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Exam (elaborations)

Master Massachusetts Plumbing Exam Questions with Latest Update

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  • Course
  • Plumbing
  • Institution
  • Plumbing

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 ...

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  • September 25, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Plumbing
  • Plumbing
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lectknancy
Master Massachusetts Plumbing Exam
Questions with Latest Update
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

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

Back water valve - Answer-Back water valve on outlet pipe on ejector

Minimum GPM on Residential Ejector Pump - Answer-Residential Ejector Pump
minimum is 20 GPM

Sanitary Tee - Answer-No longer called an Esterbrook

No trap required - Answer-No traps required on indirect waste main or branch main

Special Hazardous Waste - Answer-Special Hazardous Wastes are marked yellow and
are 25 feet apart

Max Hot Water - Answer-Residential hot water 130 degree max temp

Max temp into drainage system - Answer-Max temp is 150 degree allowed into drainage
system

Mechanical Pressure Absorbers - Answer-Located at the end of long runs of water pipe

Saddle valves - Answer-Prohibited on water and drainage lines

Sillcock psi - Answer-Minimum PSI at sillcock 10 psi and 5 gpm

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