1 Hour Fire Rated Wood Roof Ceiling Assembly

Drywall end joints located midway between continuous channels and attached to additional pieces of channel 62 1575 mm long with screws 12 305 mm.

1 hour fire rated wood roof ceiling assembly. The fire resistance rating of a wood frame assembly is equal to the sum of. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. Fire protection rating is calculated from the flame side of the assembly and of course some assemblies have multiple flame sides. 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.

Urb concealed grid system and tile. Substrate roof floor ceiling time assembly ff file no. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Assemblies include ducts dampers lighting or other fixtures in the tested assembly.

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. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. 5 8 toughrock fireguard c gypsum board or 5 8 densarmor plus fireguard c gypsum panel ul g505 only applied perpendicular to rigid furring channels 24 610 mm o c. This section contains procedures for calculating the fire resistance ratings of walls floor ceiling and roof ceiling assemblies based in part on the standard method of testing referenced in section 703 2.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. With 1 25 mm type s drywall screws 12 305 mm o c. The section details the procedures for calculating fire resistance of walls floor ceiling and roof ceiling assemblies. Fire rated suspended ceiling wood truss council of america floor or roof fire notes 1.

See full report for details. 2 x 6 f d joists 16 o c. 2 1 3 4 2. Framing nominal 2x4 wood studs spaced 16 in.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. W 1 x 8 wood planking 2 layers 1 2 plywood span 10 live load 40lbs. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.

Concrete with cellular steel 3 hr. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. 722 6 2 1 fire resistance rating of wood frame assemblies.