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Cantilever a Sip
Last Post 05 Feb 2009 08:52 AM by AUSTENNN. 6 Replies.
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AUSTENNNUser is Offline
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04 Feb 2009 08:17 AM

Where can I find a chart to see how much I can cantilever a SIP?  My interest is in a 8  inch roof Sip panel.

cmkavalaUser is Offline
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04 Feb 2009 08:21 AM
Posted By AUSTENNN on 02/04/2009 8:17 AM

Where can I find a chart to see how much I can cantilever a SIP?  My interest is in a 8  inch roof Sip panel.

Probably not going to find one,  6" and 8" steel SIPs can be cantilevered up to 4 feet
Chris Kavala
info@southernsips.com
1-877-321-SIPS
jmagillUser is Offline
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04 Feb 2009 08:32 AM

You can cantilever OSB sips.

 

You will need to deal directly with the SIP company to get the right answer. It will depnd on the engineering and how the SIP is constructed.

There is no one size fits all answer.
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05 Feb 2009 08:03 AM
The first question I always ask is, "how much of an overhang would you like?"

The max overhang will be determined by the answers to the following questions:
1.) Snow loads & Wind loads.
2.) Roof pitch.
3.) Roof framing and direction of the panels.
4.) Using 4' wide or 8' wide panels.
5.) Does the eve detail have a soffit?

With these questions in mind give you SIP company a call.

Jay Shultz
The Murus Company
800-626-8787
Matt B. Phelps, P.E., R.S.User is Offline
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05 Feb 2009 08:37 AM

Do NOT guess!  Most SIP manufactures have span tables that will give you this information based upon the roof load(s) (don't forget to calculate the wind load)!

R-Control has an excellent span table and lots of designers use them.  They will contain all the information you seek.

If you have other ques tons feel free to contact me off line.

Good Luck,

Matt B. Phelps, P.E., R.S.

TDI certified windstorm engineer and inspector
cmkavalaUser is Offline
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05 Feb 2009 08:41 AM
Matt;

wind uplift is the predominent design factor in the Southeast  US coastal areas
Chris Kavala
info@southernsips.com
1-877-321-SIPS
AUSTENNNUser is Offline
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05 Feb 2009 08:52 AM
Thanks I have the R-C book and will revisit it.
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