[TowerTalk] TowerTalk Digest, Vol 36, Issue 79

[K7LXC@aol.com]

In a message dated 12/28/2005 11:05:26 A.M. Pacific Standard Time,  
towertalk-request at contesting.com writes:

jimlux at earthlink.net>
Subject: Re: [TowerTalk] Fw: Re:[AR902Mhz]  Tower Installation
To: "larryjspammenot at teleport.com"  <larryj at teleport.com>,
towertalk at contesting.com
Message-ID:  <6.1.1.1.2.20051228095300.036fca40 at mail.earthlink.net>
Content-Type:  text/plain; charset="us-ascii"; format=flowed

At 08:33 AM 12/28/2005,  larryjspammenot at teleport.com wrote:
>This is forwarded from the AR902Mhz  mailing list. See the very bottom 
>paragraph about building the rebar  cage. Somehow, I always thought that 
>the rebar cage in a concrete  tower foundation was NOT to be welded 
>together, just tied with some  kind of wire ties. Did I miss something 
>along the  way?
>LJ


Those iron oxide diodes are embedded in a fairly  conductive block of 
concrete that probably has lower resistance than the  diodes, so it's 
probably not an issue.

However as far as welding  goes, rebar CAN be welded, but it takes a special 
technique, and requires  some knowledge of the bar material and the right 
welding rod.  This  isn't a "get the old buzz box out and tack everything 
together" kind of  operation.  And, as always with structural kinds of 
things, you need  to talk to your local regulators.  There's been enough 
disasters with  welded rebar that there is some sensivity to the  issue.