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RE: sandwich panels in seismic design category D?

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I thought S. Maxwell would chime in with his work on SIP's...

"Haan, Scott M POA" <Scott.M.Haan(--nospam--at)>

11/08/2006 03:06 PM

Please respond to

RE: sandwich panels in seismic design category D?

No response.  Are all the people on the list celebrating?  Personally I dressed for a funeral today. My dreams of aerial hunting wolves in the new ANWR oilfield complex were dashed last night.

From: Haan, Scott M POA [mailto:Scott.M.Haan(--nospam--at)]
Wednesday, November 08, 2006 8:12 AM
sandwich panels in seismic design category D?

Are wood panel / foam core sandwich panels being used anywhere in Seismic Design Category D?  ICC AC04 now says that they are allowed only in Seismic Design Categories A, B and C.   It is my understanding that the 2000 ICC evaluation reports were silent on this but that ICC evaluation reports based on the 2003 IBC say specifically they are only allowed in seismic design category A, B and C.
They used to use these panels in Anchorage Alaska to brace residential buildings frequently.  I remember one manufacturer had an engineer down in Oregon do their calculations for them and I think it was Premier Panels or something like this.  
Where are the bodies?  I would like to know why they are not allowed anymore – were their failures in Northridge or something? Are these things being used in California or else where in seismic design category D?
Did some Cheechako [no offense intended to any Cheechakos reading this] committee decide they wanted to legislate that you can’t use sandwich panels like loghomes in Alaska where there is a history of them performing?  There were no reports from the November 3, 2002 Mw7.9 Mentasta earthquake that sandwich panel braced houses in the Fairbanks area had to be condemned.