wind generator input [RE-wrenches]

[Roy Butler, Four Winds RE]

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The drilling and epoxy method are good...but beware of fractured rock.
Might want to go a bit deeper and beefier to compensate for unknown rock 
characteristics.

In worst case scenarios, pre-cast concrete blocks also work....

Have fun...and be sure to significantly derate SWWP's energy production 
estimates for the 3.7!

Roy Butler
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer 
Four Winds Renewable Energy, LLC
8902 Route 46
Arkport, NY 14807
607-324-9747
www.four-winds-energy.com

Although no trees were killed in the sending of this message, 
a large number of electrons were terribly inconvenienced.




Roger Dixon wrote:
> Drill the rock and pin it in various places with rebar and epoxy them in
> place.  Cap the rock with a pad of appropriate size with rebar that is
> attached to the pins in the rock.  Welding the rebar to the pins would be my
> preferred mode.  Best to have an engineer spec what size rebar, pad, kind of
> epoxy, etc., so the legal exposure is on him and not you.  It will also give
> you a solid installation.
>
> Roger Dixon
>
> -----Original Message-----
> From: Eric Andrews [mailto:eric at ecosolarnow.com] 
> Sent: Thursday, June 12, 2008 3:27 PM
> To: RE-wrenches at topica.com
> Subject: wind generator input [RE-wrenches]
>
>
>
> I am looking at my first wind job and looking at feedback on the SkyStream
> 3.7.  For budget reasons, this will probably the pick.  Customer has 12.4
> mph avg. annual wind speed.  The tower seems to be the tricky part, as the
> soil type is rock.  (Looking at guyed 70' by Southwest Windpower)  Anyone
> out there done a tower on rock soil type?  I'm looking for experiences good
> or bad.
>  
> Thanks all,
>  
> Eric R. Andrews
> NABCEP Certified PV Installer
> Klamath Falls, OR 97601
>  
>
> [Non-text portions of this message have been removed]
>
>
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