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Mistake & recovery · #058

Notching corners of a box incorrectly, leaving a gap that requires excessive caulking

2nd YearFabrication

Measure and scribe corner notches carefully before cutting. Use a square to verify 90 degrees. A clean corner notch should close tight — if you need more…

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Safer field move

Measure and scribe corner notches carefully before cutting. Use a square to verify 90 degrees. A clean corner notch should close tight — if you need more than a thin bead of caulk, the notch is wrong.

Ask Foreman

Can you verify this before I keep going? I’m looking at: Notching corners of a box incorrectly, leaving a gap that requires excessive caulking. 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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