The building sewer shall be tar-coated extra-heavy cast-iron soil pipe, asbestos cement sewer pipe or PVC heavy-wall pipe (ASTM D3034, SDR-35-40). Any part of the building sewer that is located within 10 feet of a water service pipe shall be constructed of cast-iron soil pipe. Cast iron, or a sleeve, may be required by the Enforcement Officer where the building sewer is located under a driveway or where it is otherwise subject to unusual loadings.
All cast-iron soil pipe used for sewer laterals, sewer risers or other purposes shall be extra-heavy grade (ASTM-A-74) with double tar coating. Gaskets for cast-iron soil pipe shall be made of preformed, properly vulcanized virgin rubber compound containing no scrap or reclaim. Requirements for quality and performance characteristics of positive-seal compression-type molded gaskets shall conform to ASTM C564-68 and shall be for soil pipe manufactured to Commercial Standard CS188-59. Installation of premolded gaskets shall follow the requirements of the pipe manufacturers.
A. 
Asbestos cement sewer pipe, Johns-Manville or equal, shall be manufactured and tested to meet ASTM specification C429, Type II, with the following stipulations: standard lengths of pipe shall be 13 feet and pipe shall be manufactured using the Mandrel Process. Asbestos cement wyes shall have a minimum laying length of 39 inches. Johns-Manville multistrength RTR fittings will be acceptable. Asbestos cement pipe shall be laid in crushed stone or clean grave cradle unless otherwise directed.
B. 
Each pipe joint shall be sealed with an asbestos cement coupling and two solid rubber rings. The pipe ends shall be properly machined to provide permanent automatic end separation.
C. 
The pipe ends, coupling and rubber rings shall be wiped clean immediately before joining the pipe. The rubber rings shall then be inserted into the coupling grooves and smoothed in place. Lubricant shall then be applied to the entire circumference of the pipe end, back to the stop shoulder. The pipe shall then be pushed home using either a bar and a block of wood, or a puller. The ring location shall be checked around the entire circumference of the pipe with a feeler gauge. If a misplaced rubber ring is found, the joint shall be disassembled, and then properly assembled and checked.
D. 
Pipe entering or passing through manholes shall have a length not exceeding three feet three inches beyond the inside face of the manhole.
A. 
Where approved by the Enforcement Officer, PVC pipe shall be ASTM 3034, SDR-35-40 heavy-wall PVC with gasket joints. Installation of PVC pipe and gasket joints shall be in strict compliance with manufacturer's instructions using acceptable lubricant. No glue joints will be permitted.
B. 
Bedding for PVC pipe shall be a minimum of six inches deep and shall consist of coarse sand. The haunching from the bedding to the springline shall also be coarse sand carefully placed to support the pipe along its entire length. The initial backfill to 6 inches above the pipe shall be of select coarse sand. The type of bedding shall be subject to the approval of the Enforcement Officer.
A. 
All pipes shall be laid according to the manufacturer's instructions and true to line and grade. Pipes with bells shall be laid with the bells uphill. Dirt and debris shall be removed from the interior of each length of pipe as it is laid.
B. 
All joints and connections shall be gastight and watertight. No cement joints will be permitted.
C. 
The transition joint between cast-iron pipe and other pipe material shall be made with special adaptors and joint materials approved by the Enforcement Officer.
There shall be a cleanout located just inside the building wall where the sewer pipe comes in, and also a cleanout for every bend greater than 1/16 (22 1/2º) or lateral over 100 feet in length.
Whenever possible, the building sewer shall be brought into the building at an elevation of at least one foot above the basement floor. No building sewer shall be laid parallel to and within three feet of any bearing wall, which might be weakened from it. The sewer depth shall be sufficient to afford protection from frost. The sewer shall be laid at uniform grade and in straight alignment as far as possible, with changes in direction to be made with properly curved pipe and fittings. No 90º angles will be accepted horizontally; two 45º angles are to be used instead.
In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sewage or industrial wastes carried by such drain shall be lifted by approved mechanical means and discharged to the building sewer.