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Mistake & recovery · #054

Not accounting for structure deflection when hanging duct near a beam

2nd YearMeasuring & Layout

Hang duct from rigid structure — concrete deck or steel beams — not from bar joists that deflect under load. If duct must run alongside a beam, leave a ga…

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Safer field move

Hang duct from rigid structure — concrete deck or steel beams — not from bar joists that deflect under load. If duct must run alongside a beam, leave a gap for movement.

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Can you verify this before I keep going? I’m looking at: Not accounting for structure deflection when hanging duct near a beam. What’s the approved correction for this job?

Do not

Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.

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Related apprentice questions

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