall be used for backfill.
15. In the event additional material is needed, the contractor shall
obtain borrow material from approved sources. All borrowed material
shall be of satisfactory quality for the required purposes. In certain
locations, grading and filling of adjacent ground may be required
by the Township/Authority.
16. The space between pipe and sides of trench shall be backfilled by
hand and thoroughly tamped with a light tamper in layers not to exceed
four inches in thickness to a depth of at least one foot above top
of pipe.
17. After completion of backfill, all material not used therein, shall
be removed and disposed of by the contractor in such a manner and
designation approved by the Township/Authority. All roads, sidewalks,
and other places on line of work shall be left free, clean, and in
good order.
18. All removal and cleaning-up shall be the responsibility of the contractor.
If he fails to do such work after receipt of notice, the work can
be performed by the Township/Authority and the cost charged to the
contractor.
19. The contractor shall maintain all backfilled excavations in proper
conditions as specified. All depressions appearing in backfilling
excavations shall be promptly repaired. If he fails to make repair
within 48 hours after receipt of written notice from the Township/Authority,
the same may backfill said depression and charge its cost to the contractor.
In an emergency, the Township/Authority may take action on any dangerous
depression without giving previous notice to the contractor and charge
the cost to the contractor.
20. The contractor shall be required to compact all backfill materials
to a minimum of 95% of the materials maximum dry density as determined
by ASTM D-698-64T (Standard Proctor).
21. During or after backfill operations, the Township/Authority may order
the contractor to take soil compaction tests in conformance with ASTM
Standard Procedures or other available methods. If determined by the
Authority that any lift does not meet 95% of the maximum dry density,
the contractor shall be required to dig test holes, as directed by
the Township/Authority at various levels, throughout the backfill,
at the contractors expense, for additional testing. If the additional
tests indicate unsatisfactory compaction the contractor shall remove
all unsatisfactory backfill and re-compact same to the required standards
at their expense.
[Ord. 2003-0-2, --/--/2003, § 101-93; as amended
by Ord. 2010-01, 3/23/2010]
1. Temporary paving on East Fallowfield Township roads shall consist
of two inches of cold patch. On state roads, temporary paving shall
conform to PennDOT Form M948 B which states, temporary restoration
shall consist of a minimum of eight-inch stone base with a coat of
two-inch bituminous material, and shall be kept in place a minimum
of 90 days. Temporary paving on trenches in state and Township roads
shall be maintained by the contractor until final paving is installed.
The top surface of the temporary paving shall be flush with the surface
of the existing paving. Any special conditions contained in the PennDOT
permit for the project will take precedence.
2. Where the sewer is installed along or across a road shoulder, the
top 18 inches will be 2RC material which shall be laid and compacted
as part of the trench backfill. This restoration shall extend a minimum
of 12 inches on either side of the trench. If the length of trench
exceeds 50 feet, the shoulder must be shot with 30 gallons per square
yard of RT-6C bituminous material. In the event of settlement, more
stone will be added to bring the ditch to the level of the surrounding
shoulder.
3. The contractor shall be responsible for the maintenance of all ditches.
In the event of settlement outside of paved areas, he shall promptly
fill the ditch. In the event of settlement within paved areas, the
contractor shall promptly fill the ditch to the level of the paved
surface with temporary paving.
4. The contractor shall have men available on weekends and holidays
in the event that any temporary paving settles sufficiently to make
travel on the roads hazardous. The contractor will be required to
continuously maintain all temporary paving, without compensation,
until it is replaced by the permanent paving. All unpaved areas or
streets shall be regraded as soon as trenches are backfilled.
[Ord. 2003-0-2, --/--/2003, § 101-94]
1. Excavated Material. Excavated material shall be so placed as not
to unreasonably interfere with travel on the streets and driveways
by the occupants of adjoining property or with access to fire hydrants.
Surface loam, sod, etc., shall be kept separate from the remainder
of the excavated material and replaced in its original position after
backfilling of the trench. All surplus excavation not disposed of
as stated above, shall be removed from the site of the work by the
contractor, but none shall be deposited on private property, unless
written consent of the owner(s) has been filed with the Engineer.
In business districts, important thoroughfares, narrow streets, or
in limited working areas, material excavated from trenches may be
required to be removed from the street, as soon as excavated, to temporary
storage areas or used as backfill within the trench excavation. When
it is necessary to haul soft or wet materials over the streets, the
contractor shall provide suitable tight vehicles to prevent spillage.
2. Removal of Water from Excavation. The contractor is responsible for
keeping all excavations free of water during the construction process
at their sole expense. The contractor shall at all times have ample
equipment and means available on site by which they may de-water the
excavated areas or trenches. The equipment and means shall include,
but are not limited to, pumps, power source, labor, and other tools.
Well points are an acceptable means by which de-watering may be propagated
and shall be utilized wherever necessary in order to maintain thy
conditions. Any methods proposed by the contractor as a means to de-water
excavated areas are subject to the approval of the Engineer.
3. Condition of Excavation.
A. The contractor shall be solely responsible for the condition of all
his/her excavations including the maintenance thereof. Any slides
or cave-ins shall be promptly removed.
B. Regardless of whether or not the use of bracing or sheeting and shoring
has been mandated by the Township/Authority, the contractor shall
be solely responsible for the condition of the excavations. Failure
of the Township/Authority to give direction concerning the size of
timer sections, sheet piling, and/or the methods of placement of piling,
sheeting, bracing, and shoring shall not relieve the contractor of
any responsibility for the condition of the excavation. Any delay
requiring an excavation to be open longer than usual shall not relieve
the contractor from his obligation to properly and adequately protect
the excavation from slides, cave-ins, or slipping.
4. Test pits, ordered in advance by the Township/Authority, shall be
made by the contractor along the line and site of work in order to
determine the composition of subsurface materials and/or the exact
location of utility lines.
5. Miscellaneous Excavation. The contractor shall do any excavating
work as may be necessary as directed by the Township/Authority. All
such excavation shall be subject to the same conditions and requirements
specified for trench excavation.
[Ord. 2003-0-2, --/--/2003, § 101-95]
1. Rock shall be considered any material which requires drilling, blasting,
wedging, or any means over and above direct removal by large power
shovel and/or simple hard tools.
2. Where blasting is necessary, and only after receiving a permit, it
shall be performed by an experienced and licensed blaster. All blasts
shall be carried out in strict accordance with the laws and regulations
of the state, county, and federal agencies. No storage of explosives
is permitted in East Fallowfield Township.
[Ord. 2003-0-2, --/--/2003, § 101-96]
1. Only when permission is granted by the Township/Authority shall tunneling
operations be used as a method for pipe installation.
2. If tunneling operations are approved, sufficient openings shall be
provided for the joining of pipe sections, placement of sleeves, and
proper backfilling and compaction around the pipe or pipe structure.
Tunnels shall use timber or steel sheeting and shall be constructed
only by approved methods of the Township/Authority.
[Ord. 2003-0-2, --/--/2003, § 101-97]
1. General. The contractor shall support the sides and ends of all excavation
wherever necessary with braces, sheeting, shores, or stringers of
the quality and character hereinafter specified. All timbering, under
pinning, or sheet piling shall be put in place by men skilled in such
work and shall be arranged allowing it to be withdrawn, as back-filling
proceeds, without injury to the structure or property. If, in the
opinion of the Engineer, the timbering material is not of proper quality
or sufficient size, or not properly placed, the contractor shall,
upon notice, procure and place said timbering in a satisfactory manner.
If contractor fails to do so, the work may be ordered stopped until
the contractor is in compliance.
2. Materials. All timber used for sheeting, bracing, shoring, forming,
or in foundations, shall be of approved quality and required dimension.
Except where allowable for temporary work, it shall be sound, straight,
and free from cracks, shakes, and large or loose knots. Where conditions
require it, sheeting shall be tongued and grooved, grooved and splined,
or steel sheet piling.
3. Sheeting Left in Place.
A. All timbering shall be withdrawn as the backfilling is being done
except where, and to such extent as the Engineer shall order, in writing,
that said timbering be left in place. The contractor shall cut off
any sheeting, wherever ordered, and shall remove the material without
compensation. However, said sheeting shall be cut off at least 12
inches below finished grade.
