Paul, We have used the S-5! clamps on standing seams in the past. We like putting the modules directly on the seams with the S-5! clamps, no rails. First, speak with the engineer who designed the building and roof to make sure the roof is attached securely to the perlins and building structure. Second, make sure you obtain the correct S-5! clamp; they make several styles to fit different seam profiles. Third, make sure your crew torques each S-5! set screw to the recommended torque; let the fasteners sit and then make your crew torque them again. Fourth, the advised mounting method is to have the modules' long edge perpendicular to the roof seam (i.e. landscape) and a clamp on every seam that the module crosses. This means you need *six* clamps per module, not four. Fifth, to help with layout, use a taught string to lay down all of the clamps that make up the first row. Six, with such a low sloped roof and New England conditions, you are going to see a lot of dirt buildup on the modules after about six months; you may want to advise your client to clean them (or have them cleaned) on a regular schedule. Seventh, wire management on this type of a system is a real pain because of the limited access space under the modules; if you find a good way to manage module to module connections, let me know.
Good luck, Mike -- Michael Kelly Project Manager / Project Engineer NABCEP Certified Solar PV Installer ™ SolarFlair Energy, Inc. 11 Mayhew Street Framingham, MA 01702 Direct Mobile: 617-899-9840 Main Phone: 508-293-4293 Main Fax: 508-293-4003 [email protected] On Wed, Aug 26, 2009 at 11:44 PM, Max Balchowsky <[email protected]> wrote: > > check the specs on how the roof is attached to the building..... > > ________________________________ > From: Paul Lyons <[email protected]> > To: [email protected] > Sent: Wednesday, August 26, 2009 3:32:17 PM > Subject: [RE-wrenches] S-5 clamps on the standing seam roof > > Hello RE-Wrenches – > > > > We are working on the design details for S-5 clamps on a standing seam roof > with the PV modules mounted directly on the clamps at four points (i.e. no > horizontal rails). The roof is made by Metl Span of Lewisville, Texas. The > building is in New England and the roof has a slope of 0.5:12 > > > > Have any of you had experience with these clamps and/or this particular roof > manufacturer? > > > > Paul Lyons, P.E. > > Zapotec Energy Inc. > > 675 Massachusetts Ave > > Cambridge, MA 02139-3309 > > Tel: 617-547-5900 ext.201 > > Fax: 617-547-5901 > > Mobile: 617-285-0634 > > Email: [email protected] > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
