Question

The vent section of the horizontal branch drain shall slope not more than ______?

1) 1/4 inch per foot
2) 1/8 inch per foot
3) 1/2 inch per foot
4) 1 inch per foot

Answer 1

The vent section of the horizontal branch drain should have a maximum slope of 1/4 inch per foot to ensure proper drainage and prevent sewer gases from entering the building.

Step-by-step explanation:

The vent section of the horizontal branch drain should slope at a maximum of 1/4 inch per foot. Correct drainage and venting are key in plumbing to ensure that waste is effectively removed from the premises and to prevent sewer gases from entering the building.

The slope is slight but necessary to ensure proper drainage while preventing water from being siphoned out of traps, which are essential barriers to gas entry.