B. Wherever necessary in quick sand, soft ground, or for the protection
of any structure or property, sheeting shall be driven, at the contractor's
expense, to such a depth below the bottom of the trench required by
the Engineer.
[Ord. 2003-0-2, --/--/2003, § 101-98]
1. Every precaution must be taken to obtain water tight construction
of all joints in pipe. The same precautions must be taken for all
connections with manholes and "Y" or "T" branches, extensions of laterals,
and construction of drop connections.
2. All ground water, from any cause whatsoever, shall be pumped or bailed
out so that the trench shall be dry during pipe laying and backfilling.
3. All water pumped from the trenches shall be disposed of in a manner
satisfactory to the Engineer.
4. When standard de-watering methods cannot maintain proper dry trench
conditions, the contractor shall lower the water table below the trench
bottom by well points and pumping, and provide pumps of sufficient
capacity for de-watering excavations.
[Ord. 2003-0-2, --/--/2003, § 101-99]
1. Manholes and sewer mains shall be constructed and completed in sequence
with service connections being constructed.
2. Temporary paving in public roads shall be placed immediately after
completion of trench backfill, and permanent paving shall be placed
in accordance with state, federal, and local regulations. All street
surfaces shall be cleaned.
3. Failure of the contractor to comply with these requirements shall
be sufficient reason for the Township/Authority to stop all other
work, pending compliance with these requirements.
[Ord. 2003-0-2, --/--/2003, § 101-100]
1. General.
A. After the trench has been brought to the specified grade, the pipe
and specials shall be laid. All pipe shall be laid with the bell or
couplings upgrade. Pipe laying shall be done only in presence of an
inspector and the contractor shall give ample notice to the Engineer
before laying pipe, so an inspection can be performed. All pipe, before
being lowered into the trench, shall be inspected and both ends shall
be cleaned. The contractor shall not have more than 20 feet of trench
open at any one time.
B. Pipes shall be thoroughly cleaned before they are laid and shall
be kept clean until acceptance of completed work. Open ends shall
be provided with a stopper carefully fitted so as to keep dirt and
other substances from entering the main. A stopper shall be kept in
the end of the line when work is not in progress.
C. Pipe shall be laid so the interior bore will conform accurately to
the grades and alignment indicated by the construction drawings or
as directed by the Engineer.
D. Before joints are made, each pipe shall be well bedded and no pipe
shall be brought into position until the preceding length has been
thoroughly secured in place. Coupling or bell holes shall be dug sufficiently
large to insure a proper joint. All joints shall be made in strict
conformance with the manufacturer's recommendation.
E. The excavation shall be kept free from water and no joints shall
be made under water. Water shall not be allowed to rise in an excavation
until joint is complete. Care shall be used to secure water tightness
and to prevent damage to joints during backfilling. All pipe joints
shall be watertight within the established specifications.
F. No pipe shall be placed upon a foundation into which frost has penetrated,
or at any time when the Township/Authority shall deem there is a danger
of the formation of ice or penetration of frost at the bottom of excavation.
Where the foundation is unstable or consists or rock, a stone or gravel
foundation shall be placed and tamped to form an acceptable bed for
the pipe at the depths and locations directed by the Engineer.
G. The lateral pipe shall be installed in a trench separate from any
water service and the line shall have a minimum horizontal separation
of 10 feet. The pipe shall be of cast iron or PVC SDR-35 where it
connects to the main and laid on a grade of 1/4 inch per foot. In
special cases 1/8 inch per foot will be allowed.
H. Only in special circumstances, as determined by the Engineer, may
the lateral be installed in the same trench as the water service.
If permitted, in writing, the two lines shall be separated by a bench
of undisturbed earth. Water and sewer lines shall have a horizontal
separation of no less than three feet. The top of the sewer shall
be at least 18 inches below the invert of the water main. The sewer
pipe material shall be cast iron or PVC SDR-35 at the point of connection
and shall be installed with approved joints being water-tight and
root proof.
I. If conditions prevent the above vertical separation, or when the
water service must cross beneath a lateral, the bottom of the lateral
shall be at least 18 inches above the top of the water service line
and the lateral shall be of cast iron pressure pipe with push-on or
mechanical joints, at least 10 feet on either side of the crossing.
J. When a lateral is installed on filled or unstable ground, it shall
be push-on or mechanical joint cast iron pressure pipe.
2. Line and Grade.
A. Care shall be taken to lay the pipe to true lines and grades as given
by the contractor's engineer or as mandated by the Township/Authority.
All pipe shall be laid, to line and grade, using the laser beam method,
or the double string method. Laser beam equipment shall be of the
type that shines a beam through the pipe so that the grade and line
may be checked easily. Correctness of the laser beam setting shall
be verified at each manhole and in the middle of each run of pipe.
B. The grade, as shown on the profile, is the inside bottom of the pipe
and to which the work must conform. All pipe shall be laid true to
line and grade with bells, or couplings, on up grade. Under no conditions
shall pipe be laid in water or on subgrade containing frost, or when
trench conditions are unsuitable for such work. The contractor's
engineer will set all stakes for lines and grades. The contractor
must maintain and keep the stakes uncovered so they can be examined
at any time. Stakes shall be placed at a minimum of every 50 feet,
and the contractor shall be required to check the line and grade in
order to insure accuracy. Lesser intervals shall be used only if permitted
by the Township/Authority Engineer.
3. Pipe Bedding.
A. In all trenches, whether earth or rock, special bedding shall be
provided for all pipe foundation All pipe shall be laid with a smooth,
uniform invert.
B. All pipe barrels and bells shall be bedded uniformly on special bedding.
This bedding shall consist of 2B (#57) stone which conforms to § 7.03.2,
Publication 408 of PennDOT, including late revisions, extending a
minimum of six inches over the top of the pipe.
C. For pipe in wet areas a minimum of six inches of 2B (#57) stone which
conforms to § 7.03.2, Publication 408 of PennDOT, shall
be required for bedding under the pipe. "Clay dams" made with clay
soil, may be required to prevent constant water flow through the under
drain. These dams shall be a minimum of two feet thick and shall fill
the entire trench cross-section to a point a maximum of two feet above
the top of the pipe.
D. Depth of this special bedding shall be such that no water will reach
the bottom of the pipe until backfilling is completed.
4. Pipe Mouth Stoppered. During construction, the mouth of the completed
sewer shall always be kept properly closed when pipe laying is not
actually in progress An expanding rubber plug is used to prevent the
entrance of any water, earth, stones, or other debris. Employees shall
not walk on, over, or otherwise disturb the finished lines. The contractor
shall take any and all other measures to keep the sewer clean and
free from deposits and protect the lines from injury until final inspection
and acceptance by the Township/Authority Engineer.
5. Damage to Sewer. If the sewer is damaged from any cause, or becomes
either partly or completely filled with dirt, stones, sand, or other
debris, the contractor shall make all necessary repairs and remove
such material to the satisfaction of the Engineer.
6. Recommendations of Pipe Manufacture. Recommendations of manufacturer
must be followed in laying pipe with special joints.
7. Laterals and Fittings.
A. As shown on the plans, or as directed by the Engineer, the contractor
shall lay four-inch to six-inch PVC pipe to the road right-of-way
line. If utilities run parallel to the road, laterals shall be extended
at least 24 inches beyond the utility. The contractor shall make the
connections to the sewer by means of wye or tee branch fittings. Cast
iron saddles may be used with the permission of the Engineer and installed
per the instruction of the pipe or saddle manufacturer. In private
rights-of-way, pipe will be installed to the edge of the right-of-way.
B. The lateral pipe shall be property capped with a cap made especially
for the size and type of pipe in use, and shall be properly blocked
to permit air testing. All laterals shall be physically marked by
a two-inch by four-inch board extending plumb from the capped end
of the lateral to 18 inches above the ground surface. The two by four
shall be painted red on top. Tunneling shall be used only with the
Engineer's permission, and the lateral shall be marked with an
eighteen-inch metal rod driven directly over the capped end. The capped
end shall be blocked securely to prevent the cap from blowing off
during the air testing. Upon completion of the work the contractor
shall supply the Township/Authority with an as built plan showing
the location and depth of all lateral stubs.
C. All laterals shall be laid on a minimum 1/4 inch per foot grade unless
approved, in writing, by the Engineer.
