ACTUAL EXAM PAPER 2026
◉ 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:
◉ 0.125 inches. Answer: A lead pour when caulked shall not recede
◉ 100 Feet. Answer: Cleanouts for horizontal drains and building
sewers 6" and smaller shall be located every:
,◉ 400'. Answer: Building sewers 8" and larger manholes must be
installed every:
◉ 2". Answer: Each fixture trap shall have a trap seal of not less
than:
◉ 2. Answer: Minimum number of roof drains in a building 10,000
square feet or less:
◉ 4. Answer: Minimum number of roof drains in a building 10,000
square feet or more:
◉ 3/4". Answer: Minimum size of water service pipe:
◉ Intergral. Answer: A clinical sink has the following trap type
◉ Vacuum Breakers. Answer: Flushometer valves and tanks shall
have:
◉ 30 x 30. Answer: Shower compartments shall not be less than
◉ 2 ". Answer: Commercial food waste grinder shall be connected to
a minimum drain size of:
, ◉ 1.5" deep with a 3/4" drain. Answer: Water heater pan size and
drain size is:
◉ 3" below the installation level. Answer: When rock is encountered
in trenching rock will be removed to a minimum of:
◉ 4'. Answer: Hanger spacing for ABS pipe is:
◉ 10' head. Answer: Water testing of a drainage system requires a:
◉ 2.6 inches of rain per hour. Answer: Sizing of storm drains for
Rhode Island is based on:
◉ 5. Answer: The Board of Appeals consists of how many members?
◉ 85 degrees to 110 degrees. Answer: Tempered water is water
having a temperature range of:
◉ Driven. Answer: A casing is not required with what type of well?
◉ Integrally installed air gap or backflow preventer. Answer:
Backflow for an automatic clothes washer is prevented by: