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.
1 hour fire rated exterior wall assembly both sides.
Both exposed sides of the wood framing with 1 7 8 in.
It also allows for the use of fiberglass insulation.
This assembly is fire rated for 1 hour from the interior side only except when brick is the exterior facing.
1 hour exterior wall assembly ul design no.
705 5 fire resistance ratings.
The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.
Exterior walls shall be fire resistance rated in accordance with tables 601 and 602 and this section.
Assemblies rated from both sides.
Sheathing on both sides.
1 hour rated exterior fire wall.
5 mineral wool batts.
Rated from one side and from both sides.
An additional assembly 15 1 6 which can be found in ibc table 720 1 2 is also shown.
U301 u302 and u371.
Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test.
Ratings for these two hour assemblies are from both sides.
5 8 type x gypsum wallboard h.
V applied vertically with vertical joints over studs e exterior sheathing.
This assembly is fire rated for 1 hour from both sides.
Table 2 two hour fire rated loadbearing wood frame wall assemblies.
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.
This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls.
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.
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.
Long 6d nails spaced 6 in.