What is the minimum slope required for the sewer line from the house?

The minimum slope required for the sewer line from the house is 1/8 inch per foot. This is essential because a sufficient slope ensures that wastewater can flow efficiently through the sewer line by utilizing gravity. If the slope is too flat, it may lead to blockages and accumulation of solids within the pipe, which can cause sewage to back up into the home or create other plumbing issues.

The chosen slope of 1/8 inch per foot is commonly recommended for residential plumbing systems because it provides a balance between effective drainage and the integrity of the pipe system. Steeper slopes, while potentially more effective for faster movement of fluids, can cause the solids to be carried too quickly while leaving water behind, which could result in clogs further down the line. Thus, the recommended minimum of 1/8 inch per foot supports proper flow and maintenance of the system over time.