Fire Barrier Construction Calculator

Determine fire barrier construction requirements including wall thickness, materials, and penetration protection per IBC Section 707 and NFPA 221

Input Parameters

Results

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Required Thickness
in
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Gypsum Layers (each side)
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Barrier Area
ft2
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Estimated STC Rating
Note: Fire barriers require continuity from floor slab to underside of floor/roof deck above. All penetrations must be protected with tested firestop systems per ASTM E814. Joints require listed joint systems per ASTM E1966.

Reference

IBC Section 707 / NFPA 221 / UL Fire Resistance Directory Fire barriers must extend from floor to underside of deck above Penetrations limited per IBC 707.2 All joints must be protected with listed firestop systems Gypsum: Type X required, 5/8" per layer CMU: equivalent thickness method per ACI 216.1 STC = Sound Transmission Class (approximate)