Draft Curtain At Open Stair
However many people are unfamiliar with the true function of a draft curtain.
Draft curtain at open stair. And is requiring a draft curtain. Sometimes mistaken for smoke barriers glass smoke baffles and smoke curtains limit the spread of smoke in an area to activate a sprinkler in the building. In trying to interpret ibc 708 2 2 1 draft curtain and closely spaced sprinklers required for non egress open stairways vs 708 2 11 no mention of draft curtain requirement i can t figure out if a draft curtain is required or not. Crl blumcraft glass smoke baffles and smoke curtains also known as draft curtains or smoke screen are used for limiting the spread of smoke and providing adequate egress during evacuations.
Most curtain track systems include a u shaped track that hangs upside down on the ceiling plastic slides that fit inside the track that have a hole in them for drapery hooks mounting brackets to hold the track to the ceiling and end caps to cap off the ends of. The existing main stairway from 1st to 2nd floor is not enclosed nor does it have a draft curtain in fact i am not sure if i have ever seen a draft curtain in a b occupancy. As the fire began to grow it was very obvious that opening the front. However protecting open atriums during a smoke or fire emergency can be tough.
The model 4000 perimeter smoke and fire curtain is the answer. Smoke is routed away from people and merchandise to the extraction system. Also the floor openings must be protected by a draft curtain and closely spaced sprinklers abiding by nfpa 13 as modified by. In large open areas for example shopping malls smoke curtains and a smoke extraction system are used in conjunction with the smoke curtains.
Cut the curtain track to this length with a hack saw. We are confused as to why we cannot simply add. Measure the wall along the railing side of the staircase to the opposite wall. This is especially true when integrating a communicating stair or escalator in addition to a traditional elevator.
Because open convenience stairs pose increased fire hazards they are required to abide by a strict series of code. The building official calling this new stairway an exit access stairway per 1009 3. Unlike an elevator smoke barrier a draft curtain helps to funnel smoke to venting or exhaust systems rather than providing a full enclosure. This combination of curtain technology allows three significant safety features to simultaneously occur.
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