Rated Roof Assembly

The brands consist of an ignited wood lattice placed directly on top of the test specimen.

Rated roof assembly.

V337 2 hour interior wall assembly ul design no. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. All new fire rated roof ceiling assembly files. 2 hour exterior wall assembly ul design no.

Have a question about assemblies. Urb concealed grid system and tile. 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. Both are burn through tests and the ultimate roof systems rating is the lowest of the three tests.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. The class a brand weighs 2 000 grams class b 500 grams and class c 9 1 4 grams. Ultimately the design and detailing of the project assembly or system is the responsibility of a professional and all projects must comply with applicable building codes and standards.

For example shake roofing with a fire retardant treatment rates class b on its own but achieves a class a rating when combined with specified underlying materials such as type 72 roll roofing material. Helpful documents and resources for usg s roof assemblies can be found on this page. Not all ul rated assemblies that use firestone roofing products are eligible for the firestone red shield red shield medallion or platinum warranty. Find usg product specific cad and revit files.

Assembly rated class a roof coverings are those that meet class a standards when combined with other elements. The stc rating shown reflects testing or evaluation of an assembly with one or more products under test conditions and may not apply to all products listed for each assembly. Concrete with cellular steel 3 hr. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies.

If the roof deck is combustible such as wood plywood or osb two additional tests must be conducted. As applied to 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. Our cad and revit library of design drawings of wall intersections joints and other construction details.