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Re: [TowerTalk] Tack welding rebar

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Tack welding rebar
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Fri, 03 Jan 2014 02:16:03 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 1/3/2014 1:19 AM, Ro Grrr wrote:
Re: Tack welding rebar, need howto
Why make things complicated when working with rebar. The quality of the steel 
is so hit-and-miss that not many will chance welding it.
They invented wire "rebar ties" that are like twist-ties and are sufficient for 
holding it in place for concrete work. They also make a tie-tool which is an offset 
j-shaped hook on a swivel handle to twist the ties. Works slick, too.
"The cage" is simply the resulting form from a practical method of positioning (and holding) the rods in place. As I understand, they would still perform their function even if they were not fastened to each other, However placing that many rods in the correct place while pouring concrete with out welding or tying would not be practical.

"We've done it this way" for so many years the reason has been lost and replaced with a dogmatic approach. Whether welded, spot welded, or tied, It's just a handy way of keeping the rods in place until the concrete sets

With large installations like floors, you don't have to tie up a bunch of certified welders, hauling huge masses of welding cables around over the rerod grid and can train them in minutes while saving hundreds of thousands of dollars. In these cases, tying is much more practical than welding.

73

Roger (K8RI)



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