1 Hour Fire Rated Roof Assembly

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.

1 hour fire rated roof assembly.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. 2x4 16 o c. Rating also applies with 5 8 15 9 mm fire shield c kal kore plaster base.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. With 1 2 wood structural panels with. 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. Concrete with cellular steel 3 hr.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Sheathing on both sides. 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. 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.

Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. See full report for details. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. 15 9 mm t g plywood floor sheathing.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. Table 1 one hour fire rated loadbearing wood frame wall assemblies. Assemblies rated from both sides. 2 fire rated wood frame wall and floor ceiling assemblies.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1. Urb concealed grid system and tile. 3 mineral wool batts.

Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.