1 Hour Fire Rated Roof Assembly

Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.

1 hour fire rated roof assembly.

Concrete with cellular steel 3 hr. Table 1 one hour fire rated loadbearing wood frame wall assemblies. 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. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 2x4 16 o c. 2 fire rated wood frame wall and floor ceiling assemblies. Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.

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. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Urb concealed grid system and tile. 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.

Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. 5 8 type x gypsum wallboard h. Sheathing on both sides. 3 mineral wool batts.

With 1 2 wood structural panels with. See full report for details. 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 rated from both sides.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. 15 9 mm t g plywood floor sheathing.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.