




DuraStor™ Prestressed Concrete Tanks
DuraStor™ Prestressed Concrete Tanks
DuraStor™ Tanks are prestressed concrete storage tanks reinforced with post-tensioning tendons (governed by AWWA D115 and ACI 350). 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 enhances its watertightness and long-term durability.
Suitable for liquid and granular material storage, DuraStor™ Tanks can be constructed in various shapes with capacity ranges from 250,000 to 50 MG+ to suit project needs.
Compared to other tank alternatives including steel, conventional and AWWA D110—DuraStor™ Tanks offer geometric flexibility, stricter watertightness standards and may offer a significant savings in construction and long-term maintenance investments.

Reinforced with VSL Post-Tensioning Products
DuraStor™ Tanks are reinforced with VSL post-tensioning systems – which have been used as the industry standard for post-tensioning throughout the world. To offer the most durable tank solution on the market, DuraStor™ Tanks are constructed with unbonded post-tensioning in the floors and roofs, while tank walls are constructed with both unbonded and bonded post-tensioning systems.
STRUCTURAL TECHNOLOGIES is the exclusive manufacturer of VSL post-tensioning products and construction systems in the United States.

Unbonded Monostrand Post-Tensioning Systems
Unbonded Monostrand Post-Tensioning Systems
We offer a variety of anchorages and corrosion protection features for both 0.5” and 0.6” strands allowing great flexibility in meeting design and durability requirements.
Bonded Multistrand Post-Tensioning Systems
Bonded Multistrand Post-Tensioning Systems
We offer a variety of anchorages that can be designed to hold up to 55 strands in duct, and encased in grout to provide optimum corrosion protection.
Tank Support Services
Design & Planning

- Preliminary designs & estimates
- Performance specifications
- Bidding assistance
- Structural design
- Plans & specifications
Construction Support

- Supply of prestressing systems & equipment
- Installation, training support
- QA/QC support
- Value engineering
Repair, Strengthening & Modification

- Inspection & maintenance programs
- Repair & modification
- Structural rehabilitation
Water Infrastructure Engineering Support
Solutions For:
STRUCTURAL TECHNOLOGIES’ Water Infrastructure Team is focused on developing solutions that make critical water treatment, storage and delivery systems stronger and last longer. This team supports clients with options analysis, technical support, engineering, specifications and project oversight.
Pipeline & Water Infrastructure Team Leader
Read more about our products and applications on our pipeline & water infrastructure solution builder page
Design-Assist & Engineered Product Support
• Investigation Support
• Solution Development
• Budget Development
• Specification Assistance
• Constructability Consulting
• Application Engineering
• Quality Control Programs
• Project-Specific Design-Assist