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Three storey above raised concrete foundation

Last Post 09 Jun 2013 09:06 PM by cmkavala. 23 Replies.

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Alton

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09 Jun 2013 02:42 PM
Posted By Lbear on 09 Jun 2013 02:10 PM . . . Also, when you mention "spans", are you referring to the spans where the SIP would attach/screw down to a beam? For instance, if you have a 25' SIP and you have it attached at 3 points or every 8' (ridge beam, center beam, wall). Would that be viewed as a 25' span or a 8' span? I believe what you have described is called a multi-span. A multi-span chart should be used as opposed to a single span. Although the load can be heavier for a multi-span than a single span, it is still best not to use the maximum load as shown in the chart. Otherwise, deflection and/or vibration may become a problem. Now I await for a comment from Chris.

Residential Designer & Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period . 334 826-3979

cmkavala

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09 Jun 2013 03:43 PM
Alton, agreed, except I have no problem "maxing -out" span charts as they have a "safety factor" of 2.5

Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />

Alton

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09 Jun 2013 08:34 PM
Chris, I did not mean to reflect on your SIPs. I was speaking in a general way like selecting I-Joists or beams.

Residential Designer & Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period . 334 826-3979

cmkavala

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09 Jun 2013 09:06 PM
Posted By Alton on 09 Jun 2013 08:34 PM Chris, I did not mean to reflect on your SIPs. I was speaking in a general way like selecting I-Joists or beams. Alton, no worries , I wasn't taking it personally

Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br />