[RE-wrenches] METAL ROOF ATTACHMENT

[North Texas Renewable Energy Inc]

Wrenches

I'm proposing a PV array on a metal building with L feet attached directly
thru the roof into the purlins. The plan is to use thread cutting SS bolts,
a minimum of ¼-28 pitch. The metal is 14 ga and will engage over 2 full
threads and because the array is only 2 landscape modules on NS rails there
will be 2 bolts for every module. 36 total. Im using a mag base drill press
so the144 holes will be straight & round.
What surprises can I expect or is there an easier way to go about this. Your
2¢ is welcome.

Jim Duncan
North Texas Renewable Energy
486 W.N. Woody Road
Azle Texas 76020
NABCEP Certified Solar PV
Installer No.031310-57
TECL 27398
ntrei at 1scom.net
817.917.0527
www.ntrei.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110421/15087707/attachment-0003.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: North Texas Renewable Energy Inc.vcf
Type: text/x-vcard
Size: 166 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110421/15087707/attachment-0006.vcf>