8. Concrete Cradle.
A. Where directed by the Engineer or as shown on the plans, the contractor
shall carry the excavation six inches deeper than the bottom of the
pipe bell, and lay the pipe in 3,000 pound mix high, early strength,
concrete. Care shall be taken in laying the pipe in the concrete so
as to secure an even bearing.
B. Concrete cradle shall be considered a 3,000 pound mix high, early
strength, concrete of a minimum thickness of six inches placed around
the lower two-thirds of the pipe. See detail drawing.
C. All concrete in this section shall be certified, central plant mix.
9. Concrete Encasement.
A. Where directed by the Engineer, or as shown on the plans, the contractor
shall carry the excavation six inches deeper than the bottom of the
pipe bell, and lay the pipe in 3,000 pound mix high, early strength,
concrete. Care shall be taken in laying the pipe in the concrete so
as to secure an even bearing.
B. Pipe encased in concrete shall be considered as encased entirely
in 3,000 pound mix high, early strength, concrete of a minimum thickness
of six inches. See detail drawing.
C. All concrete in this section shall be certified central plant mix.
10. Infiltration. The contractor shall clean all debris from pipes and
repair all apparent leakage. After which, the infiltration of water
from any manhole to manhole section of the contract shall not exceed
100 gallons per inch of inside pipe diameter per mile of sewer per
24 hours where ground water is encountered above the sewer line.
11. Air Testing.
A. In addition to infiltration testing, the Township/Authority will
require the performance of line acceptance testing using low pressure
air. The test shall be performed at the expense and with the full
cooperation of the contractor. It shall be performed according to
stated procedures and in the presence of the Township/Authority Engineer.
B. Equipment used shall meet the following minimum requirements:
(1)
Pneumatic plugs shall have a sealing length equal to or greater
than the diameter of the pipe to be inspected.
(2)
Pneumatic plugs shall resist internal test pressures without
requiring external bracing or blocking.
(3)
All air used shall pass through a single control panel.
(4)
Three individual hoses shall be used for the following corrections:
(a)
From control panel to pneumatic plugs for inflation.
(b)
From control panel to sealed line for introducing the low pressure
air.
(c)
From sealed line to control panel for continually monitoring
the air pressure rise in the sealed line.
C. Procedures. All pneumatic plugs shall be seal tested before being
used in the actual test. One length of pipe shall be laid on the ground
and sealed at both ends with the pneumatic plugs to be checked. Air
shall be introduced into the plugs to 25 psi. The sealed pipe shall
be pressurized to five psi. The plugs shall hold against this pressure
without bracing and without movement or the plugs out of the pipe.
After a manhole to manhole reach of pipe has been completed, cleaned,
and the pneumatic plugs are checked, the plugs shall be placed in
the line at each manhole and inflated to 25 psi. Low pressure air
shall be introduced into sealed line until the internal air pressure
reaches four psig greater than the average back pressure of any ground
water that may be over the pipe. At least two minutes shall be allowed
for the air pressure to stabilize. After the stabilization period
(4.0 psig minimum pressure in pipe), the air hose from the control
panel to the air supply shall be disconnected. The portion of line
being tested shall be termed "acceptable" if that portion does not
lose air at a rate greater than 0.02 cfm per square foot of internal
pipe surface when tested at an average pressure of psig greater than
the back pressure exerted by groundwater that may be over the invert
of the pipe at the time of the test.
D. The above requirements shall be accomplished by performing the test
as follows: The time required in minutes for the pressure to decrease
from 4.0 to 3.5 psig (greater than the average back pressure of any
groundwater that may be over the pipe) shall not be less than the
time shown for the given diameters in the following table:
|
Pipe Diameter in Inches
|
Minutes
|
---|
|
4
|
2.0
|
|
6
|
3.0
|
|
8
|
4.0
|
|
10
|
5.0
|
|
12
|
5.5
|
|
15
|
7.5
|
|
18
|
8.5
|
|
21
|
10.0
|
E. In areas where ground water exists, the contractor shall install
a 1/2 inch diameter capped pipe nipple, approximately 10 inches long,
through the manhole wall on top of one of the sewer lines entering
the manhole. This shall be done at the time the sewer line is installed.
Immediately prior to the performance of the line acceptance test,
the ground water shall be determined by removing the pipe cap, blowing
air through the pipe nipple into the ground so as to clear it, and
then connecting a clear plastic tube to the pipe nipple. The hose
shall be held vertically and a measurement of the height in feet of
water over the invert of the pipe shall be taken after the water has
stopped rising in this plastic tube. The height, in feet, shall be
divided by 2.3 to establish the pounds of pressure that will be added
to all readings. (For example, if the height of water is 11 1/2
feet, then the added pressure will be five psig. This increases the
4.0 psig to 9.0 psig, and the 3.5 psig to 8.5 psig. The allowable
drop of 1/2 pound and the timing remain the same.)
F. If the installation fails to meet this requirement, the contractor
shall determine, at his own expense, the source of leakage. He shall
then repair or replace all defective materials and/or workmanship.
12. Final Inspection.
A. Each section of installed sewer will be visually inspected by the
Engineer prior to final testing. The pipe shall: be true to both line
and grade; contain no breaks; show no leaks; show neither obstructions
or the projection of connecting pipes into the main pipe and contain
no debris or other deposits which shall in any way reduce the full
cross-section area of the pipe.
B. Any section of pipe not complying with the inspection criteria, as
determined by the Engineer, shall be promptly corrected, replaced,
or repaired by the contractor at his own expense. Methods employed
for the correction shall be approved by the Engineer.
C. In addition, deflectometer testing shall be required for sections
of PVC or polyethylene pipe installed. After notification from the
contractor of the schedule for testing, the Engineer will select the
lines to be tested. A deflection greater than 5° will be deemed
sufficient reason to cause the work to be rejected. Rejected work
will be corrected by the contractor at his own expense in a manner
acceptable to the Engineer.
D. If 50% or more of the tested linear feet of PVC or polyethylene sewer
fail the deflectometer test, the contractor shall be required to test
the remaining linear feet of PVC or polyethylene sewer at his own
expense. The deflection tests that are to be run shall be performed
without pulling devices of any sort. If rigid bells or mandrels are
used they shall have diameters equal to 95% of the inside diameter
of pipe being tested.
E. Force mains shall be hydrostatically field tested to a pressure point
50 P.S.I. in excess of the operating pressure of the main. This pressure
shall be maintained for a period of not less than one hour.
F. The contractor shall repair all defects of any nature on mains failing
to meet the above tests and shall re-test same until acceptable to
the Township/Authority.
G. In addition to testing for water leakage the Township/Authority reserves
the right to inspect the inside of all sewer lines by the TV camera
method, at the contractor's expense.
13. Force Mains. Force mains shall be installed as called for on the
plans for the project. All specifications covering the laying of gravity
sewers shall apply to the laying of force mains.
A. Cast iron or PVC pipe of the class called for on the approved plans
shall be used. Joints may be special or mechanical and shall be installed
in accordance with good practice and the manufacturer's directions
and the Township/Authority. Pipe shall be bedded in 2B crushed stone.
B. Pipe shall be cut in a neat and workmanlike manner with an approved
cutting device to insure a good joint.
C. Thrust Blocks. Thrust blocks shall be installed at all points where
the bend is greater then 10° and at all tees, caps, valves, and
reducers and where shown on the plans.
(1)
Thrust blocks shall be constructed of 3,000 psi concrete. Care
shall be taken when pouring to prevent the inclusion of foreign matter.
(2)
Care shall be taken to prevent the concrete from flowing over
or near any joint in a manner as to obstruct the use of access to
the joint for future maintenance or addition of pipes.
(3)
At points where a bend is effected by bending the pipe at the
coupling, thrust blocking shall be installed at least one foot from
the coupling.
14. Incidental Items of Work. Unless thrust blocks are called for, all
fittings at bends in force mains shall be firmly wedged against the
vertical face of the trench in order to prevent the fittings from
being blown off the line when under pressure. Where pipe ends are
left for future connections, they shall be valved, plugged, or capped,
as directed by the Engineer. Where connections are made between new
work and old force mains, the connections shall be made in a thorough
and workmanlike manner to the satisfaction of the Engineer.
15. Hydrostatic Tests.
A. The contractor shall supply all materials and labor necessary for
testing the system.
