What should the spacing be for openings in perforated pipe used in gravel systems?

In gravel systems, perforated pipe is crucial for effective drainage and effluent distribution. The correct spacing for openings in perforated pipe is 3-5 inches. This range allows for optimal flow and prevents clogging while ensuring that the effluent can effectively permeate the surrounding gravel.

When the openings are spaced too closely, there is a risk of sediment build-up, which can inhibit the flow of liquid and reduce the overall efficiency of the system. Conversely, spacing them too far apart may lead to uneven distribution of effluent, causing areas of saturation and underperformance. By adhering to the recommended spacing of 3-5 inches, you can promote consistent drainage and maintain the longevity and effectiveness of the septic system.