Summary
Highlights
A blank flange is a pipe flange not drilled for bolt holes. A Reduced Pressure Principle (RPP) backflow assembly consists of two independently acting, internally loaded check valves, a differential pressure relief valve, four properly located tests, and two isolation gate valves.
Plastic pipes must be supported at every 1-meter interval. Trenches should be backfilled with thin layers of clean earth, free from stones, boulders, cinders, or other corrosive materials.
Sacrarium cups, sinks at church altars, and baptistery outlets must discharge directly to the ground and not connect to the sanitary drainage system. Galvanized wrought iron or steel pipes should not be used underground and must be kept at least 152 mm above ground.
Vertical piping can be round, square, or rectangular. Fixture supply pipings are exposed for faculty and maintenance.
Cast iron pipe stacks must be supported at their base and on each floor. The bottom of pipe trenches deeper than an adjacent building's footing and parallel to it must be at least 45 degrees away.
Distribution drain lines and leaching beds should be more than 1.8 meters apart on centers. Waste from holy water and wash water at church altar services must be disposed of directly into the ground, not the sanitary drainage system. No fixture shall be double trapped.
Septic tank covers must be structurally designed to withstand earth loads and support an earth load of not less than 14.4 kPa when maximum coverage does not exceed 0.9 meters. All necessary requirements, including plans and specifications, should be submitted in six sets.
A plumbing permit becomes null and void if work is suspended and abandoned after 120 days from commencement. Inspection requests to the administrative authority must be filed at least three days before the intended inspection date.
An alley is defined as any public space, public park, or thoroughfare between 2 and 3 meters in width dedicated for public use. A manhole is a large opening in a sewer line or plumbing system, sized for a person to gain access for maintenance.
All pipes passing through or under cinders or other corrosive materials must be protected from external corrosion by encasing them with a polyethylene sheath.