Septic Tank With No Bottom

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

Septic tank with no bottom.

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. 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. The inlet pipe collects the water waste in the septic tank long enough that the solid and liquid waste is separated from each other. A buried watertight tank designated and constructed to receive and partially treat raw domestic sanitary wastewater.

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. Compartments and a t shaped outlet prevent the sludge and scum from leaving the. The bottom of the septic tank outlet pipe is 40 inches above the bottom of the septic tank. Below are the septic tank design calculations.

How to design septic system. 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. The solids stay in the tank while the wastewater is discharged to the drainfield for further treatment and dispersal. For clear understanding here we designing a septic tank for 8 people in a house which get filled in 10 days.

The tank is connected with two pipes for inlet and outlet.