Galvy in Concrete Was:aluminum in concrete [RE-wrenches]

Dan Whigham, SC Solar DWhigham at scsolar.com
Wed Nov 5 04:02:26 PST 2003


William,

On tracker installations, we usually coat our pipe with a spray on rubber
product used for the under side of cars. It has worked very well and is
available at NAPA Auto parts.

Best Regards,

Dan Whigham
SC Solar
www.scsolar.com
803-802-5522


----- Original Message ----- 
From: "William Miller" <wrmiller at slonet.org>
To: <RE-wrenches at topica.com>
Sent: Wednesday, November 05, 2003 12:52 AM
Subject: RE: Galvy in Concrete Was:aluminum in concrete [RE-wrenches]


> Friends:
>
> I've noticed that one tracker manufacturer or another recommends a section
> of re-bar through the bottom of a pipe mast. I always assumed this was
> intended to keep the mast from loosening in the concrete and rotating
under
> heavy wind loads.   Is this possible?  If I sleeve my masts, or wrap them
> in foam sheets or vinyl, are they more likely to rotate?  Should I cap the
> bottom of the pipe so no concrete to steel contact is posssible?
>
> (These are rhetorical questions.  There would have to be strong evidence
of
> a problem before I would change practices that are tried and true, not
just
> by myself, but apparently by many others on this list.  I feel that
> galvanized steel in concrete is a good practice.  I've seen it extensively
> in RE and communications for structural uses.)
>
> William Miller
>
>
> __________________________________________________________________
> William Miller
> Miller Power and Communications
> PO Box 50, Santa Margarita, CA 93453
> Voice :805-438-5600     Fax: 805-438-4607
> email: wrmiller at slonet.org
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