Plumbing Exam Questions and Answers 100% Solved

Plumbing Exam Questions and Answers 100% Solved Which backflow preventer is not a testable device? a. PVB b. DCAP c. RP d. DCVA - answerB 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 - answerD This type of trap is not permitted in a drainage system? a. S trap standard b. bell trap c. P trap d. drum trap - answerB This is not an approved method for joining cast iron waste pipe? a. mechanical joint b. caulked joint c. compression joint d. welded joint - answerD Confined spaces are hazardous environments because they usually have? a. restricted access and egress b. flood hazards ed room for maneuverability d. explosive atmospheres - answerA 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 - answerD 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 - answerB Where should you locate a fin tube radiator within a room? under a window a window 't matter space permits wner preference - answerA A toilet seat used in a public washroom must be? a. plastic non-permeable type b. round type c. elongated open front type d. cover-less type - answerC A 3⁄4" cold water branch with a developed length of 6.5m could supply how many public use showers? a. 3 b. 4 c. 1 d. 5 - answerB The minimum size for vents serving an oil interceptor are? a. 1 b. 11⁄4 c. 3 d. 4 - answerB When determining the location to install a condensing boiler what must be considered? a. central to heating units b. near a floor drain. wner's preference d. existing vent location - answerB Which is not a hot water heating piping system? a. series loop b. two pipe direct return c. one pipe gravity return d. two pipe reverse return - answerC Medical gas piping is most often joined by? a. silver braze b. compression joints c. lead free solder d. flared joints - answerA What is the minimum length of a trap arm? a. 2 pipe diameters b. 10in c. 14in d. No min - answerA