ASPE CPD Study Exam 2025 Questions & Answers with 100% Correct Answers | Verified

Front - Back What is the specific weight of water? - 62.4 lbs per cubic foot What happens in a storm and sanitary system after it passes the water test? - A smoke pressure test is recommended with a smoke pressure of 1 in wc to prove the system gas tight. Is an air test acceptable for a storm and sanitary system? - Yes, if a water test is not possible, at a pressure of 5 psi, are tests are impractical and costly What are the testing procedures for the storm and sanitary system? - A water test upon completion of the rough piping and prior to concealment of 10 ft wc minimum (except the topmost 10 feet of pipe), not to exceed 100 ft wc. If system is higher than 100 feet, test plugs must be installed to facilitate testing, rarely are more than 7 stories tested at one time. A peppermint oil test may also be done with 2 oz of peppermint oil and 10 qt boiling water, and searching for peppermint smell at leaks, however it is difficult to pinpoint the leak by this method The maximum length from the vent connection to any future drain outlet is required by code, why, how long is the distance (listed in the book), and what’s the exception? - To prevent a dead end where slime, sludge and fungi can grow, 2 feet, unless the piping must be extended to an accessible location for a cleanout A sanitary tee may be used in the vertical but what may not be used in the vertical and why? - A double sanitary tee because the possibility of flow crossover and excessive pressures when one branch is discharging and the other isn’t are possible What are the slopes of pipe inside the building that correspond to 2 fps velocity? - 1/4 in per foot for 3 in and smaller 1/8 in per foot for larger pipe all elbows, taps, tees etc are tapped at a pitch of 1/4” per foot