Septic Tank With No Bottom

How to design septic system.

Septic tank with no bottom.

Septic tank consists of top slab bottom slab with pcc bed shear walls around the tank and a top cover opening to check the level of waste water. The tank is connected with two pipes for inlet and outlet. Below are the septic tank design calculations. The solids stay in the tank while the wastewater is discharged to the drainfield for further treatment and dispersal.

A buried watertight tank designated and constructed to receive and partially treat raw domestic sanitary wastewater. The inlet pipe collects the water waste in the septic tank long enough that the solid and liquid waste is separated from each other. We also provide a master index to this topic or you can try the page top or bottom search box as a quick way to find information you need. The bottom of the septic tank outlet pipe is 40 inches above the bottom of the septic tank.

The septic tank outlet should always be a bit lower than the septic tank inlet othewise sewage would run backwards into the septic tank inlet pipe and would clog the system. For clear understanding here we designing a septic tank for 8 people in a house which get filled in 10 days. Keep these materials and substances out of your sewer lines toilets other fixture drains in order to avoid costly clogged sewer piping or to avoid damaging the septic tank or absorption fields. Its job is to hold the wastewater long enough to allow solids to settle down to the bottom forming sludge while the oil and grease floats to the top as scum.

Note that this is 2 inches lower than the bottom of the septic tank inlet opening.