1 Hour Roof Assembly Ul C Joists

When floor ceiling assemblies are used to plot our ul floor ceiling assemblies and fire rated floor assemblies you can ensure the accuracy of your next project.

1 hour roof assembly ul c joists. C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and steel roof deck. No minimum joist size is given except that it needs to be adequate for structural loads. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.

In the case of a restrained 2 hour rated floor assembly this clearly states that the fire resis tance rating of the beams and joists in this assembly must also meet the 2 hour fire resis tance rating requirement. D horizontal membrane 52 shaft wall used in a horizontal plane. Fiber board 72 p225 12k3 ul design number built up roof deck material description insulation maximum joist spacing in minimum primary support member restrained assembly rating protection material minimum joist size special area requirements nl not listed ns not specified roof. With 1 2 wood structural panels with.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. Wood framed including dimensional lumber engineered joist and truss. I am looking for a 1 hour roof ceiling assembly for wood truss construction.

1 hour rating category illustration construction 24 oc min 18 depth resilient channel 16 oc 1 layer 5 8 type c gypsum sheathing min 15 32 ul l546 floor or roof with damper duct fixtures insulation and metal trim note 1 ul l550 pitched roof with duct or damper and insulation note 1 24 oc min 18 depth resilient channel 12 oc. Ul does not appear to list an assembly as described. Exposed grid 12k1 26 msg min. Is this possible without using channels and what ul number would i use.

Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly.