A separate and independent building sewer shall be provided
for every building, except that a single building sewer may be extended
to service a building situated in the rear on the same lot or on an
interior lot that does not abut the public street.
At such time as public sanitary sewer becomes available to a property served by a septic tank, cesspool, seepage pit, underground tank or other private sewage disposal system, as provided in § 384-5, a direct connection shall be made to the public sanitary sewer in compliance with this Part 1, and any septic tanks, cesspools and similar private sewage disposal facilities shall be abandoned and filled with a suitable material, such as sand, crushed stone, gravel, shale or other material approved by the Health Department, within 90 days following such abandonment.
A.
Except as permitted below, the underground water service pipe and
the building drain or building sewer shall be constructed at least
10 feet apart, measured horizontally, and shall be separated by undisturbed
or compacted earth.
B.
New water service pipes may be placed in the same trench with the
building drain and sewer. Preexisting water service pipes shall be
permitted less than 10 feet from the building drain and building sewer,
provided that approval is given by the Sewer Inspector and the following
conditions are met:
(1)
The bottom of the water service pipe at all points shall be at least
12 inches above the top of the sewer line at its highest point.
(2)
The water pipe shall be placed on a solid shelf excavated at one
side of the common trench.
(3)
The number of joints in the water service pipe shall be kept to a
minimum.
(4)
The materials and joints of sewer and water service pipes shall be
installed in such a manner and shall be of such strength and durability
as to prevent the escape of solids, liquids and gases therefrom under
all known adverse conditions, such as corrosion, strains due to temperature
changes, settlement, vibrations and superimposed loads.
Building sewers shall consist of horizontal drainage piping
installed in uniform alignment at uniform slopes not less than 1/8
inch per foot for pipe with a diameter of four inches.
Building sewer pipe material shall be of Class 3300 asbestos-cement
pipe or cast-iron soil pipe ASTM Specification No. A74. Length of
sections should not exceed 10 feet for cast-iron pipe and 6 1/2
feet for asbestos-cement pipe. Other pipe materials for building sewers
shall be in conformance with the National Standard Plumbing Code.
Joints shall be watertight and root-proof. All building sewer pipes
shall be four inches in diameter.
All fittings shall conform to the type of piping material used
in the construction of the building sewer. No ledges, shoulders or
reductions which could retard flow in the piping shall be permitted
in the building sewer. Different types of drainage piping materials
shall be joined either by adapter fittings described in the National
Standard Plumbing Code or by means of an acceptable pre-fabricated
sealing ring or sleeve as specifically approved by the Sewer Inspector.
No building sewer shall be laid within three feet of any bearing
wall. Building sewers shall be installed below recorded frost penetration,
except that the Sewer Inspector may permit installation of cast-iron
pipe at a lesser depth due to ground soil or topographic conditions,
provided that proper and adequate protection is afforded against damage
to the building sewer.
Changes in direction of less than 45° in the building sewer
and building sewer pipe shall be made only with factory-curved pipe
with proper fittings which meet the same standards as straight pipe.
A.
Cleanouts shall not be more than 75 feet apart in horizontal drainage
lines or building sewers.
B.
Cleanouts shall be cast-iron soil pipe ASTM Specification No. A74
or equal, and the top fitting joint shall be leaded. Cleanouts shall
be installed at each change of direction of the drainage system or
building sewer greater than 45°. A cleanout shall be placed in
the building sewer at the point of connection to the service lateral
and brought to the surface with a long turn tee wye. Every cleanout
shall be installed so that the cleanout opens in the direction of
the flow of the building sewer. Cleanout openings shall not be used
for the installation of new fixtures of flood drains. Cleanouts shall
be of the same nominal size as the pipes.
Sewage which cannot be discharged into the sanitary sewer by
gravity flow shall be discharged into a tightly covered and vented
sump from which the contents shall be lifted and discharged into the
building sewer by automatic pumping equipment as described in the
National Standard Plumbing Code.
A.
De-watering shall be required in all cases where groundwater is encountered
to assure dry trench conditions. In all such cases, a minimum of two
well points shall be installed to a depth at least 12 inches below
the sewer lateral prior to excavation. The de-watering requirements
may be waived, in writing, by the Borough Engineer if existing ground
and water conditions warrant such exemption.
B.
Trenches shall be of sufficient width to permit proper installation
of the pipe. Where shoring is required, ample allowance shall be made
in trench width for proper working conditions.
C.
Trenches shall be excavated to a depth such that the bottom of the
trench does not form the bed for the pipe. A four-inch bedding of
three-fourths-inch broken stone shall be backfilled for a minimum
depth of two feet with sand or fine gravel placed in layers of six
inches maximum depth and compacted after each placement. The pipe
shall not be supported on blocks to grade. Where rock is encountered
in trenching, it shall be removed to a point at least three inches
below the grade line of the trench, and the trench shall be backfilled
to grade, with gravel tamped in place so as to provide a uniform bearing
for the pipe between joints. Care shall be exercised to see that the
pipe does not rest on rock at any point, including the joints. If
soft materials of poor bearing qualities are found at the bottom of
the trench, stabilization shall be achieved by over excavation at
least two pipe diameters and bringing up to grade with fine gravel
or crushed stone or a concrete foundation. Such concrete foundation
shall be bedded with sand tamped in place so as to provide a uniform
bearing for the pipe between joints.
Until the crown of the pipe is covered by at least two feet
of tamped earth, considerable care shall be exercised in backfilling
trenches. Loose earth, free of rocks, broken concrete, frozen chunks
and other rubble, shall be carefully placed in the trench in six-inch
layers and tamped in place. Care shall be taken to thoroughly compact
the backfill under and beside the pipe to ensure that the pipe is
properly supported. Backfill shall be placed evenly on both sides
of the pipe and tamped in such manner as to retain proper alignment.
Prior to backfilling over the pipe, the entire building sewer
shall be tested under the supervision of the Sewer Inspector with
water to a pressure not less than 10 feet of head for a period of
not less than 15 minutes. No leakage shall be permitted.
All excavations for building sewer installations shall be adequately
guarded with barricades and lights so as to protect the public from
hazard. Streets and other public property disturbed in the course
of work shall be restored in a manner satisfactory to the Borough.
No trenches shall remain open for a period in excess of 24 hours following
inspection and approval.
A.
For purposes of interpretation, the provisions of this Part 1 are
intended to be in conformity with the standards outlined in the National
Standard Plumbing Code, published by the National Association of Plumbing-Heating-Cooling
Contractors.
B.
All building sewers, building drains and plumbing fixtures shall
conform to all other applicable provisions in the National Standard
Plumbing Code not otherwise outlined in this Part 1.
[Added 4-16-2007 by Ord. No. 12-07, effective 5-6-2007]
A.
No person
shall discharge or cause to be discharged through an illicit connection
to the municipal separate storm sewer system operated by the Borough
of Lincoln Park any domestic sewage, non-contact cooling water, process
wastewater, or other industrial waste (other than stormwater.)
B.
This section
shall be enforced by the Division of Water and Sewers or the Police
Department of the Borough of Lincoln Park.
