thomassargent
New Member
Posts:17
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| 07 Apr 2011 07:34 AM |
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Location: Maine. Proposed building is 32 x 36 with a shed style roof. Roof support is 32' laminated beams spaced at 12 feet apart and supported halfway at 16 feet. SIPS would span approximately 12 feet. Would a 12" sip using double 2x splines carry the load without additional support? Thank you in advance for your comments!
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cmkavala
Veteran Member
Posts:4324
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| 07 Apr 2011 08:32 AM |
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Posted By thomassargent on 07 Apr 2011 07:34 AM
Location: Maine. Proposed building is 32 x 36 with a shed style roof. Roof support is 32' laminated beams spaced at 12 feet apart and supported halfway at 16 feet. SIPS would span approximately 12 feet. Would a 12" sip using double 2x splines carry the load without additional support? Thank you in advance for your comments!
not in Maine with snow load, but the problem is not only the load, you would be hard pressed to find 32 ft. OSB (plus overhang/pitch), 24 ft. is common and I have seen 28 ft. |
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| Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br /> |
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thomassargent
New Member
Posts:17
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| 07 Apr 2011 09:06 AM |
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I was planning to use just 12x4 foot sips, meeting over the beams. I had read on another thread here that using the double 2x splines was equivalent to having those same 2x's as support 24 on center. So, 2x12 24 oc, would be considerable. |
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cmkavala
Veteran Member
Posts:4324
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| 07 Apr 2011 03:25 PM |
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Thomassargent;
I mis understood your question, I thought you wer trying to span the entire distance with 12"/2x splines, 12 ft. seems pretty short for 12" and no spline appears reasonable. what is your snow load? |
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| Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br /> |
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Alton
Veteran Member
Posts:2157
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| 07 Apr 2011 04:30 PM |
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Have you considered 6" thick full length metal skin polyurethane filled SIPS? With your snow load you will still need beams under the SIPS. What pitch will the shed roof be? Are there any manufacturers close to your location? 2x's would not be required to join the metal SIPS. If you use OSB SIPS with full wood splines, then won't the spline area lack insulation? |
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Residential Designer &
Construction Technology Consultant -- E-mail: Alton at Auburn dot Edu Use email format with @ and period .
334 826-3979 |
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thomassargent
New Member
Posts:17
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| 07 Apr 2011 04:31 PM |
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60 lbs. Ground snow load. |
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jrquinn57
New Member
Posts:18
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| 07 Apr 2011 05:32 PM |
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12" SIPs with a 12' span would easily meet your snow load requirements.
Joe Quinn
Enercept SIPs
(800) 658-3303
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thomassargent
New Member
Posts:17
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| 09 Apr 2011 08:19 AM |
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Ok, now to limit thermal bridging. Will a single 2x spline, tji spline or preferably simple osb spline work best. |
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thomassargent
New Member
Posts:17
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| 09 Apr 2011 08:35 AM |
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Also I am planning the same layout for a 10" SIPS "floor" over an unheated garage. This will have a 2 1/2 to 3 inch pour of lightweight concrete for in-floor radiant heat. This is approximately 24 psf of dead load. From our discussion above it seems that the layout will work, agin which connection method will be best to limit thermal bridging. Thanks again to everyone for their comments. |
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cmkavala
Veteran Member
Posts:4324
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| 09 Apr 2011 06:02 PM |
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Posted By thomassargent on 09 Apr 2011 08:35 AM
which connection method will be best to limit thermal bridging. the same connections that are used in commercial cold storage buildings |
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| Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br /> |
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thomassargent
New Member
Posts:17
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| 11 Apr 2011 07:04 AM |
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Chris, I am assuming that would be a steel sip with non-thermal bridging metal spline. Unfortunately, metal sips are not available in my area and shipping is prohibitive. Would you say that an osb sip with plywood spline would also be adequate for the load discussed? |
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cmkavala
Veteran Member
Posts:4324
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| 11 Apr 2011 08:28 AM |
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thomassargent;
many aluminum or steel SIPs do not use splines and are solid core at the connection with no thermal transfer, yes a plywood spline would be acceptable for the short span. Make sure the joint is well sealed to prevent condensation and rot.
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| Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br /> |
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ICFconstruction
Veteran Member
Posts:1323
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| 15 Dec 2018 03:20 PM |
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I am considering a cabin in northern WI, for ourselves . My initial thought is 24-28 wide with a shallow pitch (3:12) shed roof on ICF walls. I am wondering what span can be achieved with a osb roof SIP. I-joist spline sips? I would like to avoid a beam and posts. Also the limitations for self-supporting eves. Do you have some design tables for that application? How about a gable roof? The snow load minimum is 40psf, although I would like to be ready for more. Dead load for metal roofing is minimal. |
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| Brad Kvanbek - ICFconstruction.net |
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cmkavala
Veteran Member
Posts:4324
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| 17 Dec 2018 12:49 PM |
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Posted By ICFconstruction on 15 Dec 2018 03:20 PM
I am considering a cabin in northern WI, for ourselves . My initial thought is 24-28 wide with a shallow pitch (3:12) shed roof on ICF walls. I am wondering what span can be achieved with a osb roof SIP. I-joist spline sips? I would like to avoid a beam and posts. Also the limitations for self-supporting eves. Do you have some design tables for that application? How about a gable roof? The snow load minimum is 40psf, although I would like to be ready for more. Dead load for metal roofing is minimal.
We just shipped 12" x 31'-0" panels to Shawano , WI. at 40PSF will span 16' it was attached to an ICF building the owner will use the Permatherm panels as the interior and exterior finish it is a 50 x 100 residence with about 1/3 of the vaulted roof over an indoor swimming pool |
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| Chris Kavala<br>[email protected]<br>1-877-321-SIPS<br /> |
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KevinCasey
New Member
Posts:21
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| 03 Jan 2019 11:39 PM |
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To my knoldge there are three OSB SIPs manufacturers that have published load design charts that are contained within thier ICC-ES code reports that cover the spans that you have indicated. So if you are working with an architect to produce your plans I am sure that he can review the documents and make an educated determination of what thickness panel will work for you and to meet the design criteria for your area. The charts will indicte the type of splines you will need to use for the seams of the panels.
With that being said, most manufacturers offer engineered stamped panel drawings with thier pre-cut pckages today so which ever manufacturer you select you should be covered. If you want me to send you the charts I would be glad to. Just send me your email address. |
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