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PetriCal (cement/wood fiber) Roof Deck Design Data 1

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jmfick

Structural
Apr 14, 2009
20
We are looking at an older building with cementitious, wood fiber roof deck similar to Tectum. Manufacturer's rep suggests that product is actually PetriCal by Fireproof Products Company (now Cornell Corporation). I am in need of technical design data for this product, particularily diaphragm capacity. Anyone familiar with PetriCal?
 
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Building was constructed in the 1960's, Buffalo, New York. It is a high school ice hockey arena.

Cement-fiber deck was originally supported by thin-walled box purlins spanning between long-span trusses. Box purlins have a continuous longitudinal slot at top to accept a clip anchoring deck. In 1996, original purlins were replaced with HSS members due to severe corrosion resulting from improper dehumidification. I have attached a couple photos to help describe the existing system.

As part of a re-roofing project, the Existing Building Code requires a diaphragm analysis. Since record drawings are not available we field-measured the existing roof structure. During the field visit we discovered that the replacement purlins were not installed according to the 1996 recommendations, and the diaphragm no longer exists (is not properly connected to resist forces). To re-establish the original diaphragm I am looking for deck manufacturer information/specifications to see if product has published diaphragm capacity and if deck can be re-anchored.
 
 http://files.engineering.com/getfile.aspx?folder=f8c41c6d-eb3d-433c-a275-e729340e7426&file=Photos.doc
rcd445/SlideRuleEra - thanks for the posts!!

rcd445 - do you have the ability to forward the Cornell Corp. data you have?
 
I attempted to upload a pdf file of the Petrical data that I have but kept getting errors. It does not show diaphragm values. The ER-1116 ICBO report that I mentioned earlier is actually or Tectum. I did have diaphragm values for Petrical for a project that I designed about thirty years ago but no longer have that information. I didn't like either product but considered Petrical superior in every respect to Tectum. I would have no qualms with using the ER-1116 report data but not everyone would agree with that.
 
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