Why Do Traditional Water Tanks Need Tie-Rods

Most traditional modular water tanks rely on internal tie-rods. But why are they necessary—and are they still the best solution?

Tie-Rod-Free Water Tank
Tie-Rod-Free Water Tank

What Are Tie-Rods?

Tie-rods are internal metal supports used to:

  • Prevent tank walls from bulging
  • Maintain structural stability under pressure

The Problem with Tie-Rods

While effective, they introduce several issues:

  • Difficult cleaning
  • Corrosion risk
  • Stress concentration at connection points

A Better Alternative

Modern designs use structural optimization instead of internal supports.

Arc-ribbed panels distribute pressure across the surface, making tie-rods unnecessary.

LeAqua eliminates tie-rods through advanced structural design,And we used finite element analysis to prove the feasibility of eliminating the internal rods.

Tie-Rods free water tank finite element analysis
Tie-Rods free water tank finite element analysis
Tie-Rods free water tank finite element analysis
Tie-Rods free water tank finite element analysis

If you need more specific detailed parameters about Tie-Rod-Free Water tank——See《Double-Sided Arc-Ribbed Water Tank》.

FAQ

Why do water tanks need tie-rods?
They are used to resist outward pressure from stored water.

Are tie-rods still necessary?
Not in modern arc-ribbed designs, which achieve strength through geometry.