MASTER PLUMBING 2026 CORE EXAM TEST QUESTIONS
AND SOLUTIONS RATED A+
✔✔recommended size of MWSS for service pipe in 2 storey residential
✔✔3/4 - ✔✔minimum water supply size for flush valve urinal
✔✔1 - ✔✔minimum water supply pipe diameter size " for flushometer valve water closet
✔✔1/2 - ✔✔minimum water supply pipe diameter size " for water closet without
flushometer valve
✔✔potability - ✔✔first steps in selecting water source
✔✔residence - ✔✔class 1 type occupancy water supply
✔✔restricted use - ✔✔class 2 type occupancy water supply
✔✔unrestricted use - ✔✔class 3 type occupancy water supply
✔✔permanent temporary - ✔✔what makes up total hardness
✔✔greensand filtraiton - ✔✔treatment of wells for acidity
✔✔marblestone filtration - ✔✔treatment for waste water
✔✔whitesand filtration - ✔✔treatment for swimming pool treatment
✔✔algae - ✔✔cause of objectionable tastes and odor of water
✔✔service pipe - ✔✔pipe from the street water main to the building served
✔✔GV WM CV - ✔✔order of valves for water connection
✔✔building supply pipe - ✔✔pipe carrying potable water from the water meter to a
building or other point of use or distribution
✔✔fixture supply - ✔✔water supply pipe connecting the fixture with the fixture branch
✔✔unit vent - ✔✔vent installed so that one vent pipe serves two traps
✔✔circuit vent - ✔✔a group vent which starts infront of the extreme fixture connection
on a horizontal branch and connects to the vent stack
, ✔✔looped vent - ✔✔vent used for islands and lavatories away from the wall and vent
branch
✔✔pump circuit system - ✔✔system used to produce a more efficient circulation of hot
water to the upper floor levels of a multi storey building
circulation of hot water by means of mechanical device
✔✔zdownfeed & gravity return system - ✔✔system of where hot water rises on the the
highest point of the plumbing system and travels to the fixture via gravity
✔✔relief vent - ✔✔A vent to relieve the pressure ahead of moving effluent in a
horizontal fixture branch.
✔✔yoke vent - ✔✔A pipe CONNECTING UPWARD from a soil or waste stack to a vent
stack for the purpose of preventing pressure changes in the stack
✔✔5 - ✔✔yoke vent is required for every ___ floors
✔✔.6 - ✔✔house sewer is part of the plumbing system which extends ____ m from the
foundation of the wall of the building
✔✔invert - ✔✔lowest part of the inside face of any pipe
✔✔crown - ✔✔highest part of the inside face of any pipe
✔✔spring line - ✔✔the midpoint level of a pipe
✔✔clevice - ✔✔pipe hanger for pipes with pressure
shape: ---o---
✔✔bending pin - ✔✔tool used for straightening or bending lead pipe
✔✔tailpiece - ✔✔pipe or tubing that connects the outlet of a plumbing fixture to a trap
✔✔slip joint - ✔✔adjustable tubing connection consisting of a compression nut, friction
ring, and compression washer
✔✔building subdrain - ✔✔that portion of an underground system, which cannot drain by
gravity into the building sewer
✔✔subsoil drain - ✔✔an underground drainpipe that receives only sub-surface or
seepage water and convey it to a sump for disposal by gravity flow or by lift pump
AND SOLUTIONS RATED A+
✔✔recommended size of MWSS for service pipe in 2 storey residential
✔✔3/4 - ✔✔minimum water supply size for flush valve urinal
✔✔1 - ✔✔minimum water supply pipe diameter size " for flushometer valve water closet
✔✔1/2 - ✔✔minimum water supply pipe diameter size " for water closet without
flushometer valve
✔✔potability - ✔✔first steps in selecting water source
✔✔residence - ✔✔class 1 type occupancy water supply
✔✔restricted use - ✔✔class 2 type occupancy water supply
✔✔unrestricted use - ✔✔class 3 type occupancy water supply
✔✔permanent temporary - ✔✔what makes up total hardness
✔✔greensand filtraiton - ✔✔treatment of wells for acidity
✔✔marblestone filtration - ✔✔treatment for waste water
✔✔whitesand filtration - ✔✔treatment for swimming pool treatment
✔✔algae - ✔✔cause of objectionable tastes and odor of water
✔✔service pipe - ✔✔pipe from the street water main to the building served
✔✔GV WM CV - ✔✔order of valves for water connection
✔✔building supply pipe - ✔✔pipe carrying potable water from the water meter to a
building or other point of use or distribution
✔✔fixture supply - ✔✔water supply pipe connecting the fixture with the fixture branch
✔✔unit vent - ✔✔vent installed so that one vent pipe serves two traps
✔✔circuit vent - ✔✔a group vent which starts infront of the extreme fixture connection
on a horizontal branch and connects to the vent stack
, ✔✔looped vent - ✔✔vent used for islands and lavatories away from the wall and vent
branch
✔✔pump circuit system - ✔✔system used to produce a more efficient circulation of hot
water to the upper floor levels of a multi storey building
circulation of hot water by means of mechanical device
✔✔zdownfeed & gravity return system - ✔✔system of where hot water rises on the the
highest point of the plumbing system and travels to the fixture via gravity
✔✔relief vent - ✔✔A vent to relieve the pressure ahead of moving effluent in a
horizontal fixture branch.
✔✔yoke vent - ✔✔A pipe CONNECTING UPWARD from a soil or waste stack to a vent
stack for the purpose of preventing pressure changes in the stack
✔✔5 - ✔✔yoke vent is required for every ___ floors
✔✔.6 - ✔✔house sewer is part of the plumbing system which extends ____ m from the
foundation of the wall of the building
✔✔invert - ✔✔lowest part of the inside face of any pipe
✔✔crown - ✔✔highest part of the inside face of any pipe
✔✔spring line - ✔✔the midpoint level of a pipe
✔✔clevice - ✔✔pipe hanger for pipes with pressure
shape: ---o---
✔✔bending pin - ✔✔tool used for straightening or bending lead pipe
✔✔tailpiece - ✔✔pipe or tubing that connects the outlet of a plumbing fixture to a trap
✔✔slip joint - ✔✔adjustable tubing connection consisting of a compression nut, friction
ring, and compression washer
✔✔building subdrain - ✔✔that portion of an underground system, which cannot drain by
gravity into the building sewer
✔✔subsoil drain - ✔✔an underground drainpipe that receives only sub-surface or
seepage water and convey it to a sump for disposal by gravity flow or by lift pump
