Residential Septic Tank Drain Field Layout

A conventional septic system is typically installed at a single family home or small business.

Residential septic tank drain field layout.

The gravel stone drainfield is a design that has existed for decades. Design guide for septic drainfields. If placed in an area with good ground absorption a drain field can last up to 10 years. With this design effluent is piped from the septic tank to a shallow underground trench of stone or gravel.

Code approved conventional septic drainfields or leach fields are described here design criteria for septic drainfields and septic absorption bed systems soakaway fields table of septic drainfield trench lengths determined by soil percolation rate and daily wastewater input flow materials to be used for drainfields gravel guidelines for use of seepage pits in septic systems. A typical septic system consists of a septic tank and a drainfield or soil absorption field. Soil based systems discharge the liquid known as effluent from the septic tank into a series of perforated pipes buried in a. Trench line specs detailed specifications leach fields gravelless systems deep trench systems shallow trench systems cut and fill systems absorption bed systems.

Unfortunately drain fields also known as leach fields do not last that long. Step 1 determine the size. The construction details including the layout of all sewers outside of the home the location and depth of all tanks the routing and depth of pressurized effluent lines and other system parts such as the drain field and any additional atus must match the septic system plans as approved by the local county health department. When you design your drain field there are a few things to keep in mind.

Septic tanks last from 15 to 30 years. Leach field or soakaway field size requirements for these septic system designs. The name refers to the construction of the drainfield. Building a septic drain field is time consuming but pays off in the long run.

Like your septic tank the size of the drain field will depend on the square footage of your home the size of your family and how much water you typically use. A septic drain field is a vital part of any septic system. An improperly designed drain field will do nothing but cause huge problems with the entire system. The septic tank digests organic matter and separates floatable matter e g oils and grease and solids from the wastewater.

The type of septic system whether it is a type 1 type 2 or type 3 system will affect the quality of the effluent flowing into the drain field from the septic tank. Because cleaner effluent will require less treatment in the drain field a drain field for a type 2 system can be smaller than that processing effluent from a type 1 system and a. The soil should. The drain field also called the leach field performs more than half the job in a conventional residential septic system.

Field size dimensions depth layout suggestions.