Collection lines need to have a slope of how many inches per 100 feet?

The correct slope for collection lines in wastewater systems is 6 inches per 100 feet. This slope ensures adequate gravity flow, which is essential for preventing blockages and maintaining the efficiency of the sewage system. A slope that is neither too steep nor too flat is crucial for the effective transportation of sewage and wastewater to the treatment facility.

Having a slope of 6 inches per 100 feet strikes a balance between facilitating proper drainage and minimizing the risk of erosion or excessive wear on the piping system. This design standard helps ensure that the wastewater moves consistently, which is important in avoiding issues such as backups or standing water in the lines. Proper installation according to these guidelines not only ensures compliance with regulations but also enhances the long-term reliability of the sewage system.