1 Hour Fire Rated Roof Assembly

With 1 2 wood structural panels with.
1 hour fire rated roof assembly. See full report for details. Sheathing on both sides. 2 fire rated wood frame wall and floor ceiling assemblies. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing.
If trusses are specified then these assemblies can be used to achieve the desired fire rating as long as all the details of the assembly requirements are met. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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.
Urb concealed grid system and tile. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Assemblies rated from both sides. 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.
Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. 3 mineral wool batts. Do the plans call for a 1 hour assembly or a 2 hour assembly. Concrete with cellular steel 3 hr.
Keep in mind that most of the wood truss fire rated assemblies call for a minimum depth of 12 in. 5 8 type x gypsum wallboard h. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. Assemblies include ducts dampers lighting or other fixtures in the tested assembly.
2x4 16 o c. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. A one hour rating would mean the structural elements have not yet reached their yield point when exposed to a under deck heat load defined in astm e119 for steel structural members as reaching 1 070 degrees f.