SITE WORK - ARE Forum

Fire door. Rated and labeled from class A to E. The entire assembly to be fire rated. Doors to be self hatching and have automatic closing devices. A 3hrs Fire walls or fire areas No glazing. B 1 ½ hrs Vertical enclosures 100sq.in. (4” min) C ¾ hr Corridors & partitions 1296sq.in. (54” max) D 1 ½ hrs Exterior walls, severe No glazing ................
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