Vertical Support Rod : Overview
A Vertical Support Rod (also named tie rod, tension rod, or stiffening rod) is a high-strength steel rod installed vertically between the top and bottom structural rings of a modular water tank. Transfers tensile loads from the upper sections of the tank to the foundation, reducing stress on wall panels. Unlike horizontal lacing bars that resist hydrostatic pressure, vertical rods are designed to handle compressive and tensile forces from above. They enhance overall tank stability, especially in regions prone to seismic activity or extreme weather.
How It Works: The Structural Role
When the tank is filled with water, hydrostatic pressure pushes the walls outward.
The lacing bars resist hoop stress horizontally.
The vertical support rods counteract vertical bending moments and transfer tensile forces downward.
Together, they form a stable framework that keeps the tank rigid and round/square.
Vertical Support Rod: Main Types
1-Material
Typically manufactured from high-tensile galvanized steel or stainless steel for corrosion resistance.
✅ Option 1: Carbon Steel, Galvanized Surface Coating, Cost is lower
Application: Most are use for non-potable water。
✅ Option 2: Stainless Steel, Steel Grade SS304 or SS316, Cost is expensive
Application: Most are use for potable water。
2-Technical Considerations
Rod diameter and quantity are calculated based on roof span, design loads, and local building codes
Proper installation sequencing is critical – typically installed after wall assembly but before final roof placement
Regular inspection for corrosion or deformation is recommended as part of tank maintenance。
Vertical Support Rod : Installation
Step 1: Identify Installation Positions
Step 2: Base Connection
Step 3: Roof Connection
Step 4: Tensioning and Alignment
Conclusion
The Vertical Support Rod is not just an accessory — it is a vital structural element in modern modular water tanks. Whether you’re installing an SMC drinking water tank or a large HDG industrial reservoir, properly designed and installed vertical rods ensure safety, durability, and compliance.
As a professional manufacturer and exporter of modular water storage systems, we provide engineered vertical support solutions tailored to your tank’s dimensions, location, and usage — ensuring long-term performance and peace of mind.
Need technical drawings or a full rod kit for your project? Contact our engineering team today for a free consultation.
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Whatsapp✆:+86 15350598856
Web: www.cnhbwatertank.cn
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