B. After the pipe has been laid and partially backfilled, all newly
laid pipe or valved section shall be subjected to a hydrostatic pressure
test. Pressure shall be maintained 50% in excess of normal working
pressure or 150 pounds per square inch, whichever is greater, for
a period of one hour. Each valved section shall be slowly filled with
water at the specified test pressure. This water shall be supplied
by means of a pump connected to the pipe in a manner satisfactory
to the Engineer. The contractor will also be required, if necessary,
to provide suitable taps in the pipe for the purpose of inserting
gauges required for testing.
C. All pipe fittings, valves and joints shall be examined carefully
during the pressure test and any leaking joints or fittings repaired
or replaced. Any cracked pipe or fittings shall be removed and replaced.
The test shall be repeated until satisfactory to the Engineer. Section
of force main to be tested at one time shall not exceed 1,000 linear
feet.
16. Leakage.
A. During the hydrostatic tests, provisions shall be made to measure
the quantity of water necessary to maintain test pressure. No pipe
installation shall be accepted unless the leakage (evaluated on a
pressure basis of 150 pounds per square inch) is less than 100 U.S.
gallons per 24 hours per mile, per inch of diameter of pipe of twelve-foot
lengths, 75 U.S. gallons for sixteen-foot lengths, and correspondingly
varied for other lengths of pipe.
B. Evaluation of the actual to the leakage under the assumed basic pressure
of 150 pounds per square inch shall be calculated by the application
of the ratio determined from the square root of the respective pressures.
17. Air Relief Valves on Force Main. An air relief valve shall be furnished
and installed on the force main in manhole at all high points in the
force main. The air valve shall be of the type equivalent to Simplex
type "AVS" with gate valves and flushing connection, Clow Co. or approved
equal. See detail drawing.
18. Connections to Manholes.
A. An approved manhole adapter shall be used to form a water tight connection
between the pipe and the manhole. It shall be a coupling or a rubber
ring precast or grouted directly into the manhole, or an approved
equal.
B. The pipe shall not terminate in the coupling, but shall extend into
the manhole a sufficient distance to properly connect the sewer pipe
entering from the side of the manhole with the main channel.
19. Anchoring Pipe on Steep Slopes. Whenever the slope of the pipe is
70% or greater, pipe anchors as shown on the detail drawing shall
be used. Spacing or anchors shall be as shown on the detail drawing.
[Ord. 2003-0-2, --/--/2003, § 101-101]
1. Manholes.
A. Manholes shall be constructed as shown on the plans, or as may be
directed by the Engineer. Details are shown in the detail drawings.
B. Precast concrete manholes shall be used unless permission to use
brick is given in writing. Precast manholes used shall be water tight
and of the eccentric cone type. All manholes shall conform to ASTM
C-478-6 IT, or latest revision.
C. Precast bases shall be used and shall be bedded on a minimum of six
inches of 7B stone or 3/4-inch stone. Lengths of pipe immediately
adjacent to each manhole shall have a maximum length of 6 1/2
feet. Joints of manholes and pipe entry shall be sealed with a round
rubber gasket as specified in §§ 5.7 and 4.1 of ASTM
C-361. Insides and outsides of joints shall be smoothed off with mortar.
Outsides of manholes shall be coated with two coats of bitumastic
material. Sections of manhole shall be set so that the manhole steps
form a straight ladder. Concrete under and around manholes shall be
3,000 PSI mix. In junction manholes, care shall be taken to properly
connect the sewer pipes entering from the sides with the main channel.
All such connecting channels shall be molded in the concrete base
of proper size, cross-sections, to the required grade, and finished
smooth.
D. Concrete for manhole foundations, if brick manholes are permitted,
shall be 3,000 psi mix. The contractor shall carry the excavation
from six inches to 89 inches lower than the bottom of the concrete
foundation, filling this space with spalls or crushed stone to act
as an underdrain and cover the underdrain with a layer of paper or
cloth sufficiently heavy to prevent the mortar in the concrete from
penetrating into the base.
E. All brick masonry shall be carefully laid using cement mortar of
thickness and dimensions as shown in the Standards. Bricks must be
laid on a bed of cement mortar and then pushed into place, so that
the mortar pushed ahead of the brick will completely fill the space
to the previously laid block of the same course. Joints shall not
be more than 1/2 inch in thickness, and all brick must be sewer brick
and shall be thoroughly wet before laying, preferably by immersion.
Brick masonry shall not be laid or cement work of any kind done when
the temperature is below 40° F.
F. The walls of brick manholes shall be plastered on the outside with
a 3/4-inch coat of cement mortar, and shall be corbeled so that there
is a straight side where steps are placed, and shall be carried up
to such a height that when the casting is placed thereon, it shall
not project above the finished grade of the street. The two courses
must be 24 inches in inside diameter. The inside of the walls shall
have wiped joints as noted on the detail drawings.
G. Ground Water. In constructing manholes, all ground water shall be
kept away from newly poured concrete or freshly laid brick work until
cement has properly set and until a water-tight job is obtained. Manholes
which admit ground water after completion must be repaired to the
satisfaction of the Township/Authority.
H. Shallow Manholes. Where required because of limited depth, precast
manholes shall be constructed in accordance with the detail drawing.
I. Setting Castings. All manhole frames and covers shall be set true
to line and grade. Frames and covers shall conform to requirements
set forth under Materials. When set in a road or paving the frame
shall be sloped to conform to the existing paving and shall not project
above or below. Four 3/4-inch anchor bolts shall be used to secure
the frame to the manhole after a minimum one-inch diameter ring of
plastic butyl rubber joint sealant, conforming to Federal Specification
SS-5-002 10, has been placed under the frame. The sealant ring shall
be placed in such a manner that tightening of the anchor bolts will
cause a continuous watertight seal to be formed between the manhole
structure and the cast iron frame.
J. Manhole Steps. Steps shall be set in masonry along the straight side
of the manhole to form a ladder, and spaced not exceeding 12 inches
center to center. In manholes where there are drop connections of
more than four feet, an additional step shall be placed in the wall
opposite to the step which is nearest to three feet below the upper
opening of each drop connection.
K. Manholes shall be constructed promptly as the sections of the sewer
between them are completed and, unless this is done, the Township/Authority
shall have authority to stop trenching and pipe laying until manhole
construction is completed.
2. Drop Connections.
A. In all junction manholes where the grade line of one sewer is two
feet greater than that of the other, or if directed by the Township/Authority,
the connection shall be made by means of a "drop connection." See
detail drawing.
B. The pipe and fittings used for the drop connection shall be of the
same type and class as used for the sewer line coming into and exiting
the manhole. Concrete for encasing pipe shall be 3,000 psi mix high
early strength and shall be certified.
C. Care shall be taken to have all pipes laid to correct lines and grades,
as established by the contractor's engineer.
3. All other appurtenances and structures will be constructed according
to the detail drawing.
4. Manholes shall be installed at the end of each line, at all changes
in grade, size or alignment, and at distances not greater than 350
feet between them.
5. Watertight Manhole Covers. Watertight manhole covers and frames shall
be as shown on the detail drawings. This type cover and frame shall
be used whenever the manhole is located within the one-hundred-year
floodplain as well as wherever dictated by good design practice.
[Ord. 2003-0-2, --/--/2003, § 101-102]
1. Concrete.
A. All concrete shall consist of plant mix or "ready mix" concrete unless
job mixed concrete is permitted by the Township/Authority Engineer.
All ready mixed cement shall conform to ASTM C-94. The producer of
the concrete shall be approved by the Township/Authority Engineer
and certificates of test materials and proportions shall be furnished
by the supplier as many times as may be required. The Township/Authority
Engineer shall have the right to inspect the plant of the supplier
at any time.
B. Job mixed concrete shall conform to all applicable specifications
for ready mix concrete contained herein and all concrete shall be
mixed in an approved mixer.
C. Cement shall conform to ASTM C-150, Type 11 or ASTM C-175 for Air
Entraining Cement. Air entrained concrete shall be used for all walk
and curb replacement and other exposed concrete work and shall contain
3% to 6% of air.
D. Coarse and fine aggregate shall conform to ASTM C-33, and shall be
graded to produce a dense concrete. Maximum size of aggregate shall
be 3/4 inch.
