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Apprentice answer

Why is it bad to brace across a flexible duct connector

3rd YearSeismic Bracing & Vibration ControlStandard Correction

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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Plain-English answer

A canvas/flexible connector is supposed to break vibration and allow movement. A rigid brace across it turns it back into a solid connection.

Remove the brace across the flex gap and confirm the duct side and equipment side each have their own approved restraint/support method.

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?

Verify before acting

Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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