Wind tower engineering [RE-wrenches]

[Lynne A Carter]

Hi Joe,
We had the same thing happen here in Alamance county NC,  The building
inspector made us get the tower stamped by NC PE so we did I had John at
Lake Michigan wind and sun to send all the literature to the PE I cost us
$600 then we did it all over a gain in a another county this time a smaller
tower and still $600 for that stamp.  What a shame, sounds like you got off
lucky.  Now the Inspectors call the county before to use them as a
president.  Each time a wind tower goes up in NC it gets a little easier.
Lyn
----- Original Message -----
From: Joe Schwartz, Home Power <joe.schwartz at homepower.com>
To: <RE-wrenches at topica.com>
Sent: Monday, February 05, 2001 8:27 AM
Subject: Re: Wind tower engineering [RE-wrenches]


> Hey William,
>
> >I am preparing the building permit application.  The building department
> >needs to see some engineering.  I thought I could use the Rohn
> >specifications on what loads it would support at the specified wind
> >velocity (I believe our building department uses 100 mph) and show that
the
> >503 does not present near that much load.  I was hoping to avoid the
> >expense of additional engineering.  Rohn has their own engineers that
have
> >already calculated these tower capabilities.
>
> I went through the permitting process in S. Oregon for an old Jacobs
> tower. We couldn't dig up any manufacturer's specs for this tower. So
> you're ahead of the game here.
>
> What the County Planning/Building  Dept. is primarily concerned with
> is the tower's footing. These specs vary from county to county and
> state to state. Different locations obviously have different soil
> types, are in different seismic zones, and are in different wind
> regimes. So Planning Departments often require engineering specific
> to the site. Or at least specific to the county.
>
> After talking with the county planner, I put together a specific list
> of engineering criteria the county required. Took this to a local
> mechanical engineer and said, "All I need are numbers for these four
> criteria." I spent $250 for the engineering the county required. It
> wasn't cheap, but seems pretty reasonable. Having the list together
> made it easy for the engineer and less expensive.
>
> Joe Schwartz
>
>
> -------------
>
> Joe Schwartz
> Home Power Magazine
> PO Box 520, Ashland, OR 97520  USA
> email:joe.schwartz at homepower.com
> Web: http://www.homepower.com
>
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To check out the other RE-Wrench participants:
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For info contact list moderator by email:
 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01