Master Massachusetts Plumbing Questions With Complete Solutions
4 pounds - (ANSWER)Sheet lead for safe pan
3 pounds - (ANSWER)Lead roof flange
1/8" thick - (ANSWER)Brass toilet flange
1/4 " thick - (ANSWER)Cast iron flange
Are cast iron cleanout plugs allowed - (ANSWER)No
Rodding cleanout distance on 3" and bigger - (ANSWER)Clearance is 18"
Rodding cleanout distance on 2" or less - (ANSWER)Clearance is 12"
CPVC or Pex piping allowed for Hot Water Heaters or Boiler - (ANSWER)No closer than 24"
0% lead - (ANSWER)Lead free solder should contain 0%
3% lead fixture - (ANSWER)Max lead in a faucet fixture
Why use rector seal - (ANSWER)Lubricates and creates water tight seal
Transition from abs - (ANSWER)PVC to ABS connections to be made via male to female adapter
24" - (ANSWER)Fixture outlet to trap weir not to exceed 24"
Combination Fixtures - (ANSWER)Max 30" apart and no more than 6in deeper than another
, Master Massachusetts Plumbing Questions With Complete Solutions
Prohibited traps - (ANSWER)Bell, crown vented, full "s" traps- *Drum Traps are allowed!
Min trap seal - (ANSWER)Min trap seal is 2-4 "
Deadend Pipe - (ANSWER)2' or greater
10" underground pipe or larger - (ANSWER)Manhole @ change of size, alignment, grade or elevation
Grease trap - (ANSWER)2 pounds per gpm
Commercial Laundry - (ANSWER)Commercial Laundry drain must handle 75% of total washing machines
Shower Stall - (ANSWER)900 Sq in or 30 measured as the side of a rectangle (interior dimensions).
Shower Pans - (ANSWER)Shower Pans must be turned up on all sides at least above the threashold
Shower temperature - (ANSWER)Shower head not exceed 110 or 112
Trapping commercial food grinder - (ANSWER)Commercial food waste grinder trapped separately
Washing Machine standpipe - (ANSWER)Washing machine stand pipe min is 30" above the base of
machine and 18-30" above trap and discharge through an air break
Sacrium - (ANSWER)Sacrium drains in a dry well
1 DFU - (ANSWER)Equals 7.5 GPM
4 pounds - (ANSWER)Sheet lead for safe pan
3 pounds - (ANSWER)Lead roof flange
1/8" thick - (ANSWER)Brass toilet flange
1/4 " thick - (ANSWER)Cast iron flange
Are cast iron cleanout plugs allowed - (ANSWER)No
Rodding cleanout distance on 3" and bigger - (ANSWER)Clearance is 18"
Rodding cleanout distance on 2" or less - (ANSWER)Clearance is 12"
CPVC or Pex piping allowed for Hot Water Heaters or Boiler - (ANSWER)No closer than 24"
0% lead - (ANSWER)Lead free solder should contain 0%
3% lead fixture - (ANSWER)Max lead in a faucet fixture
Why use rector seal - (ANSWER)Lubricates and creates water tight seal
Transition from abs - (ANSWER)PVC to ABS connections to be made via male to female adapter
24" - (ANSWER)Fixture outlet to trap weir not to exceed 24"
Combination Fixtures - (ANSWER)Max 30" apart and no more than 6in deeper than another
, Master Massachusetts Plumbing Questions With Complete Solutions
Prohibited traps - (ANSWER)Bell, crown vented, full "s" traps- *Drum Traps are allowed!
Min trap seal - (ANSWER)Min trap seal is 2-4 "
Deadend Pipe - (ANSWER)2' or greater
10" underground pipe or larger - (ANSWER)Manhole @ change of size, alignment, grade or elevation
Grease trap - (ANSWER)2 pounds per gpm
Commercial Laundry - (ANSWER)Commercial Laundry drain must handle 75% of total washing machines
Shower Stall - (ANSWER)900 Sq in or 30 measured as the side of a rectangle (interior dimensions).
Shower Pans - (ANSWER)Shower Pans must be turned up on all sides at least above the threashold
Shower temperature - (ANSWER)Shower head not exceed 110 or 112
Trapping commercial food grinder - (ANSWER)Commercial food waste grinder trapped separately
Washing Machine standpipe - (ANSWER)Washing machine stand pipe min is 30" above the base of
machine and 18-30" above trap and discharge through an air break
Sacrium - (ANSWER)Sacrium drains in a dry well
1 DFU - (ANSWER)Equals 7.5 GPM
