Illustrative typical assembly — not a tested listing
1-1/2 Hour Fire Rated Wood Stud Wall — 2 layers 1/2" Type X · 2x4 wood studs at 16" o.c.
Typical 1.5-hour fire-rated wood stud wall assembly. 2x4 wood studs at 16" o.c. with R-13 fiberglass batt, 2 layers of 1/2" Type X gypsum board each side. Illustrative example of typical construction — not a tested UL or GA listing. Use a listed design (UL Product iQ or GA-600) for construction documents. This is an illustrative example of typical construction, not a tested UL or GA listing, and it carries no design number a plan reviewer can rely on. For construction documents, use a listed design.
- Reference number
- BS-W008 (BuildSpec, not a listing)
- Fire rating
- 1-1/2 Hour
- Assembly type
- wall
- Test standard
- Not a tested listing — illustrative
- BS-W0041-1/2 Hour · Wood Stud Wall — single layer 5/8" Type X · 2x4 wood studs at 16" o.c.
- BS-W0051-1/2 Hour · Wood Stud Wall — single layer 1/2" Type X on resilient channels · 2x4 wood studs at 16" o.c.
- BS-W0061-1/2 Hour · Wood Stud Wall — single layer 5/8" Type C · 2x4 wood studs at 16" o.c.
- BS-W0071-1/2 Hour · Wood Stud Wall — 2 layers 5/8" Type X on resilient channels
- BS-W0091-1/2 Hour · Wood Stud Wall — 2 layers 5/8" Type C · 2x4 wood studs at 16" o.c.
- BS-W0281-1/2 Hour · Wood Stud Wall — single layer 5/8" Type X · 2x4 wood studs at 24" o.c.
- IBC 2021 §703.2 (fire-resistance ratings by test or calculation)
- IRC 2021 §R302 (fire-resistant construction, where the IRC applies)
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