Plumbing License Practice Test Welcome to your Plumbing License Practice Quiz, please enter your email address to begin Which of the following are not allowed for use when changing a 3" drain's direction horizontal to horizontal?Add description here! Long sweep Eighth bend Sixth bend quarter bend A fixture with a continuous flow of 2 gpm has the equivalent of _______ drainage fixture units. 4 3 2 1 An eight inch stack is required to drain 2400 drainage fixture units form a four story building. Since the fourth story has only 58 drainage fixture units, the stack serving that story may be reduced to ______ inches. 2 2 1/2 3 4 A gas fired water heater, listed and labeled as resistant to flammable vapor ignition, may be installed... directly on a garage floor 10 inches above the garage floor 18 inches above the garage floor any of the above The velocity of 18 gpm flowing in a 3/4" smooth pipe is about ______ feet per second 1.25 2 5 10 When sizing a piping system, the minimum flow rate for a shower is ______ gpm. 1 2 2.5 3 How many eight bends are required to make a 45 degree turn? 1 2 3 4 All plastic pipe fittings and components shall be third party certified as conforming to ________? ANSI/NSF 14 ASSE1022 CAN/CSA-B64.2 ASME A 112.1.2 Using 150 feet of 3/4" smooth pipe type L, what is the approximate pressure drop if 10 gpm is to be delivered? 5 psi 10 psi 15 psi 20 psi The measured length of a sump vent is 75 feet. What is the assumed developed length if allowances for entrance losses, friction dur to fittings, changes indirection and diameter are not available. 112.5 feet 75 feet 137.5 feet 150 feet The diameter of a stack vent with a developed length of 78 feet and connected to a 3 inch waste stack handling 27 drainage fixture units is _____ inches 1-1/4 1-1/2 2 3 When selecting a sleeve for a 2 inch pipe passing through a foundation wall, the sleeve must be ____ diameter. 3 4 5 6 All indirect waste piping that exceed ____ feet in developed length, measured horizontally, shall be trapped. 2 3 4 6 A drainage branch pipe extending laterally from a soil or waste stack, that received the discharge from two or more fixtures is called a __________? fixture drain fixture branch drainage fixture unit battery A building requiring 5 drinking fountains may substitute a maximum of _____ fountains with bottled water dispensers. 1 2 3 4 A bathroom requiring 5 water closets may substitute _____ water closets with urinals. 1 2 3 4 Piping that passes through concrete walls shall be protected by a sleeve with a minimum thickness of ______. .10 inch .25 inch .025 inch .010 inch The vertical distance from the fixture outlet to the trap weir shall not exceed ______ inches. 18 24 30 36 The area to be serviced by an oil separator in a service station is 300 square ft. What is the minimum of the oil separator? 4 cubic feet 6 cubic feet 8 cubic feet 10 cubic feet Showers washer outlets shall have a removable strainer, not less than _____ inches in diameter. .025 3 2.5 2 Time is Up! By Innovative Plumbing|December 8th, 2020|