Seismic restraint cables are left too loose

Seismic cables should restrain movement without pulling the duct out of line. Remove sloppy slack and adjust them per the approved seismic detail.

Stop if

• The seismic cables on [run/location] have visible slack. I checked the brace direction and rods. Do you want them tightened per detail before inspection?

Watch out

• Do not leave seismic cable loops hanging loose because they “look safer.”

Check

• Check lateral and longitudinal brace locations.
• Look for slack loops, wrong angles, or cable rubbing other trades.
• Tension only per approved seismic detail.
• Verify main rods remain plumb.
• Photo-document before inspection if needed.

Steps

• Check lateral and longitudinal brace locations.
• Look for slack loops, wrong angles, or cable rubbing other trades.
• Tension only per approved seismic detail.
• Verify main rods remain plumb.
• Photo-document before inspection if needed.

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