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Introducing the Strong-Rod™ Uplift Restraint System for Roofs

The Simpson Strong-Tie® Strong-Rod™ Uplift Restraint System for Roofs (Strong-Rod URS) is a continuous rod tiedown solution designed to provide a complete load path to resist uplift pressure on the roof.

As hurricane ties transfer roof uplift forces into the uppermost top plates in a wood-frame structure, a Strong-Rod URS directs that resistance all the way down to the foundation or final termination point. The design parameters for this specific type of continuous rod system were developed in June 2010 through a consensus process managed by ICC-ES. These requirements are provided in ICC-ES acceptance criteria AC391. Following those acceptance criteria requirements, the Strong-Rod URS has obtained an ICC-ES ESR-1161 code report and is designed and detailed to:

  • Transfer wind uplift loads efficiently from wood framing to steel components in the rod runs
  • Keep wood top-plate bending within acceptable limits
  • Control wood top-plate rotation
  • Limit steel rod elongation
  • Restrict crushing of wood top plate
  • Address deflection caused by wood shrinkage

Through years of testing at our state-of-the-art facilities, Simpson Strong-Tie is unmatched in its design knowledge of continuous rod tiedown systems. Contact us to learn how you can leverage our experience to help design and specify code-listed uplift restraint systems for roofs.

Also see: ATS versus URS.