Towertalk
[Top] [All Lists]

Re: [TowerTalk] Tack welding rebar

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Tack welding rebar
From: David Gilbert <xdavid@cis-broadband.com>
Date: Fri, 03 Jan 2014 20:53:03 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

That's a long-debunked urban legend. Don't believe me? Do some web searching, including the archives of this very forum.

Besides, there is nothing ... nothing ... in any description of a Ufer ground that requires welding the rebar together. Crossed and tied connections do just fine.

73,
Dave   AB7E



On 1/3/2014 7:52 PM, Stan Labinsky Jr. wrote:
On another tack, from what I've read, not having the rebar interconnected, that is, welded to itself and to the tower bolts is a recipe for concrete block destruction from steam bursts during a lightning strike, when strike current jumps over the poor/marginal interconnects and creates huge point sources of heat within the block.

Welding also makes the block into a Ufer ground.

Stan

-----Original Message----- From: Patrick Greenlee
Sent: Friday, January 03, 2014 9:35 PM
To: towertalk-bounces@contesting.com ; towertalk@contesting.com
Subject: Re: [TowerTalk] Tack welding rebar

Maybe the majority would have to lug lots of heavy gear but I have a plasma
cutter, 180 amp Mig, AC/DC stick welder, grinder, vise, O-A bottles,
Argon-CO2 bottle, 14 inch cutoff saw, and on and on and on all on my single
axle welding trailer which is not hard to hitch up and get close to just
about anywhere on the ranch including antenna farm endeavors. I don't think
I am unique.

Point 2: wire tied cages of rebar are not nearly as robust as welded. It is darned inconvenient to have rebar messed up under the forces involved in pouring concrete. Dimensional tolerances are much easier to maintain with weldments. Wire tied rebar is a very good thing with flat work like slabs,
aprons, patios, sidewalks, and the like but more 3 dimensional work is
sometimes approached easier and with more confidence with at least some
welding. Must you weld? NO, but if you can it is sometimes better for any
of several reasons.

Patrick NJ5G
_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk


_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>