E. Water shall be clean, free from deleterious amounts of acids, alkalis,
or organize materials. Maximum water content shall be 6.6 gallons
per sack, including free moisture in aggregate. No concrete exposed
to the action of freezing weather shall have more than six gallons
of water per sack of cement. No frozen, lumped or caked materials
shall be used.
F. Proportions. All materials for concrete shall be proportioned by
weight and once the proportions required for the desired concrete
are obtained, they shall not be changed without permission.
G. Strength of Concrete. Concrete for general use shall develop a compressive
strength of 3,000 psi when tested in accordance with the Standard
Method of Making Compression Tests of Concrete of the American Society
for Testing Materials. Samples of concrete shall be taken by the contractor
as and when directed by the Engineer, and tests shall be made at the
expense of the contractor by a reputable laboratory approved by the
Engineer. PennDOT Class "A" cement concrete shall be used for concrete
base under state highways.
H. Slump. Slump tests shall be made by the contractor throughout the
course of the work and as required by the Engineer. A slump cone shall
be provided by the contractor for the Engineer's use. Slump of
concrete shall be seven inches to four inches. Slump shall be determined
by ASTM C-143.
I. Temperature for Concrete Work. No concrete or cement work shall be
done when the atmospheric temperature is below 40° F., except
under special conditions when heaters are employed. No anti-freezing
ingredient shall be mixed with concrete or cement work. Freshly laid
concrete shall be covered by approved shelters, and means shall be
provided for keeping the air beneath the shelters warm and moist by
live steam or other methods. The Engineer shall approve the method
of protecting all concrete.
J. Small Quantities of Concrete. If small quantities of concrete are
mixed by hand, the fine aggregate and cement shall be mixed dry in
a steel mortar box until the mixture is an even and uniform color
throughout. It shall then be wet with the proper quantity of water
and thoroughly mixed by hoes. The crushed stone shall be spread on
a wooden or steel platform to make a bed of uniform thickness, and
after being wet the mortar shall be added and the whole mass turned
with square edged shovels until it is thoroughly mixed.
K. Concrete additives shall be used only with the permission of the
Engineer and in accordance with the manufacturer's directions.
L. Curing. Provision must be made for maintaining concrete in a moist
condition for a period of five days after placement, except that for
hi-early strength concrete moist curing shall be provided for two
days.
M. White pigmented concrete curing compound shall be applied in conformance
with the manufacturer's directions to all curb and walk replacement
and all other above-grade concrete work.
N. The basis for final acceptance of concrete shall be the specified
minimum allowable compressive strength at 78 days in terms of tests
of standard specimens cured under standard laboratory conditions for
moist curing as determined on samples taken from the transportation
unit at the point of discharge.
O. The contractor shall provide the Engineer with a carbon copy of each
original delivery ticket accompanying loads of ready-mixed concrete
for each day's pour. The manufacturer shall certify, on each
delivery ticket, the proportions selected will produce concrete of
the quality specified and that the mix has the desired air content
and slump.
P. The contractor shall also furnish a statement to the Engineer giving
the proportions by weight (dry) of cement and of fine and coarse aggregates
used in the manufacture of each class of concrete.
Q. All rejected concrete shall be promptly removed and replaced at the
expense of the contractor.
R. During the work, compression test specimens may be required by the
Engineer. All tests shall be made in accordance with ASTM Standards
C-31 and C-39.
S. The contractor shall assume all cost of all preliminary and field
tests on the concrete as well as any corrective measures.
T. Forms shall conform to the shape, lines, and dimensions of the members
as called for on the plans, and shall be substantial and sufficiently
tight to prevent leakage of mortar. They shall be properly braced
or tied together so as to maintain position and shape. The Engineer
may require that only wooden forms be used on certain structures.
U. Depending on the method of curing used, the forms shall not be removed
within 48 hours after the concrete has been placed. No rubbing to
correct irregularities will be permitted until the full curing period
has elapsed.
V. After removal of forms and the curing period has elapsed, all unsightly
ridges or lips shall be removed and undesirable local surfaces bulges
shall be remedied. All voids and holes left by the removal of tie
rods shall be reamed and neatly filled with dry-parching mortar (pre-shrunk)
mixed with one part cement and two parts fine aggregate or as directed
by the Engineer. The cement used in the mortar shall be a blend of
Portland Cement and White Portland Cement properly proportioned so
the final color of the cured mortar will be the same as the color
of the surrounding concrete. Defective concrete shall be repaired
by removing or cutting out the unsatisfactory material and placing
new concrete, formed with keys, dovetails, or anchors to attach it
securely in place. Concrete for patching shall be drier than the usual
mixture and shall have thoroughly tamped into place. All unformed
surfaces of concrete not to be covered by addition concrete or backfill,
shall have a wood float finish without additional mortar.
W. Adequate equipment shall be provided for heating of concrete materials
and protecting the concrete during freezing or near-freezing weather.
No frozen materials or materials containing ice shall be used.
X. All concrete materials and all reinforcement, forms, fillers, and
earth which the concrete is to contact shall be free from frost. Whenever
the temperature of the surrounding air is below 40° F., all concrete
placed in the forms shall have a temperature of between 70° F.
and 80° F., and adequate means shall be provided for maintaining
a temperature of not less than 70° F. or three days or 50°
for five days except that when high-early strength concrete is used
the temperature shall be maintained at not less than 70° F. for
two days or 50° F. for three days or for as much time as is necessary
to insure proper curing of the concrete. The housing, covering or
other protection used in connection with curing shall remain in place
and intact at least 24 hours after the artificial heating is discontinued.
No dependence shall be placed on salt or other chemicals for the prevention
of freezing.
Y. Connections shall be made by the contractor at such a time and in
such a manner as the Township/Authority may direct. Any customers
to be affected by the plugging of mains shall be notified by the contractor
and all plugs will be placed under the direction of the Township/Authority
representative. Connections shall be completed as quickly as possible
to keep inconvenience at a minimum. If deemed necessary by the Township/Authority,
connections will he made at night. Any existing facilities that must
he removed to make connections shall be removed by the contractor.
2. Reinforcing Steel. Reinforcing steel shall be formed bars complying
with ASTM A-15-58T, or the latest revision, rolled from new billets
of identified heats manufactured by the open-hearth process. Welded
wire fabric shall conform to ASTM A-87 or A-185 and shall be six inches
by six inches by 6/6 unless otherwise shown in the details or standards.
3. Steel Casing Pipe.
A. Shall have a minimum diameter as shown on drawings or specified herein
and have a minimum yield strength of 35,000 psi. Pipe shall be uncoated
and of the following minimum thickness:
|
Diameter
|
Minimum Thickness
|
---|
|
18
|
0.344 inches
|
|
20
|
0.375 inches
|
|
24
|
0.438 inches
|
|
30
|
0.501 inches
|
|
36
|
0.626 inches
|
|
42
|
0.688 inches
|
B. Joists shall be of the butt and weld type construction suitable for
jacking.
4. Brick. Sewer brick shall conform to the requirement of AASHTO Designation
M91 for Grade SS sewer bricks.
5. Castings. Ferrous castings shall be manufactured of uniform quality,
free from blowholes, porosity, hard spots, shrinkage, distortion,
or other defects. Also castings shall be smooth and well cleaned by
shot blasting. Materials used in the manufacturer of castings shall
conform to the requirements of ASTM A48-76, Class 30 or better, for
gray iron or ASTM At36-77 for ductile iron. The castings shall be
coated with asphalt paint resulting in a smooth casting tough and
tenacious when cold and not tacking or brittle. All manholes frames
and covers shall be watertight unless written authorization is received
from the Township/Authority approving an alternative. The contractor
shall submit details or the watertight frames and covers they propose
using to the Engineer for approval prior to installation.
6. Crushed Aggregate or Granular Backfill. Where specified, crushed
aggregate backfill shall conform to PennDOT Specifications, latest
revisions, for AASHTO Number 57 modified stone. Formerly acceptable
2B modified as specified in PennDOT form 408. Granular backfill, when
specified shall consist of 2RC aggregate as specified in PennDOT Publication
408, latest revision.
7. Mortar. All mortar specified shall consist of one part cement to
two parts sand or fine aggregate. One volume of sand shall be one
cubic foot; one volume of cement shall be 94 pounds.
