the S-5 solution to standing seam roofs? [RE-wrenches]

[max Balchowsky]

Marco, we've used "beam clamps" for numerous applications for years in the
electrical trade. This would work well for that application, in fact we have
a 250 KW system sched for next year amd I was planning on specing a beam
clamp fastener for what will be a 2 inch standing seam.  The engineering can
probably be obtained from the manufacturer as far as pull strength......

http://www.phoenixfastener.com/viewindex.asp?cat=3

Max

----- Original Message ----- 
From: "marco mangelsdorf" <marco at pvthawaii.com>
To: <RE-wrenches at topica.com>
Sent: Sunday, August 10, 2003 10:53 AM
Subject: the S-5 solution to standing seam roofs? [RE-wrenches]


> Here in Aloha land we've got a lot of standing seam metal roofs.  Rather
> than going down through the flat part of the metal roof to attach PV
> mounting hardware into a structural member (i.e., steel z-bar purlins),
one
> seemingly attractive option would be to use this S-5 clamp from Dynamic
> Fastener.  The S-5 clamp is essentially a machined block of aluminum which
> bites down on the standing seam with a couple of SS bolts.  The mounting
> rails are then bolted down onto the S-5 block.  Have any of you all used
> this kind of hardware?  Have any of you had any engineering done on it in
> terms of pull-off strength in 80+ MPH winds?  Intuitively, this attachment
> means SEEMS pretty solid especially when the alternative is lots of roof
> penetrations into the flat parts of the metal roof.  (FYI: we get an
average
> of 130 inches rain/year here in humid Hilo.)  But then doing commmerical
PV
> systems based on intuition is not a real smart idea...
>
> aloha, marco
>
> Marco Mangelsdorf
> President
> ProVision Technologies, Inc.
> 69 Railroad Avenue, A-7
> Hilo, Hawai'i 96720
> (808) 969-3281, 934-7462 facsimile
> www.provisiontechnologies.com
>
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