[RE-wrenches] Roof Loading request for help

[Darryl Thayer]

In Minnesota the State building code will allow a general contractor to satisfy the structural engineering requirement on residential structures.  The commercial structures require a PE,  This seems to be the same for Keith's situation.  
Darryl 
Btw some installers seem to want a PE on there roofs.  But from my experience in one case the PE specified over $100,000 worth of work, and another said no work was required.  I find the variability of recommendations from PE to be widely varying.    

--- On Tue, 7/7/09, Keith Cronin <electrichi01 at yahoo.com> wrote:

> From: Keith Cronin <electrichi01 at yahoo.com>
> Subject: Re: [RE-wrenches] Roof Loading request for help
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Tuesday, July 7, 2009, 7:32 PM
> Allan
> 
> Is this for residential, or residential and commercial?
> 
> Here, commercial systems are generally subjected to
> structural and electrical PE review, while residential is
> not. Or, should I say small scale residential, under 10kW.
> 
> Keith
> 
> From:
> Allan Sindelar <allan at positiveenergysolar.com>
> To:
> RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Sent:
> Tuesday, July 7, 2009 2:26:00 PM
> Subject:
> [RE-wrenches] Roof Loading request for help
> 
> 
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> 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? 
> 
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> 
> Thanks
>  
> 
> Allan
> 
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>   
> 
> Allan
> Sindelar 
> 
> Allan at 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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> 
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