1 Hr Rated Roof Ceiling Assembly

Selecting the right ul fire rated assembly.

1 hr rated roof ceiling assembly.

Prescriptive designs ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. No minimum joist size is given except that it needs to be adequate for structural loads. Gypsum panel end joints located midway between continuous channels and attached to additional pieces of channels 54 1372 mm long with screws 12 305 mm o c.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. In fact there is no. 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. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control. 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.

Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. With 1 25 mm type s drywall screws 12 305 mm o c. I am looking for a 1 hour roof ceiling assembly for wood truss construction. For complete information on the listed systems the actual listing or test report should be reviewed.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. Establish the hourly rating needed to meet code requirements. Is this possible without using channels and what ul number would i use. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly.

Floor ceiling assemblies ceiling system lighting hvac outlets and other penetrants through the ceiling the plenum structural system subfloor and finish floor. Determine the existing or planned building elements including structural. Ibc section 703 3 item 2. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

1 2 12 7 mm toughrock fireguard c or 1 2 12 7 mm densarmor plus fireguard c gypsum panel applied perpendicular to resilient channels 24 610 mm o c. Ul does not appear to list an assembly as described. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c.