Rated Suspended Roof Ceiling Assembly

54 1372 mm long located midway between continuous channels at end joints.

Rated suspended roof ceiling assembly.

Don t be left hanging. Fire resistance assembly chart fire resistance. With 1 2 wood structural panels with exterior glue applied at right angles to top of joist or top chord of trusses with 8d nails. Deck construction type ul design number concrete thickness panel or tile size and type minimum panel or tile thickness maximum fixture penetration.

Roof ceiling drywall assemblies fire ratings specified in this section pertain to ul classifications which are based on standard test method ansi ul263 astm e11 9 ubc 7 1 nfpa 251 can ulc s101m floor ceiling drywall assemblies roof ceiling drywall assemblies type of construction maximum time rating hrs ulc design number concrete thickness. Roof ceiling assemblies ceiling system lighting hvac outlets and other penetrants through the ceiling the plenum roof support structure and roof assembly including deck insulation and roofing system. Reference fire resistive assemblies. Floor ceiling.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.

Two types of fire rated construction assemblies pertain to acoustical ceiling systems. Understanding how the nec regards suspended ceiling designs and supports is critical for proper design and installation of electrical wiring and equipment. 2 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb. Resilient channels 24 610 mm o c.

Urb concealed grid system and tile. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. Roof floor ceiling time assembly ff file no. Concrete with cellular steel 3 hr.

Suspended from 2. As a designer and installer you should know the fundamental differences between a suspended ceiling which is an integral part of a fire rated floor ceiling or roof ceiling assembly and the far more common non fire rated assemblies. Search for georgia pacific assemblies by selecting an assembly type hourly rating stc rating or product type above or type part of a assembly name. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

Fire resistance assembly chart. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.