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P-312.2 Drainage and vent water test. A water test shall be applied to the drainage system either in its entirety or in sections. If tested in sections, not more than 30 feet in height on any one system shall be tested at any one time. If applied to the entire system, all openings in the piping shall be tightly closed, except the highest opening, and the system shall be filled with water to the point of overflow. If the system is tested in sections, each opening shall be tightly plugged (except the highest opening of the water) but no section (except the building (house) drain and its connected yard and area drains) shall be tested with less than a 10-foot (3048 mm) head of water. except the highest openings of the section under test, and each section shall be filled with water, but sections shall not be tested with less than a 10-foot (3048 mm) head of water. In testing successive sections above the building (house) drain, at least the upper 10 feet of the next preceding section shall be re-tested so that no joint or pipe in the building (except the building (house) drain and the uppermost 10 feet of the system) shall have been submitted to a test of less than a 10-foot head of water. The water shall be kept in the system or in the portion under test for at least 15 minutes before inspection starts; the system shall then be tight at all points.
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P-312.6 Gravity sewer test. Gravity sewer tests shall consist of plugging the end of the building sewer at the curb line point of connection with the public sewer, filling the building sewer with water, testing with not less than a 10- foot (3048 mm) head of water and maintaining such pressure for 15 minutes.
P-312.6.1 Separate test. The building (house) drain and yard area drains, including all piping to a height of 10 feet above the highest point of the building (house) drain, shall be tested separately. All traps, pipe fittings and joints shall be exposed to view when the test is made. Water shall be introduced into the system in the quantity deemed necessary by the Department. To be approved, the flow of water through the system shall be unobstructed, and there shall be no leakage through any pipe, joint, trap, or fitting and maintaining such pressure for 15 minutes.
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P-312.11 Completion of work. After tests have been made and approved by the inspector, covering, insulation, coating or painting of the drain, vent and water piping shall be permitted. Decals on soil, waste, and vent piping, and hot, cold and return water piping shall be installed every 10 feet on covered and uncovered lines.
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