Ul Roof Fire Rating Assembles

Ul standard ul 1256 edition 4 standard for fire test of roof deck constructions edition date.

Ul roof fire rating assembles. Ul l550 pitched roof with duct or damper and insulation note 1 24 oc min 18 depth resilient channel 12 oc 1 layer 5 8 type c gypsum sheathing min 23 32 24 oc min 5 1 4 depth with upper. A one hour rating would mean the structural elements have not yet reached their yield point when exposed to a under deck heat load defined in astm e119 for steel structural members as reaching 1 070 degrees f. Go to myul certification database ul product iq. Understanding the ul directory 3 1.

For additional information on usg fire rated assemblies cad bim content and specifications. Fire rated wall floor and ceiling assemblies provide the necessary fire and smoke barriers to create compartmentalization during a fire safeguarding against the spread of fire and smoke within a building or to and from a building. Do you have any information regarding the suitability of the fire rated ceiling assemblies for sloped roof trusses. Ul 263 astm e119 bs476 fire resistance rating.

A secure online source for increased visibility into your ul project files product information documents samples and services. Helpful documents and resources for usg s roof assemblies can be found on this page. Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system incorporating the product or any given piece of the product. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing.

Rapid rise fire test fire resistance designs for protecting structural members subject to petrochemical exposure fires are investigated according to ansi ul 1709 rapid rise fire tests of protection materials for structural steel and are covered under fire resistance ratings ansi ul 1709 bybu. October 31 2002 ansi approved. Some are reluctant to rely on test results from flat parallel chord trusses applied to sloped roof trusses. Refer to our roof ceiling assembly documents which includes ul fire rated roof assemblies for easy guidance through the assembly of a roof or ceiling on your next project.