Rated Suspended Roof Ceiling Assembly

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.

Rated suspended roof ceiling assembly.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Floor ceiling. 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. Two types of fire rated construction assemblies pertain to acoustical ceiling systems.

Don t be left hanging. Reference fire resistive assemblies. Roof floor ceiling time assembly ff file no. Fire resistance assembly chart.

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. 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. Concrete with cellular steel 3 hr. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.

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. Resilient channels 24 610 mm o c. Suspended from 2. Fire resistance assembly chart fire resistance.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Urb concealed grid system and tile. 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. 2 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. 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. Understanding how the nec regards suspended ceiling designs and supports is critical for proper design and installation of electrical wiring and equipment.

54 1372 mm long located midway between continuous channels at end joints. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.