What is the minimum slope required for the waste and vent piping in a residential building to ensure proper drainage?
- A1/4 inch per foot
- 1/8 inch per foot
- C1/2 inch per foot
- D3/16 inch per foot
Exam tip
Always verify that the slope of the waste and vent piping meets the code requirements to prevent future issues.
Why B is correct
According to Section R310.5 of the 2024 International Residential Code, the minimum slope for waste and vent piping is 1/8 inch per foot. This slope ensures that waste flows properly through the pipes and prevents clogs.