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3. Place 5-7 wheels in a vertical stack in the pit. The top wheel should be level so that the drain pipe fits into it from the side.
7 wheels are quite enough for the septic tank to malaysia mobile database normally in loamy soils.
If the soil is sandy or sandy loam, there may be fewer wheels.
4. Cover this stack with a lid (made of metal or other non-rotting material) with a hole.
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Septic tank in section.
We insert a pipe into the hole, which connects the internal volume of the septic tank with the atmosphere and serves for ventilation (oxygen supply to ensure the vital activity of bacteria that process feces).
5. We perform a test drain to check the correct installation (slope) of the sewer pipes.
6. We bury our structure.