Plumbing Exam Q&A

Which backflow preventer is not a testable device? a. PVB b. DCAP c. RP d. DCVA - Answer- B A flat roof measuring 20m by 26m with a horizontal wall on one side extended up 6m by 20m. Size the circular rain water leader if the local 15 minute rain fall intensity is 24mm? a. 2 b. 7 c. 9 d. 6 - Answer- D This type of trap is not permitted in a drainage system? a. S trap standard b. bell trap c. P trap d. drum trap - Answer- B This is not an approved method for joining cast iron waste pipe? a. mechanical joint b. caulked joint c. compression joint d. welded joint - Answer- D Confined spaces are hazardous environments because they usually have? a. restricted access and egress b. flood hazards ed room for maneuverability d. explosive atmospheres - Answer- A How would you increase the length of flush on a flushometer? a. turn regulating screw counter clockwise b. remove vacuum breaker c. throttle the stop valved. d. turn regulating screw clockwise - Answer- D A well with a water tight casing requires a minimum standoff distance from a septic system of? a.10m b.15m c. 5m d.25m -