2026 QUESTION COLLECTION PLUMBING
SAFETY AND STANDARDS MODULE SOLVED
ITEMS AND RESPONSE KEY
◉ 0.5 inches. Answer: Strainer plates on drain lines for rodent
proofing must have openings:
◉ Two pipe size greater than the pipe passing through it. Answer:
Sleeves for pipes passing through foundation walls or under footings
shall be:
◉ 500'. Answer: Travel distance to toilet facilities in
merchantile/occupancies are:
◉ 300'. Answer: Travel distance to toilet facilities in covered malls
are:
◉ 15". Answer: Water closets, bidets or lavatories shall have a
clearance from center of fixture to wall of:
◉ 21". Answer: The required clearance from front of fixture to a
wall, door or other fixture is:
,◉ 3". Answer: Minimum size floor drains for public laundries or
central washing facilities is:
◉ 1 1/2". Answer: Shower waste outlets shall be minimum of:
◉ 3". Answer: Minimum size removable strainer for shower
compartments are:
◉ .25 inches. Answer: Minimum size floor drain strainer opening is:
◉ 4 pounds per square foot. Answer: Sheet lead shall not weigh less
than:
◉ 12 ounces per square foot. Answer: Sheet copper shall not weigh
less than:
◉ 67%. Answer: Urinals shall not be substituted for more than what
percent of water closets?
◉ 120 degrees. Answer: Shower and Tub/Shower valves maximum
hot water setting is:
, ◉ 140 degrees. Answer: Maximum water temperature of a tankless
heater or domestic hot water heater is:
◉ 210 degrees 150 psi. Answer: Maximum setting of a temperature
pressure and relief valve or a combination thereof is:
◉ 160 psi. Answer: Minimum working pressure of a domestic water
service either outside or buried is:
◉ 100 psi @180 degrees. Answer: All hot water distribution piping
and tubing shall have a minimum pressure rating of:
◉ 50 parts per million of chlorine for 24 hours. Answer: Disinfection
of the potable water system uses:
◉ Air gap or air gap device. Answer: The discharge from a reverse
osmosis system enters the drainage system through:
◉ Side by side in the same trench. Answer: Sanitary sewer and
storm drains for the same property can be installed:
◉ Not less than 1". Answer: Molten lead should be poured in one
operation to a depth of: