Field quality plans and inspection records · Lesson 2 of 4

Field quality plans and inspection records: materials, standards and design constraints

Where the requirements for a check come from, what a sheet-metal quality plan covers, how thickness is stated in gauge, inches and millimetres, why two guide-specification tables can disagree, AFS's published limits and hem starting values, and receiving and storing metal.

You will be able to: Name where a field check's requirements come from, read a thickness in gauge, inches and millimetres, use AFS's published limits as acceptance criteria for AFS pieces, and run a receiving inspection.

12 min · 11 slides · 10 questions

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Slide 1 of 11

Where requirements come from

Before work starts the UFGS has the crew review each paragraph of the specification, the referenced codes and standards, and the contract drawings.

UFGS 07 60 00's own note tells the specifier to compare its thicknesses with the NRCA and SMACNA manuals and to edit the tables using the more stringent requirement.

Sources

UFGS 01 45 00 Quality Control (August 2023, Change 3 - 08/25) - USACE / NAVFAC / AFCEC, hosted by the Whole Building Design Guide (NIBS)
UFGS 07 60 00 Flashing and Sheet Metal (August 2023, Change 1 - 05/25) - USACE / NAVFAC / AFCEC, hosted by the Whole Building Design Guide (NIBS)

Glossary

Gauge: A number that names a sheet thickness; a larger gauge number is thinner metal. In the AFS material register 24 ga galvanized steel is 0.0276 in and 16 ga is 0.0635 in.
Guide specification: A model specification a project editor tailors; text in brackets is an option to keep or remove. UFGS 07 60 00 is a federal example.
Girth: The total flat width of a formed piece with its hems included; AFS limits it to 48 in.
End flange: The short leg at a free end of a profile; AFS requires at least 0.5 in.
Receiving inspection: Uncrating and checking delivered material for damage, dampness and wet-storage stains before it is accepted (UFGS 07 60 00).