[TowerTalk] Tack welding rebar
xdavid at cis-broadband.com
Fri Jan 3 22:53:03 EST 2014
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.
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.
> -----Original Message----- From: Patrick Greenlee
> Sent: Friday, January 03, 2014 9:35 PM
> To: towertalk-bounces at contesting.com ; towertalk at contesting.com
> Subject: Re: [TowerTalk] Tack welding rebar
> Maybe the majority would have to lug lots of heavy gear but I have a
> 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
> 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
> 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
> weldments. Wire tied rebar is a very good thing with flat work like
> 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
> of several reasons.
> Patrick NJ5G
> TowerTalk mailing list
> TowerTalk at contesting.com
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