All
Welding rebar is not for your average Ham Radio doofi.
You need the right steel, the right sticks, the right wire/gas if MIG
welding, the correct technique (the hard part).
A welded connection when done right will be stronger that either the
base metal and weld medium used to make it. You are creating an alloy
when you weld. You don't need that for a tower base.
If welding rebar were the magic bullet they'd be doing it everywhere.
They aren't.
Below is the way it's supposed to be done.
On 5/5/2017 6:54 PM, Shawn Donley wrote:
Here's what I did. I found a local company that would supply, cut and bend
the rebar per the cage design specs. They had the professional machinery to do this
properly and accurately. That's the hard part. Took it all home in my pickup truck
and put it together on-site using conventional rebar wires ties. I did order several
pieces of small diameter rebar and tied them on as diagonals on each side to provide
rigidity and have the cage hold it's shape. Had the backhoe guy lower it into the
hole after excavation, laying it so that each vertical rebar was on thick concrete
pavers to keep the rebar from touching dirt (a bad thing which will cause the rebar to
rust, expand and fracture the concrete). Also want at least 3.5 inches between the
cage and the dirt sidewalls for the same reason.
Good luck with your project.
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--
R. Kevin Stover AC0H
FISTS #11993
SKCC #215
NAQCC #3441
ARRL
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