Rated Suspended Roof Ceiling Assembly

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

Rated suspended roof ceiling assembly. 54 1372 mm long located midway between continuous channels at end joints. 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. 2 x 10 16 o c span 12 14 live load 40lbs w 3 4 wood sheathing ceiling 3 8 gwb. Don t be left hanging.

Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. Deck construction type ul design number concrete thickness panel or tile size and type minimum panel or tile thickness maximum fixture penetration. Roof floor ceiling time assembly ff file no. Floor ceiling.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Reference fire resistive assemblies. Fire resistance assembly chart fire resistance. 2 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb.

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. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Two types of fire rated construction assemblies pertain to acoustical ceiling systems. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 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. 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. Understanding how the nec regards suspended ceiling designs and supports is critical for proper design and installation of electrical wiring and equipment.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Concrete with cellular steel 3 hr. 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. Fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.

Suspended from 2. Resilient channels 24 610 mm o c.