Septic Tank Construction Methods and Materials
The most important aspect of septic tank construction is that the tank should be installed on a level grade and at a depth that provides adequate gravity flow from the home and matches the invert elevation of the house sewer.
![Septic Tank Construction Septic Tank Construction](https://cdn-0.civilengineersforum.com/wp-content/uploads/2013/10/image002.gif)
There are some other important notes need to be remembered during septic tank design and construction.
- The tank should be placed on firm ground so that settling is minimum.
- Tank performance can be impaired if a level position is not maintained because the inlet and outlet structures will not function properly.
- Septic tanks must be watertight, structurally durable and stable. As a construction material, reinforced concrete adequately meets these requirements.
- Steel is another material that can be used for septic tanks but should be properly coated for corrosion resistance.
- Plastic and fiberglass tanks can also be used. These are very light, easily transported; provide resistance to corrosion and decay.
- The walls of septic tanks should have a thickness of at least 80 to 100 mm and can also be made of brick work. The important thing is that the tank should be made fully watertight.
- The inlet and outlet pipes should be properly positioned and sealed with concrete or other adhering materials.
You may like to read  the following posts:
- How a septic tank system works and
- Advantages and disadvantages of Ventilated Improved Pit Latrine System