8. Portland Cement. All Portland cement shall conform to ASTM C-150
Type 1.
9. Reinforcement. All reinforcing base shall be free from rust or other
material inhibiting the concrete bonding process. Placement, splicing,
tying, bending, and protection of reinforcing base shall be in accordance
to the PennDOT 1994 Specifications, latest revisions.
10. Construction Joints. All constructions joints not indicated on the
construction plans shall be constructed and formed as to least impair
the strength of the structure. Where a joint is to be made, the abutting
concrete surfaces shall be thoroughly cleaned. Also all vertical joints
shall be thoroughly wetted and slushed with a coat of neat cement
grout immediately preceding the placement of the new concrete.
11. Watertight Joints. Whenever new concrete surfaces abut old concrete
surfaces, the contractor shall provide a water-tight joint. The joint
sealant shall be an Igas joint sealant. The joint shall be primed
with Igas primer and the joint shall be made in strict accordance
with the manufacturer's recommendations.
12. Sand. Sand shall conform to the requirement of ASTM C-144.
13. Stone or Gravel Foundations.
A. Stone or gravel foundation shall consist of crushed stone or "run
of pit" gravel that shall be clean, sharp, trap rock, and free of
loam, organic matter, soft or flaky materials, or other deleterious
material. Prior to the stone or gravel being brought on the site,
the size, type, and source must be approved by the Engineer. Maximum
permissible stone size for foundation shall be No. 7 stone, approximately
3/4 inch, as specified by PennDOT Form 408 1976 edition. Under the
PennDOT 1994 Specifications AASHTO Number 67 stone shall be considered
acceptable.
B. Stone shall be placed in the bottom of the trench in approximately
six-inch layers and thoroughly compacted. The contractor shall then
excavate the top portion of the stone foundations so that the stone
conforms to the external radius of the pipe.
14. Water. Water used in mixing or curing of Portland cement concrete
shall be reasonably clean, and free from vegetable matter, oil, acid,
alkali, sugar, or any foreign substance.
15. Manholes and Manhole Construction.
A. Manholes shall be constructed of concrete channels and bottoms, brick
or concrete walls, galvanized, wrought iron, or aluminum alloy steps
and/or cast iron frames and covers as indicated.
B. Manhole construction shall conform to design of applicable standard
details, made part of these specifications and other details set forth
herein. In constructing the base, a slab of concrete shall first be
poured. After slab has set the walls forming the sides of manhole
shall be constructed. The base shall then be completed by constructing
channels, using form work for straight or curved channels, and filling
in the space around forms with concrete up to a point equal to two-thirds
of the diameter of the largest pipe passing through the manhole. The
top surface shall be neatly troweled off and given a slight slope
from sides toward center.
C. The precast concrete sections shall have a four-, five-, or six-foot
internal diameter, with a two-foot diameter at the top of the cone
section. The joints shall be manufacturer's standard. "Pipeline"
tight, with embeco type mortar grout joint with approved epoxy additive.
The risers and cone sections shall be adequately reinforced in accordance
with ASTM C-478 specifications.
D. All brick manholes shall have both inner and outer walls pargeted.
16. Cast Iron.
A. The contractor shall furnish and install all cast iron fittings and
castings where needed. Unless otherwise called for, fittings shall
be ASTM Standard A-48, Class 30, and shall be coated with bitumin
paint before delivery.
B. An castings shall conform to the standards set forth in the detail
drawings.
C. All cast iron must be tough and have an ultimate tensile strength
of 35,000 pounds per square inch with a light gray fracture. All castings
shall be free from cracks, cold shuts, or blow holes, straight true
to pattern, and have a workmanlike finish.
17. Manhole Frames and Covers.
A. Ferrous casting shall be manufactured by Neenah Foundry Company,
Neenah, Wisconsin, or approved equal. They shall be of uniform quality,
free from blowholes, porosity, hard spots, shrinkage distortion or
other defects. They shall be smooth and well cleaned by shot blasting.
They shall be coated with asphalt paint which shall result in a smooth
coating, tough and tenacious when cold, not tacky and not brittle.
B. Castings shall be designed for AASHTO Highway Loading Class HS-70.
Material used in manufacturing of castings shall conform to ASTM Designation
A48-Class 35 Gray Iron. Tensile test bars made from each heat, from
which castings are poured, must be tested by a fully accredited laboratory.
A notarized certificate for these test bars must be provided to verify
minimum tensile strength of 35,000 psi.
C. All castings shall be manufactured true to pattern; component parts
shall fit together in a satisfactory manner. Round frames and covers
shall have machined bearing surfaces to prevent rocking and rattling
under traffic. Covers and frames shall be interchangeable.
D. Self-sealing lids shall be used and shall have a continuous one piece
round gasket which is designed to press lit within a precisely machined
Dovetail groove in the bearing surface of the lid. The gasket material
shall be neoprene of a composition with good sealing, abrasion resistance,
and low compression set qualities. Gluing of gasket will be prohibited.
E. Manufacturer's shop drawings must be submitted to the Engineer
for approval prior to manufacture. The Engineer shall retain the right
to reject castings not conforming to this specification and or approved
submittal drawings.
F. Where shown on the plans or required by the Engineer, the contractor
shall install a watertight manhole cover and frame in place of the
regular manhole cover and frame. The water tight manhole frame and
cover shall be as shown on the detail drawings.
18. Cast Iron Pipe. Where specified on the plans, cast iron pipe shall
be used. Cast iron pipe shall conform to Federal Specifications WW-P-471
and shall be 150 pound class. All cast iron pipe shall be of the bell
and spigot type with special joints or mechanical joints. The joint
shall be approved by the Engineer before use and installed in accordance
with the manufacturer's instructions. Another acceptable joint
is the "slip-on" joint made by the insertion of a large rubber gasket
into the soil pipe hub such as "dual-tite," "multi-tite," and "ty-seal."
19. Ductile Iron Pipe. When ductile iron pipe is designated, all pipe
shall be ductile iron, push-on joint or mechanical joint, and shall
conform to ASA-A2 1.51 (AWWA C-15 1). All pipes shall be coated outside
and seal coated inside. All joints shall make use of rubber gaskets
to effect a seal. All joints shall be in accordance with ASA Specification
A2 1.11.
20. PVC Plastic Gravity Sewer Pipe. This specification designates general
requirements for unplasticized polyvinyl chloride (PVC) plastic gravity
sewer pipe with integral bell and spigot joints for the conveyance
of domestic sewage.
A. Materials. Pipe and fittings shall meet extra-strength minimum of
SDR-35 of the requirements of ASTM specification D3034-74. Elastomeric
gasket, if rubber, should comply with the physical requirements specified
in ASTM-D-1 819, C-361 or C-433.
B. Pipe. All pipe shall be suitable for use as a gravity sewer conduit.
Provisions must be made for contraction and expansion at each joint
with a rubber ring. The bell shall consist of an integral wall section
with a solid cross-section rubber ring factory assembled, securely
locked in place to prevent displacement. Sizes and dimensions shall
be as shown in this specification. Standard lengths shall be 70 feet.
And 17.5 feet +/- one inch. At manufacturer's option, random
lengths of not more than 15% of total footage may be shipped in lieu
of standard lengths.
C. Fittings. All fittings and accessories shall be as manufactured and
furnished by the pipe supplier, or approved equal, and have bell and/or
spigot configurations compatible with the pipe.
D. Physical and Chemical Requirements. Pipe shall be designed to pass
all tests at 73° F. (+/- 3° F.).
E. Deflection. Deflections due to earth loading on PVC sewer pipe shall be limited to a maximum of 5%, as calculated by the Spangler equation (Note: Refer to the 1970 edition of the American Society of Civil Engineers Manual of Practice No. 37, Chapter 9, Section E, Subsection
1, latest revisions).
21. Testing and Certification of Materials.
A. All suppliers of materials incorporated into the project shall supply
notarized statement in duplicate stating their material complies with
the specifications set forth herein.
B. Notarized certification of tests made at the plant on all pipe shall
be provided.
C. All materials will be tested periodically by the methods specified
previously. The contractor shall render all necessary labor, materials,
and equipment necessary for collecting, packaging, and identifying
all samples.
