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Mistake & recovery · #051

Not verifying field dimensions before pre-fabricating a large duct run

2nd YearMeasuring & Layout

Walk the field and physically measure every dimension before the shop builds a long duct run. Drawings are never 100% accurate — columns shift, beams defl…

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Safer field move

Walk the field and physically measure every dimension before the shop builds a long duct run. Drawings are never 100% accurate — columns shift, beams deflect, and dimensions get revised.

Ask Foreman

Can you verify this before I keep going? I’m looking at: Not verifying field dimensions before pre-fabricating a large duct run. 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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