What is the required drain slope for home drainage systems?

The required drain slope for home drainage systems is typically established to ensure effective drainage while minimizing the risk of clogs and backup. A slope of 0.25 inches per foot (often referred to as a 1:48 slope) is generally recommended for typical home drainage systems, which allows wastewater to flow freely toward the main sewer line without stagnation.

This slope provides an optimal balance between the velocity of the liquid and the deposition of solids, ensuring that waste and wastewater can be efficiently transported without allowing debris to settle. If the slope is too steep, there is a heightened risk of wastewater flowing too rapidly, which can lead to problems with solid waste not being carried along properly. Conversely, a slope that is too shallow can result in pooling and potential clogs.

The other options present different slopes that are either too steep or too shallow for standard home drainage requirements, which can impact the system's overall efficiency and functionality. Thus, the 0.25-inch fall per foot length is the most suitable choice for maintaining an effective home drainage system.