What typical diameter do the laterals in a pressure distribution system usually have?

The typical diameter for laterals in a pressure distribution system is generally in the range of 1 to 2 inches. This size is ideal for ensuring proper hydraulic flow and distribution of effluent throughout the system. The smaller diameter allows for easier installation and maintenance, while still being adequate to deliver the necessary volume of wastewater for treatment in the soil.

This size also helps prevent clogging, as larger pipes could lead to slower flow rates and potentially allow solids to settle, which is not desirable in a pressure distribution system. It is important for laterals to be effective in dispersing effluent uniformly across the leaching area to enhance treatment and minimize the risk of groundwater contamination.

In the context of other diameters listed, larger sizes would not be practical or necessary for lateral distribution, as they could exceed the requirements for effective treatment and complicate the design of the system.