VSL’s DuraStor™ Tanks are cast-in-place, prestressed concrete liquid storage tanks primarily reinforced with post-tensioning tendons. High-strength steel tendons apply compression to the tank floor, walls and roof to counteract the applied forces and provide residual compression. This method actively reinforces the structure and significantly enhances its watertightness and long-term durability.
The design and construction of DuraStor™ Tanks are governed by national building codes ACI 350 and AWWA D115. Additionally, the Post-Tensioning Institute (PTI) provides numerous specifications and guides on the design, fabrication, handling, storage, placement and inspection of post-tensioning systems. Post-tensioning is a proven technology with decades of successful applications on thousands of structures worldwide including bridges, high-rise buildings, foundation systems, parking structures, silos for granular material storage and liquid storage tanks.
Versatile
VSL’s DuraStor™ Tanks can be constructed in many shapes to suit project needs. Shapes include circular, rectangular, rectangular with rounded corners, egg-shaped digesters, irregular-shaped polygons and oval – there are no practical limitations with this method of construction. Tanks have been constructed with capacities ranging from 250,000 gallons to above 30,000,000 gallons.
DuraStor™ Tanks are appropriate for all types of liquid containment including chilled and potable water, storm water retention, sludge, wastewater, digesters, ethanol, petroleum products and liquefied natural gas. They also are used in the storage of granular materials such as coal, grains, ash, cement, clinker and nuclear containment.