Sanitation, Plumbing Design and Installation (Part 4) | Master Plumber Licensure Exam Refresher

Shower Receptor Construction and Materials00:00:24

Shower receptors built directly on the ground must be acid-resistant and have a firm bed. For those built above ground, the subfloor and rough side of walls should extend at least 3 inches or 76 mm above the top of the finished dam. Lining materials for shower compartments must be pitched at a slope of 20 mm per meter to weep holes.

Plumbing Material Specifications00:02:06

All folds, laps, and reinforcing webbing in shower compartments must extend at least 101 mm in all directions from the corner. Lead and copper sub-pans or linings need to be insulated from other conducting substances. Lead pans should weigh at least 19.6 kg per square meter, while copper pans should be at least 24 B and S5 mm thick. Joints in lead pans must be burned.

Whirlpool Bathtubs and Plumbing Devices00:03:57

Whirlpool bathtubs require a removable panel for access to the pump and their pump and circulating piping must be self-draining to minimize water retention. An ABS stack can be tested one hour after the last joint is made. A drum trap is classified as a large-diameter water seal device. A cleanout is located in an accessible area on a sanitary waste line, attaching to the end of the waste pipe in the opposite direction of flow.

Plumbing System Maintenance and Testing00:05:40

The owner's agent is responsible for maintaining the plumbing and drainage system. An air test should be used when there is reason to believe a drainage or plumbing system has become defective. A gooseneck is a flexible pipe part that curves. Zinc is the principal alloy found in brass, a common copper alloy used in plumbing. Water test procedures should ensure the system is tight at all points, with the primary goal being a fully sealed system.