[RE-wrenches] PV On Corrugated Metal Roof on Steel Building

[Nick Soleil]

I like to bolt through the structural member, but have used toggles in some 
applications.  Of course, you need to download the structural specifications and 
confirm that the toggles are robust enough for the application.

 Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell:   707-321-2937
Office: 707-789-9537
Fax:    707-769-9037




________________________________
From: Jason Szumlanski <Jason at fafcosolar.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Sent: Wed, December 22, 2010 11:25:08 AM
Subject: Re: [RE-wrenches] PV On Corrugated Metal Roof on Steel Building


That’s a good point about the scaffolding. I was thinking about a SnapNRack 
corrugated bracket bolted through the purlins. 5/16 Tek screws to fit the 
bracket may be the way to go – I’ll get the engineer to look at it.
 
I’m hoping to minimize penetrations, yet meet the 130 mph wind speed. Based on 
the pictures I was provided, it looks like the roof will handle the load… we’ll 
see.
 
Thanks for the tip.
 
Jason Szumlanski
Fafco Solar
 
From:re-wrenches-bounces at lists.re-wrenches.org 
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Allan Sindelar
Sent: Wednesday, December 22, 2010 12:47 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] PV On Corrugated Metal Roof on Steel Building
 
Jason,
We have installed to similar buildings using #14 tek screws. If you look into 
their rated pullout strength, you'll find that the large gauges have surprising 
pullout resistance in purlins. And no interior scaffolding is required.
Allan
AllanSindelar
Allan at positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com

On 12/22/2010 10:01 AM, Jason Szumlanski wrote: 
We are working on a contract to put PV on a steel building with a corrugated 
metal roof. The corrugated metal is not a problem – we have solutions for that. 
I am wondering about how to best attach to the structural members.
 
For an idea of what we are up against, see: 
http://www.fafcosolar.com/download/349/IMG_0828.JPG
 
Any suggestions for attachment methods?
 
Jason Szumlanski
Fafco Solar
 
  
  
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