I think the information you're seeking can be found on the Structural
Insulated Panel Association Website at http://www.sips.org. We have had
builders who have wanted to use the panels in Southern California but who
did not want to pay the price for testing and ICBO certification on the
panels for lateral strength. A local builder tried to bring the panels into
our area about four years ago and while I was doing some side work for a
plan check agency, we disallowed their use. The panels were manufactured in
Wisconsin and the engineers working for the company could only conceive of
lateral loads as wind loads applied normal to the panels. Each panel had an
appropriate normal maximum load and gravity load, but there was no in-plane
lateral load testing done. They went so far as to put pressure on the local
city council as the project was a large senior housing project. They ended
up building it from conventional lumber but I do understand that there has
been further testing done. You might check this site for links and further
information that would lead to any information on cyclic or monotonic tests
that might have been done.
> -----Original Message-----
> From: Roger Turk [mailto:73527.1356(--nospam--at)compuserve.com]
> Sent: Friday, June 01, 2001 2:57 PM
> To: SEAOC Listservice
> Subject: Styrofoam Panel
> I just received a call from a contractor who is remodeling a building and
> came across a styrofoam panel that is being used as a shear wall. He had
> never run into something like this and wanted some information
> about it and
> if it could be used as a shear wall.
> His description of the panel is:
> 4' wide, 8' to 10' long and about 5" - 6" thick.
> A sheet metal channel forms the boundary of the panel.
> There is no plywood or other finish on the surface of the panel.
> There is no material embedded in the styrofoam other than the
> sheet metal
> channel boundary.
> Based on this meager information, does anyone know anything about such a
> panel, who manufactured it, and if it was rated for use as a shear wall?
> A. Roger Turk, P.E.(Structural)
> Tucson, Arizona
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