FIRE WALLS
FIRE WALLS
(OP)
I have a design that consists of 3-story storage with steel frame and concrete composite deck. The size of the building requires a fire wall that separates the structure in two. I have designed the floor framing so that the adjecent steel line resides 10 feet from the masonry wall, resulting in the floor deck to span between the steel support and a shelf angle bolted to the masonry wall. This allows me to use the wall for bearing as well as a shear wall.
The code for fire walls requires that a collapse on one side shall not cause a collapse on the other side (and the wall to remain). My feeling is that the bolts and/or angle on the fire side would fail and that the bolts on the "good" side would prevent wall damage.
It seems terribly excessive to build a steel line immediately on either side of the masonry wall.
Thanks for any input.
Zulak
The code for fire walls requires that a collapse on one side shall not cause a collapse on the other side (and the wall to remain). My feeling is that the bolts and/or angle on the fire side would fail and that the bolts on the "good" side would prevent wall damage.
It seems terribly excessive to build a steel line immediately on either side of the masonry wall.
Thanks for any input.
Zulak






RE: FIRE WALLS
This can be somewhat difficult as you do not know the exact mechanism by which the structure fails.
Alternatively, you build two walls separated completely so that collapse on one side doesn't affect the other.
We designed a single story warehouse in Pennsylvania a few years ago that used a single CMU wall and separate steel framing on each side (the wall was therefore non-load bearing). The connections of the wall to the steel was just adequate to support the required lateral loads on the walls (in this case a 5 psf lateral code pressure perpendicular to the wall). Lateral bracing for the building was added, and the wall did not serve as a shearwall.
RE: FIRE WALLS
Carl Bauer
www.bauerconsultbotswana.com
RE: FIRE WALLS