Roof Enclosure For Shaft Wall

Usg shaft wall systems installed horizontally provide economical construction for fire resistive duct enclosures corridors ceilings and stairway soffits.

Roof enclosure for shaft wall.

Below the roof the shaft enclosure has a 2 hour rating. 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. Solid shafts horizontal stud shafts. 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 specifically addressed in section 713 of the 2015 international building code ibc. Fire dampers are not required at penetrations of shafts where. Shaft enclosure for hvac ductwork and roof drain pipes extends from ground floor slab up through the roof of a 2 story building. 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.

Ul design u499 w419. 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. Head of wall firestop system elastomeric spray firestop. Shaft enclosures are specifi cally addressed in ibc section 713.

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. These shafts are vital for vertical communication power water fresh air exhaust and a means of egress. 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. Sw 104 1 hour shaftwall to steel deck.