IBC Design 721.1(2) 15-1.14

1-Hour Fire Rated Exterior or interior walls — 2" x 6" wood studs at 16" with double top plates, single bottom…

IBC Table 721.1(2), Item 15-1.14 (q) (Exterior or interior walls): 2" x 6" wood studs at 16" with double top plates, single bottom plate; interior and exterior sides covered with 5/8" Type X gypsum wallboard, 4' wide, applied horizontally or vertically with vertical joints over studs, and fastened with 2-1/4" Type S drywall screws, spaced 7" on center. Minimum finished thickness (face-to-face) — 1-hr: 6-3/4". Prescriptive assembly from the adopted building code — thicknesses are code minimums, see table footnotes for conditions.

2" x 6" wood studs at 16" with double top plates, single bottom plate; interior and exterior sides covered with 5/8" Type X gypsum wallboard, 4' wide, applied horizontally or vertically with vertical joints over studs, and fastened with 2-1/4" Type S drywall screws, spaced 7" on center.

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  • Layer-by-layer components with thicknesses
  • Cross-section diagram
  • Applicable code sections and test standard
  • 6 related assemblies
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