From: "Sprague, Harold O." <SpragueHO(--nospam--at)bv.com>
Date: Wed, 28 Jun 2000 11:39:58 -0500
The 2 general types of fire resistant walls are fire walls and area
separation walls. In the IBC, area separation walls are a subset of fire
There are manufacturers of melt off anchors that can accommodate an
attachment to a single wall. I have generally designed and detailed the
walls and structures to avoid melt off anchors. In low seismic zones, a
single interior fire wall can be designed to cantilever from the foundation.
In high seismic areas the differential structural movement can be a
significant problem that tends to force you into 2 walls.
> -----Original Message-----
> From: Scott E Maxwell [SMTP:smaxwell(--nospam--at)engin.umich.edu]
> Sent: Wednesday, June 28, 2000 8:44 AM
> To: seaint(--nospam--at)seaint.org
> Subject: Firewall construction
> I have a building which may require a firewall (as opposed to a fire
> seperation wall). Just to make sure that we are talking apples to apples,
> my understanding of the "definition" for a firewall is that it is rated
> wall that must remain standing if the building to either side falls down
> All my experience with firewalls has been to actually construct two walls,
> each one attached to one of the structures. Thus, if one structure
> collapses , there will still be a wall in place and the other structure
> will not collapse due to the one side collapsing.
> My question is : Has anyone done a firewall that consists of one wall?
> In the building that I am working on, the structure on one side is a high
> bay with a truss and purlin roof and WF columns. The other side is a
> two story office building with composite steel floor beams, non-composite
> roof beams and steel columns.
> Any thoughts or comments?
> Scott Maxwell, PE, SE