wall penetrations when required. Air shafts (unlined) mechanical or duct enclosures, or in areas where a small section of shaft wall is needed for a single vertical pipe penetration. See page 21 for more CGC Shaft Wall Systems have been comprehensively tested for fire resistance ratings only. Understanding Fire & Smoke Damper Application Requirements ASHRAE St. Louis Chapter Tech Session February 9, at each penetration of a shaft enclosure. • If your hood or dryer exhaust duct crosses a rated wall or floor, then instead of a damper you must encase the duct. Protecting Penetrations Through Horizontal Assemblies – Using Shaft Enclosures and Through-Penetration Firestop Systems The industry refers to these wall assemblies as shaft wall systems. For more information on protecting penetrations and openings in horizontal assemblies using shaft enclosures and through-penetration firestop sytems.
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VA» Office of Construction & Facilities Management» Technical Information Library» Design Criteria Pipe/Duct Penetration of Smoke/Fire Barriers: PDF. return to top Service and Passenger Electric Traction or Hydraulic Elevator (w/Drywall Shaft and Horizontal Sliding Center Opening Doors). Not recommended for use as an unlined HVAC supply shaft or duct. Hollow cavities must be fire stopped at each floor. Installation Procedures - Horizontal Shaftwalls for Corridor Ceilings and Stairway Soffits Two Hour Horizontal Shaft Wall Assembly Instructions – See Figures 8 - 9 below. 1 - 36 of results for "Wall Penetration" 1 of 10; 07 84 29 Firestop Wall Penetration Detail U View Detail 09 21 Shaft Wall Duct Penetration Section. View Detail.
GUIDELINE ON THROUGH-PENETRATION FIRESTOPPING SECOND EDITION – AUGUST SHEET METAL AND AIR CONDITIONING CONTRACTORS’ NATIONAL ASSOCIATION, INC. evaluate the ability of a fire resistive floor or wall assembly to perform its barrier function, resisting the passage of flame, heat, hot gases, and smoke in a fire situation.