[Ord. 2003-0-2, --/--/2003, § 101-103]
1. Trench Paving Restoration. The contractor shall meet all requirements
of PennDOT and/or Township regulations where the sewer crosses or
is adjacent to their paving. In state highways, the requirements of
the PennDOT Form 945-B, latest revision, and the State Highway's
Inspector shall govern. Temporary paving shall be installed within
48 hours after backfilling the trench. Permanent paving shall not
be replaced until a minimum of 90 days has elapsed after backfilling.
2. State Roads.
A. Restoration of all trenches in state roads shall conform to PennDOT
specifications and the requirements delineated in the highway occupancy
permit.
B. State Road Overlay. Where required on state roads, there shall be
a complete road overlay of a minimum of 1 1/2 inch compacted
thickness of ID-2 wearing material with tack coat. Width of paving
shall conform to the existing width of paving. Length shall be as
required by the PennDOT Material and installation shall conform to
PennDOT Specifications. Where complete overlay is required the total
depth of bituminous concrete surface and base course over the trench
shall not be less than 7 1/2 inches. Trench cutbacks, tack coats,
and sealers shall equally apply as required under subparagraph .A
above.
3. Township Roads.
A. Longitudinal and Lateral. Base course for repaving on all local roads
shall be bituminous base course unless a crushed stone base course
is approved in writing by the Engineer. Bituminous concrete base course
shall conform to PennDOT Specifications, Publication 408, § 305.
Just prior to placing the permanent paving, the existing paving shall
be cut back 12 inches on each side of the trench. This cutback shall
be to a depth sufficient to contain the entire cross-section of replaced
paving. The edge of the cut shall be neat and straight. Minimum depth
of bituminous concrete base course laid shall not be less than five
inches. Prior to placement of any bituminous concrete, the edges of
the cut shall be painted with Class BM-I asphaltic cutback.
B. Crushed stone or slag used for base courses shall be #3A or #4 ballast
and shall conform to PennDOT Specifications. Crushed stone or slag
shall be laid in place, chocked with screenings and rolled with at
least a ten-ton roller in four-inch layers until a firm, stable base
is obtained. Prior to laying the bituminous concrete, the base course
shall be broomed to expose the ballast and provide a bonding surface
for the surface courses. Thickness shall be as shown in the detail
drawings. One inch of limestone screenings shall be placed under all
crushed stone base courses.
C. All roads shall be restored with a minimum of two-inch ID-2 binder
course and 1 1/2-inch ID-2 wearing course. The ID-2 shall be
made with BM-I asphalt unless the Engineer approves another. These
materials shall conform to PennDOT Specifications with respect to
composition and laying procedures. Thickness of each course shall
be after compaction and shall conform to the detail drawings. Finished
paving shall be smooth and conform in grade to the surrounding paving.
All compaction shall be done with at least a ten-ton roller.
D. Prior to placement of any bituminous concrete, the edges of the cut
shall be painted with Class BM-I asphalt cutback. Edges of the finished
paving shall have hot poured Class A-I asphalt cement applied as a
sealer.
E. Township Road Overlay. Where required, there shall be a complete
overlay of 1 1/2-inch compacted thickness of ID-2 surface material,
with tack coat. Width of paving shall conform to the existing width
of paving and present uniform edges throughout. Where bituminous base
course is used with the 1 1/2-inch overlay, the depth of the
base paving shall be increased two inches and brought level to the
original road paving surface. Where crushed stone or slag base is
used for base course with the 1 1/2-inch overlay, a two-inch
ID-2 binder course shall be placed and brought level to the original
road paving surface. Trench cut backs, tack coats, and sealers shall
equally apply as required under the parameters of this section.
4. Paving that has been scarred or cut by the contractor's equipment
outside the trench shall be cut to a minimum depth or 1 1/2 inch
and paved with bituminous concrete wearing course. The edges of the
patch will he sealed with hot poured Class A-I asphalt sealer.
5. All paving that settles shall be replaced by the contractor. Settled
paving shall be removed to the base course and the edges cut square.
Paving shall then be replaced according to the above specifications
and the edges shall be resealed.
6. The contractor shall arrange with all utilities to reset water and
gas boxes and manhole frames and covers not conforming with the finished
grade of paving. If necessary, the contractor shall reset manhole
frames and covers for the sanitary sewer.
7. Temporary Paving. Temporary paving shall be installed and maintained
as specified in the trenching and backfilling section, immediately
upon backfilling of the trench.
8. Restoration. Prompt restoration is of the utmost importance to maintain
access to homes and places of business and to maintain public relations.
If it is the opinion of the Engineer that complete restoration is
not proceeding fast enough behind pipe laying operations, he shall
notify the contractor, in writing, to correct the situation. If, within
seven calendar days after the date of notice, the contractor has not
corrected the situation, the Township/Authority shall stop all excavation
and pipe laying operations until restoration is brought up to date.
[Ord. 2003-0-2, --/--/2003, § 101-104]
1. Concrete Sidewalks. The existing sidewalk shall be broken off evenly
at the nearest "groove" or "dummy joint" on both side of the trench.
The sidewalk shall be replaced using reinforcement and thickness as
shown in the detail drawings. The width of the replaced sidewalk shall
conform to that of the old sidewalk (four-inch minimum). The replaced
sidewalk shall be finished in a workmanlike manner. Concrete used
shall be 3,000 psi concrete. Concrete shall be sprayed with a white
pigmented membrane curing compound immediately after its initial set.
2. Bituminous Sidewalks. The ends of existing sidewalks shall be cut
square on both side of the trench and replaced according to the detail
drawings. Width of the replaced sidewalk shall conform to the old
sidewalk, and it shall be finished in a workmanlike manner. All bituminous
sidewalks shall be rolled.
[Ord. 2003-0-2, --/--/2003, § 101-105]
1. Concrete Curb. All concrete curb shall be replaced in ten-foot sections
with expansion joints every 30 feet. Straight sections shall be formed
with steel forms and curved sections with plywood forms. All curb
shall be constructed using 3,500 psi concrete and finished in a workmanlike
manner. Surfaces of concrete curb shall be rubbed or brushed. All
curb shall be constructed with a cross-section the same as that of
the existing curb. Concrete shall be sprayed with a white pigmented
membrane curing compound immediately after its initial set.
2. Bituminous Curb. Bituminous curb shall be replaced in a workmanlike
manner with a cross-section equal to that of the existing curb. In
the event that the curb was machine laid, the replaced curb shall
be machine laid also. Bituminous material used shall be ID-2 wearing
course.
3. Granite Curb. Granite curb shall be replaced in four-foot to eight-foot
sections and shall consist of granite or bluestone of approved quality
free from structural defects. Curb shall be cut square on the front
and top and three inches down in the back. Cross-section of replaced
curb shall equal that of the existing curb. All joints are to be no
wider that 1/4 inch and shall be set on twelve-inch by twelve-inch
3,000 psi concrete chairs. Wherever possible, the existing granite
curb will be removed before construction.
4. Rubble Curb and Gutter. Shall be replaced in a workmanlike manner
to conform to the existing curb or gutter. Materials shall conform
to those used in the original gutter.
[Ord. 2003-0-2, --/--/2003, § 101-106]
1. Bituminous drives shall have the existing faces cut square. The subgrade
shall be rolled with a five-ton roller until hard and the paving replaced
as shown in the detail drawings. Four-inch minimum crushed stone for
the base shall be 2B or 3A and shall conform to PennDOT Specifications.
After the stone is in place, it shall be choked with fines and rolled
until it forms a firm, stable base for the paving. The surface of
the base shall be broomed until it is substantially free of fines
with coarse stone exposed to provide a good bonding surface for the
paving.
2. The paving shall consist of a two-inch ID-2 wearing course asphaltic
concrete that conforms to PennDOT specifications. The asphaltic concrete
shall be rolled with a powered roller weighing a minimum of five tons
until it is compacted and smooth and blends with the surrounding paving.
Thickness of the various layers shall be as shown in the detail drawings.
Edges of the finished paving shall be sealed with hot Class A-I asphalt
cement.
3. Concrete Drives. All edges shall be cut square. The concrete shall
be of 3,500 psi mix or Class A cement concrete and shall conform to
the detail drawing. Reinforcement shall be as shown in the detail
drawing. The concrete shall blend smoothly with the old pavement,
be smooth and have a broom finish. Concrete shall be sprayed with
a white pigmented membrane curing compound immediately after its initial
set.
