Static field route #18922

What do I do when seismic bracing crosses my round duct route?

Seismic Bracing, Sway Control & Structural Coordination🟨 CHECK FIRSTV189 answer-gap expansion

📖 Verified core answer

Do not cut, loosen, or move seismic bracing to make your duct fit. Verify the brace, measure the conflict, and offset/reroute the duct only by an approved method.

Open in Field Rescue Open category

Field verification checklist

Identify whether the crossing item is seismic bracing, hanger support, pipe support, or temporary work.
Measure the clearance and exact crossing point.
Check whether your duct can offset, change elevation, or shift without hurting airflow/access.
Check for metal-on-metal contact, chafing, and future movement.
Ask before touching any seismic or structural brace.

Ask foreman

A seismic brace crosses our round duct route at [location]. I measured the conflict and checked offset space. Do you want us to offset the duct, change elevation, or coordinate a revised brace/detail?

Text to foreman

Route options

AMake the field correction only if it is within your assignment and the approved method.

BHold and document the condition if the fix affects airflow, access, life safety, pressure class, rated assemblies, equipment, or another trade.

CBring the foreman/detailer the location, what you checked, and what decision you need before cover, startup, or rework.

Do not do this

Do not cut, notch, loosen, relocate, or hang from seismic bracing without approved direction.

Why this matters

Changing seismic bracing can create a safety/inspection failure and put responsibility on the wrong trade.

Verification basis

Approved drawings/specs, project coordination drawings, manufacturer instructions/submittals, shop standards, foreman/detailer direction, employer policy, and AHJ/code requirements.