What specification must the gravity sewer pipe meet when connecting the sand filter to the drainfield?

The requirement for the gravity sewer pipe to meet ASTM 3034 specifications is crucial for ensuring durability and reliability in a septic system’s design. ASTM 3034 is a standard specification for the material and performance of SDR 35 PVC piping, which is specifically designed to handle wastewater under gravity flow conditions. This type of pipe is characterized by its resistance to chemicals, ability to manage pressure without deformation, and suitability for underground applications, which are essential traits for connecting a sand filter to a drainfield.

Using ASTM 3034 compliant piping helps prevent failures that could lead to leaks or contamination of the surrounding environment. It ensures that the system has the necessary structure to support the weight of soil and other surface loads while maintaining proper flow of effluent from the sand filter to the drainfield.

This specification ultimately contributes to the longevity and effectiveness of the septic system by minimizing the risk of blockages and maintaining an uninterrupted flow of wastewater to treatment areas.