Ductwork Gauge Markings
Sheet metal gauge markings indicate thickness. Apprentices need to read and verify gauge markings.
Stop if
- Can you confirm the gauge marking on this duct matches the spec for our pressure class?
Watch out
- Don't install duct without verifying gauge. Don't assume all metal from shop is correct gauge.
Check
- What gauge is stamped?
- Does it match spec for this pressure class?
- Marking on every piece?
Steps
- What gauge is stamped?
- Does it match spec for this pressure class?
- Marking on every piece?
Say this to your foreman
Can you confirm the gauge marking on this duct matches the spec for our pressure class?
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