What is the minimum slope required for waste and vent piping in a residential drainage system?
- 1/4 inch per foot
- B1/8 inch per foot
- C1/2 inch per foot
- D3/8 inch per foot
Exam tip
Ensure that the slopes meet the code requirements for proper drainage.
Why A is correct
Section P2803.1 of the 2024 International Residential Code specifies that the minimum slope for waste and vent piping is 1/4 inch per foot.