Plumbing Questions and Answers with Complete and Verified Solutions

Plumbing Questions and Answers with Complete and Verified Solutions Building sewers shall be tested by completely filling the sewer with water from the ______ A. Lowest to highest point B. Lowest to at least 5' head C. Lowest to at least 10' head D. Lowest to at least ground level C. Lowest to at least 10' head Hot and cold water piping may be tested with ____ A. 40 psi-150 psi water for 10 minutes B. 35 psi for at least 15 minutes C. 50 psi or the working pressure of the water in the system for at least 15 minutes D. 100 psi of air for at least 10 minutes C. 50 psi or the working pressure of the water in the system for at least 15 minutes The required clearance in front of a 3" cleanout is ____ A. 12" B. 18" C. 24" D. 36" B. 18" A stack as defined in the code is ____ A. Main vent B. Any vertical vent C. The vertical main of a soil, waste, or vent piping which extends one or stories D. Horizontal main of a soil, waste, or vent stack C. The vertical main of a soil, waste, or vent piping which extends one or stories Above ground PEX piping installed horizontally shall be supported at intervals not to exceed _________. A. Depends on the pipe size B. 24" C. 32" D. 36" C. 32" The minimum vertical length for a gravity type venting system serving a fuel fired water hear is _________. A. 4' B. 5' C. 10' D. Based on the Btu rating B. 5' The maximum horizontal distance of a trap arm is measure from the inner edge of the vent to the _____ A. Weir of the trap B. Dip of the rap C. Inlet of the trap D. None of the above A. Weir of the trap Sleeves shall be provided to protect piping ____ A. Passing through floors or concrete walls B. Passing through concrete and masonry walls C. Passing through wood or concrete walls D. Passing through all locations listed above B. Passing through concrete and masonry walls The drain connecting the compartments of a set of fixtures to its trap is called a/an _____ A. Continuous waste B. Combination waste and vent C. Indirect waste D. None of the above A. Continuous waste A device to prevent backflow in to the potable water system is called a _____ A. Backflow connection B. Backflow preventer C. Backwater preventer D. Both A and B B. Backflow preventer Copper