How To Maintain A Septic Tank With Concrete Block?

A septic tank is the tank that a building or home uses to hold solid garbage. Homes often have septic tanks, which are also called sewage collection systems, to handle small amounts of sewage. This is common in places that don’t have access to major sewer pipes or a good drainage system.

Within 1.5 to 1.8 meters below the ground, this tank is generally put in place. From the house, sewer pipes that carry wastewater are linked to the septic tank.

Determine Size and Location

Consider how deep you’d like your septic tank to be. Official building codes say how high the sewage pipe from the house to the septic tank opening can be. Additionally, the pipe that moves wastewater from the septic tank to the side dump fields needs to be set up at the right height.

Surveyors can look at the site’s suitability based on where your home is located. Finding out how big a septic tank is requires knowing its normal length to breadth ratio. Septic tanks usually have a length-to-width ratio of 4:1 or 2:1. It is usually necessary for the tank to be able to hold at least 3,000 liters of garbage.

Getting the Pit Ready

You will need to dig a hole for the septic tank during construction. The dirt from the pit is dug out, and a backhoe is used to dig the trenches for the lines that go to and from the septic tank.

The depth of the pit will depend on how deep the septic tank is so that there is at least a 1:80 drop from the toilet to the outlet for the septic tank.

The pit should be at least 2 meters longer and wider than the septic tank. The floor of the pit has to be 100% flat. And if the ground is sand, a perimeter footing has to be made by an excavation company during construction before building can start.

Over the pit’s base, make a bed of dirt that is at least 6 inches deep. The ground under the septic tank will be less likely to shift or break because of this.

Form the Floor Lining

After that, the septic tank’s floor needs to be built. In order to follow local building rules, the floor of the septic tank must be made of 100 mm of reinforced concrete that is extra strong.

30 mm should be left between the finished floor and the supporting steel grid. Pour enough concrete on top of this bed to cover it by 3 to 4 inches. After a day, move on to the next step.

Putting up the Wall

Concrete blocks and steel bars are often used to make the walls of septic tanks. Sizes for concrete blocks are usually 400 mm long and 200 mm high.

You should put down a layer of concrete blocks on top of the floor after the flooring is done. The open centers of the blocks should run horizontally along the edge of the hole to make a wall.

Read Also: