Wood 2 Hour Fire Rated Ceiling

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.

Wood 2 hour fire rated ceiling.

By code i need a minimum 1 2 hour rating. 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. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Gypsum wallboard beam fireproofing 8wf24 or heavier cad file name goldn dwg or goldn dxf no.

Description 1 2 hr. 2 fire rated wood frame wall and floor ceiling assemblies. With 1 2 wood structural panels with. And 12 of r 38 fiberglass batt insulation.

Sheathing on both sides. 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. Urb concealed grid system and tile.

Table 1 one hour fire rated loadbearing wood frame wall assemblies. Ceiling provides one hour fire resistance protection for wood framing. On a related note the woman who answers the phone at the gysum association is very knowledgable about fire ratings. Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.

Lumber shall be identified by the grade mark of a lumber. 3 mineral wool batts. Ceiling provides two hour fire resistance protection for wood framing where that note is included the entire rating is provided by the gypsum and you don t need a particular floor. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

2x4 16 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. 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. Drywall end joints located midway between continuous channels and attached to additional pieces of channel 62 1575 mm long with screws 12 305 mm.

5 8 type x gypsum wallboard h 2 6 type s drywall screws 12 o c. With 1 25 mm type s drywall screws 12 305 mm o c. Determine the existing or planned building elements including structural mechanical electrical and finish materials in the fire rated assembly. Assemblies rated from both sides.

Tested a number of wood frame fire resistance rated as semblies see photos. Ul n501 two layers of 5 8 15 9 mm fire shield wallboard applied to beam cage fabricated from.