2 Hr Fire Rated Wall Assembly

1 hour exterior wall assembly ul design no.

2 hr fire rated wall assembly.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. When you cannot maintain a minimum 3 4 in. Table 2 two hour fire rated loadbearing wood frame wall assemblies. Chapter 7 of the international building code ibc refs.

5 8 type x gypsum wallboard h 2 6 type s drywall screws 8 o c. How to assemble a two hour fire rated wall step 1. Sheathing on both sides. 2x6 24 o c.

Double the number of type x sheets on the wall for a simple system installed over fire resistant fiberglass. U419 july 12 2018 nonbearing wall ratings 1 2 3 or 4 hr see items 4 5 through 5k. 19 1 mm air space between the h stud assembly and any adjacent framing members. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

Use thicker drywall for a two hour rating if double sheeting is not an option with fire resistant insulation. 5 8 type x gypsum wallboard h 2 6 type s drywall screws 24 o c. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies. See general information for fire resistance ratings can ulc s101 certified for canada design criteria and allowable variances design no.

5 mineral wool batts. 2 hour interior wall assembly ul design no. 19 1 mm air space cover the h studs and c tracks by gypsum board battens. Concrete masonry is widely specified for fire walls and fire barriers because concrete masonry is noncombustible provides durable fire resistance and is economical to construct.

For a 2 hour fire rated assembly without the need for battens maintain a minimum 3 4 in. 2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Building codes have special requirements for the walls separating adjacent townhome units and the primary requirement is that they serve as two hour firewalls meaning that fire in one unit will require at least two hours before breaking through the wall.

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 itself will necessarily provide one hour fire resistance two hour fire resistance or any other.