Hanger-Rod Stiffeners: When the Rod Needs Lateral Support
Use rod stiffeners only where the approved seismic or support detail requires them, and match the rod, stiffener, attachment, length, and orientation to that detail.
Stop if Does this hanger rod require a stiffener under the approved detail, and which stiffener attachment applies here? Watch out Do not add random strut or wire as a substitute, guess the trigger length, or clamp a stiffener where it can damage the rod or duct. Check Find the approved support or seismic detail Confirm rod diameter and unbraced length Identify the specified stiffener type and attachment Check clearance from duct, insulation, and other trades Verify both ends are installed exactly as detailed Steps Find the approved support or seismic detail Confirm rod diameter and unbraced length Identify the specified stiffener type and attachment Check clearance from duct, insulation, and other trades Verify both ends are installed exactly as detailed Say this to your foreman Does this hanger rod require a stiffener under the approved detail, and which stiffener attachment applies here?
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