1 Hour Fire Rated Exterior Wall Assembly Both Sides

Both exposed sides of the wood framing with 1 7 8 in.

1 hour fire rated exterior wall assembly both sides. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. U301 u302 and u371. 5 mineral wool batts. 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.

Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test. Sheathing on both sides. 1 hour rated exterior fire wall. It also allows for the use of fiberglass insulation.

Assemblies rated from both sides. This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls. Exterior walls shall be fire resistance rated in accordance with tables 601 and 602 and this section. Ratings for these two hour assemblies are from both sides.

V applied vertically with vertical joints over studs e exterior sheathing. 5 8 type x gypsum wallboard h. The required fire resistance rating of exterior walls with a fire separation distance of greater than 10 feet 3048 mm shall be rated for exposure to fire from the inside. This assembly is fire rated for 1 hour from the interior side only except when brick is the exterior facing.

Long 6d nails spaced 6 in. 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. According to the engineered wood association a one hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures and support its full load for at least one hour after the fire begins. Examples of two hour fire rated bearing wall assemblies with less than 10 feet fire separation distance for illustration purposes three ul assemblies are shown.

Table 2 two hour fire rated loadbearing wood frame wall assemblies. An additional assembly 15 1 6 which can be found in ibc table 720 1 2 is also shown. Rated from one side and from both sides. 1 hour exterior wall assembly ul design no.

Structural shear rated wall with interior fire exposure rating lp wall assembly for this application has been allowed by building code officials.