Roof Enclosure For Shaft Wall

Head of wall firestop system elastomeric spray firestop. Solid shafts are normally used to construct mechanical or duct enclosures or in areas where a small section of shaft wall is needed for a single vertical pipe penetration. Shaftwall system consists of 1 shaftliner panels supported by 2 1 2 4 or 6 c t studs and faced on one side with two layers of 1 2 fire code board.

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Roof enclosure for shaft wall.

Ul design u499 w419. Shaft enclosures that are permitted to be penetrated by ducts and air transfer openings shall be protected with approved fire and smoke dampers installed in accordance with their listing. Sw 104 1 hour shaftwall to steel deck. Shaft enclosure for hvac ductwork and roof drain pipes extends from ground floor slab up through the roof of a 2 story building.

Stairwall systems are designed to enclose stairwalls this system is finished on both sides with a single layer of 1 2 fire code board. Shaft enclosures are specifi cally addressed in ibc section 713. Installation detail for transition to rated vertical shaft xl009 23 installation detail for transition to rated horizontal shaft xl015 24 installation detail for grease hoods xl022 25 optimized grease duct enclosure system 26 installation pictures good installations and bad access door examples 27. However because shaft enclosure walls are to be constructed as fi re barriers per section 713 2 many shaft wall require ments directly reference provisions of fi re barriers found in section 707.

Shaft enclosures are specifically addressed in section 713 of the 2015 international building code ibc. Below the roof the shaft enclosure has a 2 hour rating. Usg shaft wall systems installed horizontally provide economical construction for fire resistive duct enclosures corridors ceilings and stairway soffits. Fire dampers are not required at penetrations of shafts where.

Above the roof the shaft enclosure is a penthouse with walls to about 30 inches above the roof and then 48 inch high louvers up to the roof of the shaft penthouse. Solid shafts horizontal stud shafts. However because shaft enclosure walls are to be constructed as fire barriers per section 713 2 many shaft wall requirements directly reference provisions on fire barriers found in section 707. These shafts are vital for vertical communication power water fresh air exhaust and a means of egress.

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