Tubular towers and PV mounting [RE-wrenches]

[Matt Tritt]

Hi Hugh,

This is to be a free-standing tapered monopole so the extra loading really
is an issue.

Matt T
----- Original Message ----- 
From: "Hugh Piggott" <hugh at scoraigwind.co.uk>
To: <RE-wrenches at topica.com>
Sent: Sunday, November 16, 2003 3:04 PM
Subject: Re: Tubular towers and PV mounting [RE-wrenches]


> At 1:02 AM -0500 16/11/03, Jeff Clearwater, Village Power Design wrote:
> >With two loads pushing from the side you can get some complicated
> >resonance action.
>
> If the PV array is located at a guy attachment level then the side
> loading will not be an issue in terms of pipe bending loads.  The PV
> array will not introduce vibration into the structure either.  All
> that remains is the mass of the array and its effect on tower
> resonance.  Once again, if the array is at a guy level then it is
> hard to see that extra mass at this nodal point would have any
> significant effect.
>
> >- don't guess - hire a structural engineer to stamp this one!
>
> I would say it depends on the customer.  It's an extra expense, and
> in my opinion hardly justified.  But some jobs have plenty of money
> for that sort of stuff.  It's known as covering your @&5#.
>
> If your wind turbine is "maxing out" the tower, then later on someone
> will be looking for an excuse for failures, but the mistake was to
> use a turbine that behaves like that to begin with.
>
> -- 
> Hugh
>
> in Edinburgh
> http://www.scoraigwind.co.uk/
>
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