Static field route #19327

What do I do when a rigid seismic brace crosses a canvas connector?

Seismic Bracing, Sway Control & Structural Coordination✅ STANDARD CORRECTIONField answer expansion

📖 Verified core answer

Do not bridge a flexible connector with rigid bracing. Keep the duct and equipment restraint systems independent so the flex break can move.

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Field verification checklist

Confirm the brace physically connects both sides of the flex connector.
Check whether vibration is transferring across the joint.
Verify independent seismic/vibration restraint for duct and equipment.
Do not remove required bracing without a replacement layout.
Coordinate with foreman/inspector if the brace was already tagged.

Ask foreman

There is a rigid brace crossing the canvas connector at [unit/location]. It is locking out the flex break. Do you want separate restraints on the duct side and equipment side?

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 support load path, structural steel, seismic restraint, life safety, another trade, or inspection.

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

Do not do this

Do not tie the equipment and duct solid across a flexible connector.

Why this matters

Bridging a flex connector creates vibration, noise, torn fabric, and failed isolation.

Final verification

Use this as field training guidance. Final direction still comes from the foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, structural/seismic detail, and AHJ/code requirements.

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