Allan,
Check out my website at www.brooksolar.com/services. The recent Expedited Permit Process that I helped produce for the US Dept. of Energy is on that page in pdf that you can download. It explains the rationale behind why anything under 5 PSF is fine if the roof structure is standard (engineered trusses or typical rafter roof). Read it over a share it with your jurisdictions. We are going to be maintaining the most recent version of that document on the www.solarabcs.org website on their "documents" tab. It should be posted soon. It also requires that you use a standard engineered racking system such as DPW, UniRac, or ProSolar. Bill. From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan Sindelar Sent: Tuesday, July 07, 2009 5:26 PM To: 'RE-wrenches' Subject: [RE-wrenches] Roof Loading request for help Wrenches, We are currently facing a city permitting bureaucracy that has recently discovered solar - that is, suddenly each department in the permitting and plan review departments is coming up with standards for PV systems. Some of the standards, of course, make no sense. PV systems typically add about three pounds per square foot to the loading on a roof. We are facing a city requirement for structural engineering work for standard roof attachment if the mounting approach is to make penetrations into the roof structure. This is a typical requirement that will only add considerable cost to each PV system, and we're looking to have our ammunition to fight this well stocked in advance. Specifically, are building authorities in other jurisdictions requiring structural engineering work for this type of roof attachment? Thanks Allan Allan Sindelar al...@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
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