Correct installation steps of the tank:

1. Place the tank on the soil and soft bed
The soil loosens due to the proximity of moisture and changes its shape due to the weight of the tank. The deformation of the soil leads to double pressure on one of the bases or the sitting part of the tank, which eventually causes the deformation and failure of the tank.

2. Placing the foreign body under the tank bases to level or increase the height of the tank
If the tanks are not installed on a level bed, they will be formed and fail after some time. When the work surface is uneven, a proper foundation should be created to level the surface, the surface of the foundation should be completely uniform and level, Placing debris such as brick, stone or wood prevents the uniform distribution of pressure in the water tank's seating bed, which itself leads to stress concentration and failure.
 Leveling the tank
3. Installing the tank on the incomplete metal structure
It is common to use a short or long metal structure as a bed and tank holder. But what should be kept in mind is the integrity and strength of the surface under the tank, as well as the larger seating area should be fully respected. Failure to comply with this condition will lead to tank failure. Of course, if the tank is installed at a height, the wind force must also be considered in the calculations of the structure, especially when the tank is empty of water.

Tank failure
4. Failure to install an aerator on the tank
Polyethylene tanks are designed to work at one atmospheric pressure, and applying any additional pressure (or suction) will cause deformation and failure of the tank. During any change in the water level of the tank, in order to prevent the change of the air pressure inside the tank, a vent pipe is installed so that the air exchange takes place in a sufficient amount. The size of the vent pipe should be equal to the largest inlet or outlet of the water tank.
5. Weight restraint of inlet and outlet pipe with water tank connections
Piping and its accessories, especially during work, when they are filled with water, gain significant weight, and if it is not restrained and its weight is imposed on the connection connected to the tank, it will cause the tank to break or water leak from the connection.