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Plumbing Information
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A few Items from Lower Gwynedd Township Plumbing Code
Adopted January 1996

  • PVC pipe may only be used for drainage, waste and vent lines above ground.
  • All underground plumbing will be cast iron, gaskets are acceptable.
  • All drainage, waste, vent and water lines will be tested by either air pressure or water.
  • All washing machine and shower waster line will be at least two inches.
  • No "S" traps will be permitted.
Trap Size Fixture Drain Slope Distance
1 1/4" 1 1/4" 1/4" 3' 1/2"
1 1/4" 1 1/2" 1/4" 5'
1 1/2" 1 1/2" 1/4" 5'
1 1/2" 2" 1/4" 8'
2" 2" 1/4" 6'
3" 3" 1/8" 10'
4" 4" 1/8" 12'

Drilling and Notching

Notches in the top or bottom of the joists shall not exceed one-sixth the depth of the joist and shall not be located in the middle of the third span. Where joists are notched on the end for leger, the notch shall exceed one-fourth the joist depth. Cantilevered joists shall not be notched unless the reduced section properties and lumber defects are considered in the design.

Holes

Holes drilled or bored in the joists shall be within two inches of the top or the bottom of the joists, and their diameter shall not exceed one-third the depth of the joist.

Effective April 1, 1999 the permit fee for all sewage ejectors will be $100.

Joseph Lagreca
Plumbing Inspector,
Lower Gwynedd Township