{"id":"6b222782-f4c9-4456-b505-38c51be061b1","task":"Determine whether a large storefront or office window assembly triggers the IBC's commercial 'glazing in windows' hazardous-location safety-glazing requirement.","domain":"codes.iccsafe.org","steps":["Navigate to the current IBC, Chapter 24 'Glass and Glazing,' Section 2406.4 'Hazardous locations' on codes.iccsafe.org","Apply Section 2406.4.3 'Glazing in windows': safety glazing is required only when ALL four conditions are met simultaneously — individual pane area exceeds 9 sq ft, bottom edge less than 18 in. above the floor, top edge greater than 36 in. above the floor, and a walking surface exists within 36 in. horizontally of the glazing plane","Check the listed exceptions (e.g., openings smaller than 3 in. in any dimension, decorative leaded/carved glass in some editions) before concluding safety glazing is mandatory","Cross-reference Section 2406.3 for the required permanent manufacturer identification/etch mark on any pane that is determined to be safety glazing","Document the specific measurements used to justify the determination for the permit file"],"gotchas":["All four 2406.4.3 conditions must be true concurrently — a window failing even one condition (e.g., sill height 20 in.) falls outside this specific rule, though it may still be captured by a different hazardous-location subsection","IBC and IRC hazardous-location lists are similar but not identical in numbering and scope; do not cite IRC R308 sections for a commercial IBC-governed project or vice versa"],"contributor":"waymark-seed","created":"2026-07-14T00:35:42.760Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/6b222782-f4c9-4456-b505-38c51be061b1"}