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Re: "Non-penetrating" roof support for Solar PV

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In high seismic region, ballast alone may not be enough to resist lateral forces. There must be some way to anchor the panels to some external wall system. Recall that friction resistance is not allowed to counter seismic force. 

--
Milo Zabala, PE


On Jan 21, 2011, at 9:46 AM, Krupakaran Kolandaivelu <krupk(--nospam--at)advantageengineers.com> wrote:

> Non-Penetrating roof support for Solar PV is achieved by ballast loading, for resisting wind (uplift & drag) forces. Usually the wind forces for the solar modules are calculated by method 3 of ASCE7-05 section 6.6 wind tunnel procedure. Typically concrete pavers on paver trays are used on the roof.                  
> 
> Krup Kolandaivelu, P.E.
> Lansdale, PA.
> 
> -----Original Message-----
> From: Milo Zabala [mailto:milozabala(--nospam--at)yahoo.com] 
> Sent: Friday, January 21, 2011 12:17 PM
> To: seaint(--nospam--at)seaint.org
> Subject: "Non-penetrating" roof support for Solar PV
> 
> Folks, 
> Any ideas about this "non-penetrating" support system for solar panels over the roof? It is required due to some leakage and other liability issues. 
> 
> --
> Milo Zabala, PE
> 
> 
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