1 Hour Fire Rated Roof Assembly

Ul p533 roof ceiling one layer 5 8 15 9 mm fire shield c ga rc 2603 wallboard attached to 1 2 12 7 mm resilient furring.

1 hour fire rated roof assembly.

Assemblies rated from both sides. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. 15 9 mm t g plywood floor sheathing. 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.

Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1.

With 1 2 wood structural panels with. Sheathing on both sides. 2x4 16 o c. For example shake roofing with a fire retardant treatment rates class b on its own but achieves a class a rating when combined with specified underlying materials such as type 72 roll roofing material.

Table 1 one hour fire rated loadbearing wood frame wall assemblies. See full report for details. Urb concealed grid system and tile. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Rating also applies with 5 8 15 9 mm fire shield c kal kore plaster base. Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.

Concrete with cellular steel 3 hr. 2 fire rated wood frame wall and floor ceiling assemblies. 5 8 type x gypsum wallboard h. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

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.