Absorption trenches are excavated and the bottom filled with aggregate or crushed rock. Either perforated piping, self-supporting arch trenching or box trenching is placed in the trench. The piping is layered over with geotextile fabric, hay or newspaper, several centimetres of sand and then soil.
Also, how deep are septic drain fields?
Secondly, what kind of pipe is used for septic drain field?
Smooth-Walled Pipes The traditional method creating a leach or sewer field for removing effluent water from septic systems is to create a gravel environment into which pipes are inserted. In these systems, high-density polyethylene pipes are used to transport effluent liquids through the field.
What is an engineered septic system?
What is an engineered septic system? An engineered septic system is often used in cases where a conventional septic system cannot be installed. The basic three limiting factors on the placement of the septic system are the ground water table, bedrock, and local health ordinances.
What is a dispersion trench?
DISPERSION TRENCH. What is a dispersion trench? A dispersion trench is a stormwater facility designed to receive stormwater runoff and disperse it evenly through vegetated areas on your project site.