Wood 2 Hour Fire Rated Ceiling
Drywall end joints located midway between continuous channels and attached to additional pieces of channel 62 1575 mm long with screws 12 305 mm.
Wood 2 hour fire rated ceiling. 3 mineral wool batts. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. 2 fire rated wood frame wall and floor ceiling assemblies. By code i need a minimum 1 2 hour rating.
12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 2x4 16 o c. And 12 of r 38 fiberglass batt insulation.
Gypsum wallboard beam fireproofing 8wf24 or heavier cad file name goldn dwg or goldn dxf 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. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. 5 8 type x gypsum wallboard h 2 6 type s drywall screws 12 o c.
With 1 2 wood structural panels with. Assemblies rated from both sides. Lumber shall be identified by the grade mark of a lumber. Concrete with cellular steel 3 hr.
Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Ul n501 two layers of 5 8 15 9 mm fire shield wallboard applied to beam cage fabricated from. Ceiling provides one hour fire resistance protection for wood framing.
Description 1 2 hr. Descriptions of successfully tested lumber wall assemblies are provided in table 1 for one hour fire resistance rated wall assemblies and table 2 for two hour fire resistance rated wall assemblies. 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. Sheathing on both sides.
Refer to the fire resistance rating summary to determine the ul design numbers and ceiling system products that correspond to the fire rated assemblies that meet your needs. Urb concealed grid system and tile. Determine the existing or planned building elements including structural mechanical electrical and finish materials in the fire rated assembly. Tested a number of wood frame fire resistance rated as semblies see photos.
With 1 25 mm type s drywall screws 12 305 mm o c. I need help to determine the fire rating of a ceiling unfinished attic space above with 1 2 gyp board with attached to wood trusses 24 o c.