1 Hour Fire Rated Wall With Exterior Siding

The ratings are for unsymmetrical walls that require ratings from both sides.

1 hour fire rated wall with exterior siding.

Lantz boggio architects used lp flameblock fire rated osb sheathing as a code compliant component of both 1 hour and 2 hour ul listed fire rated wall assemblies. The mbma fire tests of exterior walls in 1997 resulted in a new uldesign no. V421 which pro vides 1 and 2 hour fire resistance ratings for exteri or walls in metal buildings. Icc es ner 405 fire resistance rated wall assemblies ner report ner 405.

Code requirements vary an addendum to the assembly allows for the use of common claddings including smartside fiber cement and t1 11 panels. 2009 irc requires walls built within 5 of a property line or within 5 of another building on the same property to have a 1 hour fire resistance rating with fire exposure from the exterior of the building note. This assembly is fire rated for 1 hour from the interior side only except when brick is the exterior facing. Underwriter laboratories ul fire resistance rated wall assemblies ul online certifications directory click the link above then enter the corresponding ul design number 1 hour and 2 hour ratings from the list below.

The thickness and number of the layers of type x gypsum wallboard are specified for each. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls. Warnock hersey fire resistance rated wall assemblies warnock hersey product listings standards products are certified against astm iso en can cgsb can ulc 1 hour fire resistive rated wall assemblies click the link above each design number below represents a james hardie 1 hour fire resistive wall assembly jh fcs 60 01.

It also allows for the use of fiberglass insulation. Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has. This assembly is fire rated for 1 hour from both sides. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. Have tested a number of wood frame fire rated assem blies. When properly installed against fire resistant materials plaster siding also known as stucco regularly achieves a one hour fire rating.