Plumbing Test 1Questions and Answers

Plumbing Test 1Questions and Answers Which of the following traps are permitted by special permission? A. bell B. S C. drum D. crown vented trap -Answer-C A roof mounted ari conditioner unit is condensing at the rate of 5 GPM. How much DFU? A. 4 B. 5 C. 10 D. 12 -Answer-B According to the International Plumbing Code, when plastic piping is installed in a concealed location and passing through a stud joist or rafter, the piping may not pass any closer than ___ inches from the edge of the wood member. A. 3/4 B. 1 C. 1 1/4 D. 1 1/2 -Answer-D The measured length along the centerline of the pip and its fittings is? A. true length B. measured length C. developed length D. actual length -Answer-C What is the approximated number of threads for a 2 1/2" schedule 40 pipe which will be used in a fuel gas piping system? A. 9 B. 10 C. 11 D. 12 -Answer-D .43 PSI = How many Feet of Head? A. 1 B. 2.31 C. 4.4 D. 43 -Answer-A What is the PSI at the bottom of the drainage pipe if the test for a 4" drainage system is 30' of head? A. 15 psi B. 14 psi C. 13 psi D. 12 psi -Answer-D PSI = feet of head x .433 30 (feet of head) x .433 = 12.99 When gas piping is installed through wood studs and is less than 1 1/4" from the nearest end of the stud, the point of passage shall be protected with a face plate not less than ___. A. 1/32 B. 1/16 C. 3/32 D. 1/8 -Answer-B What is the corresponding feet of head in a sprinkler system whose pressure is 40 PSI? A. 93 B. 112 C. 117 D. 116 -Answer-A Feet of head is 2.31 x PSI 40 x 2.325= 93 A multimeter would test for which of the following? A. current B. CFM C. CFH D. gallons per hour -Answer-A How is the vent from an indirect waste pipe run to the outside? A. separately, unconnected B. within an approved partition C. vertically only D. may be jointed to another vent prior to exiting the roof as long as the joining is above the ceiling -Answer-A If the claim be for the planting of any trees, vines, plants or hedge, the lien must be filed within 4 months of the ___. A. planting B. purchase C. contract signing D. delivery -Answer-A Which of the following codes has been adopted as the plumbing code for Oklahoma? A. UPC B. IPC C. 1997 UPC D. 1997 IPC -Answer-D Which of the following conditions best describes corrosion protection for fuel gas piping which is buried in the ground? I. Protected in an approved manner such as galvanizing. II. Machine wrapped with approved coating. A. I B. II C. Both I & II D. Neither I nor II -Answer-B What is the center line rough in dimension of urinals? A. 36 inches B. 30 inches C. 20 inches D. 24 inches -Answer-B What is the hydrostatic pressure test for a new drainage system? A. 15' of head for 15 minutes B. 10' of head for 15 minutes C. 10' of head for 30 minutes D. 15' of head for 30 minutes -Answer-B How high above a fixture must the critical level (c/l) of the vacuum breaker be? A. 6" B. 4" C. 2" D. 3" -Answer-A Where is the critical level (c/l) on vacuum breaker when there is no marking? A. the top B. the bottom C. 6" above the top D. 6" below the bottom -Answer-B A 3" water main is standing full of water after a pressure test. The guage ready at the base is: A. 23.1 psi B. 28.19 psi C. 42 psi D. 18.05 psi ASSUME the main is standing with 42' of head. -Ans