Not field-measuring before ordering or cutting duct
Field-measure before ordering or cutting. Drawings tell intent; the field tells what is actually there.
Stop if
- Can you verify this field dimension before I cut/order the duct?
Watch out
- Do not cut or order from an unverified drawing dimension in a tight or finished area.
Check
- Measure the real opening/run/clearance.
- Check from a verified control point.
- Compare against shop drawing dimension.
- Account for insulation/flanges/connectors.
- Ask before cutting if field and drawing disagree.
Steps
- Measure the real opening/run/clearance.
- Check from a verified control point.
- Compare against shop drawing dimension.
- Account for insulation/flanges/connectors.
- Ask before cutting if field and drawing disagree.
Say this to your foreman
Can you verify this field dimension before I cut/order the duct?
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