Transcription of ORIENTED STRAND BOARD FIRE PERFORMANCE
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ORIENTED STRAND BOARD FIRE PERFORMANCE
TB11724 Summary It has been determined by testing that wood structural panels, OSB and construction plywood, have equiva-lent fire PERFORMANCE , therefore OSB can replace ply-wood in published wall and floor 1 AssemblyRating Gypsum ThicknessOSB ThicknessPartition Wall (a)14 min. N/A 19/32 , 5/8 15 mmExterior Wall (b)45 min. 1/2 , 7/16 mmExterior Wall (c)1 hour5/8 Wall (d)1 hour5/8 (e) 1 hour 5/8 All Cavities insulated with 3-1/2 Mineral Wool in- sulation. Studs are 16 on center and OSB is inst- alled parallel to Assembly (a) has OSB on both Assemblies (b) & (c) have fire on the Assembly (d) has OSB on both sides of studs and covered by gypsum BOARD on both sides under All gypsum BOARD is Type X or National Building Code of Canada (NBCC) and the Model Codes specify that structural sheathing panels installed in combustible construction h
24 TB117 Summary It has been determined by testing that wood structural panels, OSB and construction plywood, have equiva- lent fire performance, therefore OSB can replace ply-wood in published wall and floor assemblies.
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