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Polyethylene water tanks can face problems such as mossing and damage if not installed correctly. Therefore, ground preparation and insulation of the water tank are of great importance. Here’s what you need to know about insulation and ground preparation for polyethylene water tanks:
Floor Preparation
1. Flat and Level Floor: The bottom floor of the polyethylene water tank must be flat and level. For this reason, a flat concrete floor should be made under the tank or diamond sliced sheet metal, flat sheet metal that will not bend to support the weight or thick and water-resistant betopan should be used on the grid profile. 2. Carrier Profile: Static calculation should be made in such a way that the feet can stand without skewing to carry the weight of the water tank to be positioned on the carrier profile. For water tanks to be positioned on concrete ground, cement, sand and water mixture should be made to prevent the ground from collapsing and iron reinforcement should be calculated. 3. Preparation of Concrete Floor: Concrete is obtained by mixing sand or gravel with cement and water in certain proportions. The concrete to be poured on the tank floor should not be smaller than the dimensions of the water tank and should be at least 20-25 cm more than the dimensions of the tank. The place where the concrete will be poured should be cleaned from parts such as oil, dust, soil, glass, nails and metal. 4. Concrete Pouring: When pouring concrete, the amount of cement and sand should be calculated and determined in m³. A sample calculation:
- Width of the water tank: 1.75 m (+ 2.0 m with an excess of 0.25 m)
- Length of the water tank: 1.75 m (+ 2.0 m with an excess of 0.25 m)
- Concrete floor thickness for water tank: 0.20 m
- Amount of concrete required: 0,80 m³
Half the amount of water and twice the amount of sand should be used. Concrete pouring should be completed within 20-30 minutes and the surface should be smooth. After pouring the concrete, wait at least 1 day and the edge molds can be removed optionally. 5. Iron Reinforcement: It is recommended to use wire mesh reinforcement in the concrete as it prevents collapse. For professional solutions, the amount of rebar required for 1 m³ concrete casting should be 100 kg. 6. Crystallized Concrete Admixture: In order to extend the life of the concrete, it is recommended to use crystallized concrete admixture by calculating every 1 m³. For C30 concrete, 3 kg crystallized concrete admixture is sufficient. 7. Climate Conditions: Concrete should not be poured in rainy and cold weather unless absolutely necessary. Sea water should not be used in concrete casting. During concrete pouring, scales or level should be used to ensure equal distribution of pressure.
Insulation of a Polyethylene Water Tank
1. Insulation Materials:
- Materials such as foam panels, insulation boards or insulation blankets.
- Water tank cover with UV protection.
- Strong tape and suitable adhesives.
2. Cleaning: Clean the outer surface of the water tank before sealing. Removing dust, dirt and other debris ensures better adhesion of the insulation materials. 3. Measurement and Cutting: Measure the dimensions of the water tank and cut the insulation material. Measure and cut accurately so that the material fits snugly against the tank surface.
4. Application of Insulation Material:
- Foam Panels or Insulation Boards: Place the panels on the tank surface and secure them with tape and adhesives.
- Insulation Blanket: Wrap the insulation blanket around the water tank and secure with tape.
5. Water Tank Cover: After applying the insulation material, provide additional protection by using a water tank cover with UV protection. The cover prevents direct sunlight from reaching the tank surface and reduces algae growth.
Factors Affecting Water Tank Platform Selection
- Profile Thickness
- Warehouse Dimensions (Width and Length)
- Warehouse Volume (Liters or Tons)
- Warehouse Height (Vertical or Horizontal)
Since the pressure will increase as the platform height increases, appropriate static calculations should be made. It is important to choose the right thickness and structure of iron profiles. Hot-dip galvanized or electrostatic painted profiles provide protection from corrosive effects.
What not to do
- Do not use the water tank on unstable ground such as soil or sand.
- Do not use horizontal water tanks on pavers, pumice or bricks so that they only stand on their feet.
- Do not use vertical water tanks only on bricks, pavers or pumice, rounded or angled around the subfloor.
- Do not use on hollow or cutting particles.
By following these steps, you can properly insulate and prepare the floor of your polyethylene water tank and protect the quality of your water.
