Detail 1 Hour Fire Rated Interior Wall Assembly

Gypsum wall to bottom of fire proofed steel i beam to concrete over metal deck max. Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

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Detail 1 hour fire rated interior wall assembly.

In my experience a rated wall is required to provide a rating from exposure to fire on either side of the wall. So playing devil s advocate here while the existing brick veneer finish in this case may provide a 1 hour rating per the iebc prescriptive method the brick is probably not self supporting and the other side of the wall the existing structural backup wall which laterally supports. Ul design u465 v438. According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board.

Customer service sales 1 800 950 3839 technical support 1 800 usg 4you product safety hotline 1 800 507 8899. Head of wall firestop system firestop sealant. Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. O c double top plates single bottom plate.

Framing nominal 2x4 wood studs spaced 16 in. Deep fabricated from min 0 018 in. Ss 104 1 hour partition to steel deck. Rated under load to last at least 2 hours in a fire with exposure on the inside wall surface frt wood framing is allowed as an exception within the ibc code structural shear rated wall with interior fire exposure rating lp wall assembly for this application has been allowed by building code officials common applications.

2 1 3 4 2. Fire rated wood frame wall and floor ceiling assemblies 5 ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251. Cfs sp wb water based acrylic sealant spray mineral wool show all. Thick galv steel attached to floor and ceiling with fasteners spaced 24 in.

Type x gypsum board is wallboard to which non combustible fibers have been added. Wide by 3 5 8 in. Proprietary channel shaped runners 1 1 4 in.

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