4. Stone Drives. Shall have the subgrade thoroughly tamped and covered
with four inches of 2B stone. After the stone is in place, it shall
be choked with fines, then broomed and tamped until it becomes stable.
[Ord. 2003-0-2, --/--/2003, § 101-107]
1. Grass areas shall be restored as soon as practical after backfilling
of the trench. However, planting will be limited to work days between
the 15th of March and the 15th of October of the same year.
2. Topsoil will be placed over the trench to a minimum depth of four
inches and on other damaged areas to a minimum depth of two inches.
The topsoil and surrounding areas shall then be raked smooth and be
free from all stones, wood, and other debris. A commercial 10-10-10
fertilizer shall then be applied at a rate of 10 pounds per 1,000
square feet and mixed into the topsoil for a depth of two inches.
Grass seed of the specified composition shall then be spread evenly
at a rate of six pounds per 1,000 square feet by means of a mechanical
spreader over the trench and any surrounding area. All seeded areas
shall be rolled with a lawn roller weighing not more than 100 pounds
per foot of width.
3. Grass seed shall be mixed and certified to be as follows:
|
|
Lawn Mixture Parts
|
Percentage Purity
|
Germination
|
|
Kentucky Bluegrass
|
35%
|
90%
|
85%
|
|
Pennlawn Fescue
|
25%
|
90%
|
85%
|
|
Pennfine Ryegrass
|
15%
|
90%
|
85%
|
|
Annual Ryegrass
|
15%
|
90%
|
85%
|
|
Red Top
|
10%
|
90%
|
85%
|
4. Slopes and Banks. Any area to be seeded having a slope of 5% or greater
shall be mulched with seed and weed-free salt hay, not moldy or rotten,
at the rate of one 75 pound bale per 1,000 square feet. Slopes in
excess of three to one shall also be covered with jute matting and
installed per manufacturer's recommendation.
5. Sod.
A. Sod shall be at least 60% perennial grass, strongly rooted, and free
of pernicious weeds. It shall be mowed to a height not to exceed two
inches before lifting and shall be of uniform thickness with not over
1 1/2 inch or less than one inch of soil. All sod shall meet
the requirement of PennDOT Publication 408 as far a composition and
installation requirements.
B. All sod shall be set and in place within 48 hours of being cut. Due
consideration shall be given to weather conditions. Dried out sod
will be rejected whenever, in the judgment of the Engineer, survival
is doubtful.
C. Surfaces on which sod is to be laid, will be firmed with a light
roller and dampened before the sod is put down. Sod pieces shall fit
snugly to prevent water from lifting them.
D. Tamping. Each piece of sod shall be tamped sufficiently to bring
the under surface into firm contact with the soil.
E. Each strip or section of sod shall be staked securely with at least
one wooden stake for each two square feet of sod. Stakes measuring
1/2 inch by one inch by 12 inches shall be driven flush with the top
of the sod, with the long face parallel to the slope contour, sod
strips to be two feet zero inches O.C. The contractor shall keep the
sodded areas adequately moist.
6. Maintenance. Watering will depend on weather conditions, but maintaining
favorable moisture conditions for seed germination is the responsibility
of the contractor.
7. Guarantee. The contractor shall guarantee germination, maintain plantings,
up to and including the second cutting, and shall re-seed or re-sod
as often as necessary to insure 90% coverage of the affected area.
It is the contractor's responsibility to restore all seeded and
sodded areas to a smooth and even surface with a dense, uniform growth
of grass. Final payment of the contract will not be made until these
conditions are satisfied.
8. Clean Up. All rubbish and other material will be removed from the
premises and the entire job will be left in a condition satisfactory
to the Engineer. In areas where work has been on or near paving, the
paving shall be swept or flushed clean to the satisfaction of the
Engineer.
9. In a few instances it will be apparent that a particular property
owner has gone to additional expense and effort to establish a fine
lawn. In these cases the contractor will use grass seed of the same
type and quality of the surrounding lawn. Seed application will be
at the rate of seven pounds per 1,000 square feet.
10. Hydro-Seeding. In lieu of other mechanical seeding operations, Hydro-Seeding
(technique of mixing seed, fertilizer and a green fiber mulch into
a homogenous slurry which is then sprayed on the area being seeded)
may be substituted.
11. All slopes of 5% or over will be "tack-coated." Rates and types of
materials shall be approved by the Engineer before applying.
12. Special Seasonal Seeding. Should it become necessary, in the opinion
of the Engineer, to perform lawn work and restoration of grassed areas
beyond the normal planting cut-off of the 15th of October, the contractor
will be required to use the following late fall seeding formula, with
mulch, as a protective winter cover only:
|
Description
|
Application Rate
|
|
Winter Rye
|
10 lbs. per 1,000 square feet
|
|
Annual Rye
|
6 lbs. per 1,000 square feet
|
[Ord. 2003-0-2, --/--/2003, § 101-108; as amended
by Ord. 2010-01, 3/23/2010]
1. Private Property.
A. Where the sewer lines are proposed to be located on private property,
the owner or responsible party for sewer construction will obtain
easements and/or permission from the property owner to enter thereon
for the purpose of constructing sewers prior to construction. The
contractor shall confine his operations to as narrow limits as possible
to install sewers.
B. The contractor shall conduct his work so there will be a minimum
disturbance of the property crossed. All work on private property
shall be done in such a manner as to avoid the unnecessary cutting
of vegetation and other disturbance not actually obstructing the installation
of the sewers. Any damage to the property shall be made good by the
contractor at his expense. Upon completion of the work, the contractor
shall clean up the disturbed areas and restore them to a condition
at least equal to that previously existing.
2. Clean Up.
A. During the progress of the work and until the completion and final
acceptance thereof, all pipe lines and their appurtenances shall be
kept thoroughly clean throughout. Obstructions or deposits, discovered
at any time, shall be removed at once by the contractor without extra
compensation. After completion of work and prior to testing, all pipe
lines and their appurtenances shall be left clean, free, and in good
order.
B. On or before the completion of work, the contractor shall, without
charge, tear down and remove all trailers, temporary buildings, and
other structures built by him. He shall remove all rubbish and debris
from any grounds he has occupied and shall leave the line of the work
in a clean and neat condition.
3. Pump Station.
A. Pump stations shall be constructed using a pre-fabricated lift station
with dual suction lift pumps with an auto start motor fed by natural
gas. When a prefabricated underground pump station is utilized an
emergency generator shall be provided using natural gas. If natural
gas is not available, diesel fuel may be used. Emergency generators
shall be as manufactured by Generac or approved equal. All generators
shall be installed in accordance with the manufacturer's recommendations.
The pump station will be as manufactured by Gorman Rupp or an approved
equal. All installation requirements shall conform to manufacturer's
requirements.
B. All pump stations shall require the installation of a telemetry system
for alarms and meters as well as a meter pit or metering facility.
All telemetry systems and metering devices must be approved by the
Township/Authority prior to installation.
4. Conformance to Required Rules and Regulations.
A. Prior to proceeding with any work the contractor shall secure the
necessary permits from all the governing regulatory agencies and municipal
bodies.
B. During the execution of the work, the contractor shall comply with
all applicable rules and regulations of the governing regulatory agencies
and municipal bodies including, but not limited to OSHA, DEP, EPA,
PennDOT, and East Fallowfield Township.
C. In accordance with the provisions of Pennsylvania Act 187, the contractor
shall be responsible for verifying the location of all existing underground
utility installations within the project area. Owners of the respective
utilities involved shall be notified by the contractor at least 48
hours in advance of the commencement of any excavation by the contractor
in the project area. No permits to begin work will be granted until
the requirements of Pennsylvania One Call are met.
5. Copies of this Chapter
18B will be available at the office of the Township Secretary for review. If one wishes to purchase this Part the prices are as follows:
A. Parts 1 through 4, dealing primarily with lateral installation, in
an amount as established from time to time by resolution of the Board
of Supervisors.
B. Parts 5 through 6, dealing primarily with sewer main and lateral
extensions in new development, in an amount as established from time
to time by resolution of the Board of Supervisors.
C. A complete Chapter
18B, in an amount as established from time to time by resolution of the Board of Supervisors.
D. The above prices may be changed by resolution of the Township/Authority.