Master Plumber Exam 1 Questions and Answers

Master Plumber Exam 1 Questions and Answers Sewage Ejector -answerType of pump that discharges waste in the sump pit and transfers the waste to the house drain. (Max Fajardo) 503 mm -answerMinimum dimension of a septic tank manhole. Industrial drain -answerdrain that discharges objectionable waste such as acids and other chemicals from industrial equipment . 75 mm -answerMinimum diameter of pipe of any water closet. 3 -answerMaximum number of water closets able to discharge into a shared 75mm diameter horizontal soil branch Combination Sewer -answerType of sewer that discharges both storm water and sewage from households, rendered obsolete due to the health hazards it poses Septic Tank -answerAirtight receptacle used to expedite the decomposition of elements contained in raw sewage, usually located 1.5 meters from the property line and 15.2 meters from the water main or any potable water source. It is comprised of two chambers that contain anaerobic bacteria that break down wastes. Sedimentation -answerTerm defined as the settling down or separation of solid matter suspended in a liquid. 1% -answerMinimum slope or grade (in %) permitted with 100mm (4'') pipes. Scum -answerLighter organic solid particles found in sewage, cesspools and septic tanks, found floating on the liquid. Sludge -answerTerm defined as the organic particles that have settled down in septic tanks, cesspools or sewage. 900 mm -answerMinimum WIDTH of a septic tank for residential dwellings. (mm) 1500 mm -answerMinimum LENGTH of a septic tank for residential dwellings. (mm) 1200 mm -answerMinimum DEPTH of a septic tank for residential dwellings. (mm) Hair -answerLeading cause of pipe clogs in waste and soil pipes. Drainage, Waste and Vent -answerDefinition of DWV Acrylonitrile butadiene styrene -answerDefinition of ABS Oval -answerCross sectional shape of the interior of Polybutene pipes (PB). 38 mm -answerMinimum size of cleanouts. (mm) Corporation Stop -answerType of valve found in the service main, used as a control of the water service and shut off valve when service is disconnected. Check Valve -answerType of valve used to prevent backflow or reversal of flow of water, usually found after the water meter. Union Patente -answerFitting used to describe the connection of the service pipe and water meter. Usually used as the demarcation between the property of the water service and water supply pipe system residential dwelling or building. Booster Pump / Pneumatic Pump -answerType of pump used to distribute water within a building or residence, when an upfeed system cannot provide adequate pressure to supply fixtures with potable water. Durham System -answerType of piping system that is characterized by threading and connecting cast iron pipes in the building. Teflon Tape -answerMaterial used to fuse joints or connections of GI pipes. Caulking -answerProcess of joining the joints and connections of cast iron pipes. Motor Oil -answerType of oil used when threading GI pipes. Centrifugal Pump -answerType of pump used for high-rise or mid-rise buildings, when booster or piston pumps are unavailable or inadequate. Piston Pump -answerType of pump used for residential or low-rise buildings, and comes in single action, double action or twin. Drum Trap -answerType of trap that is installed only in bathtubs. Flushometer Valve -answerType of flushing valve used in commercial water closets, usually installed with a pressure tank that expels air pressure and a set amount of water when flushing. 14 -answerNumber of teeth per inch in a hacksaw blade used to cut GI pipes. Looped Vent -answerType of vent used in an island counter type kitchen sink. Trap Seal -answerMaximum vertical depth of liquid that a trap can contain. Sump Pit -answerType of detention pit usually found in basements, used to gather and discharge waste water, sometimes with the help of a pump. Standpipe -answerVertical pipe that is used for the storage of water, usually contains pressure and is used for fire suppression. Return Bend -answerType of pipe with a 180 degree bend. 2 -answerWater Supply Fixture unit of a bath tub. 2 -answerWater Supply Fixture unit of a shower 38 mm -answerDiameter of pipe used for bath tub drum traps. (Max Fajardo, p. 172) (mm) 38 mm -answerDiameter of pipe used for wash basins / lavatories. (Max Fajardo, p. 172) (mm) 75 mm -answerDiameter of pipe used for water closets. (Max Fajardo, p. 172) (mm) 50 mm -answerDiameter of pipe used for floor drains. (Max Fajardo, p. 172) (mm) Bleeder -answerType of connection found in a looped vent, connecting the looped vent pipe to the waste pipe. 50% -answerPercentage required of liquid flow for a waste or soil pipe to have adequate drainage or discharge. Circuit Vent -answerType of vent that connects a battery of fixtures to a stack vent. Privy -answerA concrete sealed vault with a wooden shelter constructed for the collection of raw sewage. Cesspool -answerHole in the ground curbed with stones, bricks, CHB or other materials to allow raw contaminated sewage to leach into the ground. Trap Seal Loss -answerA common problem in traps due to inadequate ventilation. Unit Vent -answerType of vent that is shared by two fixtures of the same type. Solvent System -answerType of system used in plumbing that eliminates the vent stack, relying of downward pressure and suction. The waste and sewage discharges f