No unauthorized person(s) shall uncover, make any connections
with or opening into, use, alter or disturb any public sewer or appurtenance
thereof without first obtaining a written permit from the Township
Superintendent.
All costs and expenses incidental to the installation and connection
of the building sewer shall be borne by the owner(s). The owner(s)
shall indemnify the Township from any loss or damage that may directly
or indirectly be occasioned by the installation of the building sewer.
The Township Committee may prohibit any person, firm or corporation
from connecting into the public sewer system of the Township if, in
the opinion of the Township Committee, the sewage or waste to be discharged
into the system would be detrimental to the health, welfare or safety
of the Township or the inhabitants thereof.
A separate and independent building sewer shall be provided
for every building; except that where one building stands at the rear
of another on an interior lot and no private sewer is available or
can be constructed to the rear building through an adjoining alley,
court, yard or driveway, the front building sewer may be extended
to the rear building and the whole considered as one building sewer,
but the Township does not and will not assume any obligation or responsibility
for damage caused by or resulting from any such single connection
aforementioned.
Old building sewers may be used in connection with new buildings
only when they are found, on examination and test by the Township
Superintendent, to meet all requirements of this chapter.
Whenever possible, the building sewer shall be brought to the
building at an elevation below the basement floor. In all buildings
in which any building drain is too low to permit gravity flow to the
public sewer, sanitary sewage carried by such building drain shall
be lifted by an approved means and discharged to the building sewer.
Upon request and where deemed reasonably justified based on sewage
or waste flow generated, cost to connect and public health, welfare
and safety, the Township Committee may waive the requirement of connection
in those cases where the building drain is too low to permit gravity
flow to a public sewer.
No person(s) shall make connection of roof downspouts, foundation
drains, areaway drains or other sources of surface runoff or groundwater
to a building sewer or building drain which, in turn, is connected
directly or indirectly to a public sanitary sewer, unless such connection
is approved by the Township Superintendent for purposes of disposal
of polluted surface drainage.
[Added 4-5-1990 by Ord. No. 350]
A. Manholes.
(1) All manholes are to be precast concrete in accordance with ASTM Designation
No. C478, minimum compressive strength to be 4,000 pounds per square
inch.
(2) Standard manholes are to be four feet in diameter.
(3) External drops are to be constructed where difference in inlet and
outlet inverts is greater than two feet.
(4) Manhole inverts shall be constructed of precast concrete with 10
mils of epoxy coating.
(5) All manhole joints shall be mortared on inside and outside surfaces.
(6) The exteriors of the manholes shall be coated with a bitumastic seal
compound.
(7) Manhole frames and covers shall be:
(a)
Standard: Campbell No. 1202B.
(b)
Locking type: Campbell No. 1486 (easements and/or grassed areas).
(c)
Watertight: Campbell No. 1539A (flood-prone areas).
(8) All covers furnished shall bear the words "Upper Deerfield Township
Sanitary Sewer."
(9) All castings shall be coated inside and out with coal-tar pitch varnish.
(10)
Manhole frames are to be thoroughly bedded in mortar.
(11)
For manhole details, refer to Plate Nos. 1 and 1A, attached
hereto and made a part hereof this chapter.
B. Pipe specifications shall be as follows:
(1) PVC SDR-35, in accordance with ASTM Specifications D3034-74 (latest
edition).
(2) Ductile iron, minimum Class 52, conforming to AWWA C-151, AWWA C-104
and AWWA C-111.
(3) For bedding and backfill detail, see Plate No. 2, attached hereto
and made a part hereof this chapter.
C. Laterals and branch connections.
(1) Pipe material shall match that of the main sewer.
(2) PVC branch connections shall utilize molded fittings.
(3) All vertical risers are to be encased in concrete and constructed
as shown on Plate 3C, attached hereto and made a part hereof this
chapter.
(4) For details, refer to Plate Nos. 3A, 3B and 3C, attached hereto and
made a part hereof this chapter.
D. Testing.
(1) All sewers are to be tested using low-pressure air after installation of the house connections. (For testing procedures, see Subsections
E and
F herein.)
(2) All PVC pipe installed shall be tested for deflection by pulling
a mandrel through the pipe.
(3) The total vertical wall deflection of the PVC sewer pipe shall not
exceed 7.5% of the inside pipe diameter.
(4) Prior to testing, the lines shall be cleaned and flushed.
(5) Final acceptance tests shall be conducted by the contractor and witnessed
by a Township representative following pavement placement.
E. Leakage and testing.
(1) If an inspection of the completed sewer or any part thereof shows
any manholes, pipes or joints which allow the infiltration of water
in a noticeable stream or jet, the defective work or material shall
be replaced or repaired as directed.
(2) Before final acceptance of the sewers, the contractor shall furnish
all equipment and personnel to conduct an acceptable test using low-pressure
air. Tests shall be conducted on all mainline sewers after the installation
of the house connections and all utilities.
(3) The contractor shall first clean and flush all lines, and all debris
flushed out shall be removed at each downstream manhole.
(4) All test plugs, gauges, an air compressor and personnel for conducting
the acceptance test shall be furnished by the contractor. The test
shall be conducted under the supervision of the Township Engineer
or his duly appointed representative.
(5) The section of the line being tested shall be securely plugged at
each manhole. All stoppers shall be adequately braced.
(6) For the acceptance test, air shall be slowly supplied to the plugged
section of the pipe to be tested until the internal air pressure reaches
4.0 pounds per square inch greater than the average back pressure
of any groundwater that may submerge the pipe. At least two minutes
shall be allowed for temperature stabilization before proceeding further.
The back pressure of any groundwater caused by the water head above
the invert of the pipe must be determined by a method approved by
the Township Engineer. This back pressure must be added to the standard
test pressures to compensate for the groundwater effect on the air
test.
(7) The rate of air loss shall then be determined by measuring the time
interval required for the internal pressure to decrease from 3.5 pounds
per square inch to 2.5 pounds per square inch greater than the average
back pressure of any groundwater that may submerge the pipe.
(8) The pipeline shall be considered acceptable when the drop of one
pound per square inch pressure is not less than the holding time listed
in the Air Test Table A herein, attached and made a part hereof this
chapter.
(9) If the pipe installation fails to meet these requirements, the contractor
shall determine at his own expense the source or sources of exfiltration,
and he shall repair or replace all defective materials or workmanship.
The complete pipe installation shall meet the requirement of this
test.
F. Vertical deflection limitations.
(1) The contractor shall also furnish all equipment and personnel to
conduct deflection testing on all PVC pipe installed. The total vertical
wall deflection of the PVC sewer pipe shall not exceed 7.5% of the
inside pipe diameter. Deflection testing shall not be conducted earlier
than seven days after placement and compaction of the backfill.
(2) The vertical deflection shall be checked by manually pulling a "go,
no-go" deflection testing mandrel through the pipe. The mandrel shall
be specifically designed for this purpose, and the contractor shall
submit shop drawings to the Township Engineer detailing the type of
mandrel to be used. The mandrel shall be as manufactured by Armco,
Inc., or equal and shall have the specified accuracy in all positions
of rotations.
(3) The contractor shall conduct all deflection testing in the presence
of the Township Engineer or his duly appointed representative. Should
any pipe section exceed the maximum deflection specified, the contractor
shall undertake any remedial action as required to reduce the deflection
to within that limit.