[RE-wrenches] Racking for Steep Roofs

[Jay]

Unirac used to come with a small bolt set to "lock" the end clamps. They seemed to have stopped sending them some ago however. 
Jay
Peltz power. 

Sent from my iPhone

> On Oct 16, 2015, at 2:27 PM, Garrison Riegel <garrison at solarserviceinc.com> wrote:
> 
> Thanks Allan.  I’ll see if I can get those values from IronRidge or UniRac.  If not Pro Solar or SnapNrack look like they both could work well.
>  
> Thanks again all. 
>  
> Garrison
>  
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan Sindelar
> Sent: Thursday, October 15, 2015 5:15 PM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] Racking for Steep Roofs
>  
> Garrison,
> I'm here in a campground in the Emerald Triangle with Jeff Spies, who works for Quick Mount PV, and so I read him your message. He suggested that you take the engineering specs from UniRac and IronRidge to the AHJ, showing her pullout and shear capacities and calculate both for your site, including snow and wind loads. The maximum applied load should be less than the published working load rating.
> 
> If the AHJ doesn't accept this approach, the next step is to get a structural engineer to review the same and wet-stamp the result.
> 
> This legitimately gets around the manufacturers' certification issue on an individual case basis.
> 
> Allan
> 
> Allan Sindelar
> allan at sindelarsolar.com
> NABCEP Certified PV Installation Professional
> NABCEP Certified Technical Sales Professional
> New Mexico EE98J Journeyman Electrician
> Founder (Retired), Positive Energy, Inc.
> 505 780-2738 cell
> 
>  
> On 10/15/2015 1:50 PM, Garrison Riegel wrote:
> Thanks for the responses. 
>  
> I called UniRac and IronRidge who both confirmed they max out at 45°.  UniRac said anything over 45° is considered a wall and requires different testing and certification.  They said the primary concern is the end clamp which holds the module by friction only.  Mid clamps should hold no problem.  They suggested getting an engineer to stamp a custom bolted end clamp solution and we should be good.    
>  
> I’ve been looking for a good excuse to try Snap n Rack…
>  
> Thanks,
> Garrison       
>  
> From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Aram Alexander
> Sent: Wednesday, October 14, 2015 7:39 PM
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] Racking for Steep Roofs
>  
> Pro solar will work just fine.
> 
> Aram 
> 
> On Oct 14, 2015, at 2:56 PM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:
> 
> I would suggest calling unirac as it may be a software issue that uou are having but they will confirm eitherway
> Jerry
> 
> On Oct 14, 2015 9:25 AM, "Garrison Riegel" <garrison at solarserviceinc.com> wrote:
> Wrenches,
>  
> Can anyone recommend a flush mount racking system for really steep roofs?  I have two projects coming up on 15/12 (~51°) and none of the usual manufacturers we use for flush mounts (IronRidge XR, Unirac SolarMount, Schletter Solo, DPW Powerrail) can handle this apparently…at least according to their design tools and manuals.
>  
> Any advice would be much appreciated.
>  
> Thanks,
> Garrison
>  
> Garrison Riegel
> PV Operations Manager | Solar Service Inc
> [p] 847-677-0950 | garrison at solarserviceinc.com
>  
> NABCEP Certified PV Installation Professional™
>  
>  
>    
> 
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