Why a smoke barrier wall has 1 hrs rate?

Anonymous

∙ 14y ago

Updated: 8/18/2019

When an interior wall is constructed, sheet rock or some other material that covers the wall should have a rating. A 5/8" layer of sheet rock has a smoke & fire rating of 30 min. when both sides of the wall are finished out that will give the wall a 1hr. rating. Then you go from there, if there are two sheets on each side it would be a 2hr. barrier. Type your answer here...

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∙ 14y ago

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