Plastic elevated tank
Plastic elevated tanks for storing water at height
A plastic elevated tank is made of polyethylene or GRP, and its low weight makes it a good fit for steel or concrete structures with limited load capacity. These tanks are fully resistant to rust and corrosion and need no periodic painting.
Key features
Technical details
For drinking water, a hygienic, UV-resistant polyethylene grade is used to prevent algae growth and loss of water quality under direct sunlight. Their capacity is usually more limited than steel tanks of the same size.
Besides supplying and installing plastic elevated tanks, Behineh Ab designs the supporting structure for the weight of the full tank.
Technical specifications
Polyethylene or GRP: which to choose?
Polyethylene is an economical, lightweight option for most drinking-water and agricultural uses, but larger volumes usually need more structural reinforcement. GRP (fibreglass) offers higher mechanical strength at similar volumes and suits larger tanks or harsher loading conditions.
Volume and temperature limits of plastic tanks
Plastic elevated tanks are usually most economical for medium volumes (up to a few tens of cubic metres); at very large volumes the weight of the reinforcing structure needed can cancel out the plastic's weight advantage. At very high or low temperatures, polyethylene also loses more of its mechanical properties than steel.
Installing and fixing to a steel support structure
Unlike steel tanks, which can be welded directly to the support structure, plastic tanks are usually seated on the structure with mechanical clamps and retaining straps so no local stress is put on the plastic shell. Designing these fixings correctly prevents the tank from deforming over time.
Applications and industries
Photo gallery
Plastic elevated tank gallery
Frequently asked questions
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Plastic elevated tank
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