Decode IBC 716 fire-rated glazing marking/label requirements on a curtain wall submittal review

Steps

1. Confirm the specific IBC edition adopted by the AHJ, then locate the current marking table (IBC Section 716 and its marking table, e.g., 716.1(1) in recent editions — table numbering has shifted across code cycles, so verify against the adopted edition).
2. Confirm each required label element is present on the glazing: manufacturer name, the specific test standard the assembly was tested to, and the letter/number designations required by the current marking table.
3. Decode the letter designations against the current code text rather than from memory — generally W (fire-resistive wall assembly), OH (fire-protective window/opening assembly), D (fire door assembly), with H (hose stream) and T (temperature rise) as additional performance designations — but confirm exact current definitions against the adopted IBC edition, since designations have been revised across code cycles (notably around the 2012 and 2018 editions).
4. Confirm the numeric fire-rating duration marking (e.g., in minutes) corresponds to the assembly's actual tested/listed rating per the referenced test standard (ASTM E119/UL 263 for wall-type ratings, NFPA 257/UL 9 for window assemblies, NFPA 252/UL 10B/10C for doors), and that it's issued by an approved third-party labeling/listing agency.
5. Reject submittals with illegible, missing, or field-applied (non-permanent) labels, since IBC 716 requires the marking to be permanently identified on the glazing by the approved agency, not added after installation.