On 1/2/2014 6:19 PM, Grant Saviers wrote:
On 1/2/2014 2:27 PM, Richard (Rick) Karlquist wrote:
On 1/2/2014 11:02 AM, Grant Saviers wrote:
Tack weld the bolts together with #3 rebar when attached to the base so
they don't move when set without the base to make concrete work easier.
Grant KZ1W
Can anyone refer me to a Dummy's guide to welding rebar?
1. I have heard that I have to use special weldable rebar.
What do I ask for? I'm assuming that the common rebar
at Home Depot, etc is not it.
That depends on your view of how strong the rebar in a tower
foundation really needs to be. All are weldable, it is how much the
welding affects the heat treating and thus the yield strength. HD
rebar might be ungraded or grade 40, 40ksi yield and A706 is the
official weldable rebar. I think it is pretty common to weld up
common rebar, and it might reduce the yield strength by 15 to 20%.
2. Gas weld or arc weld? How big of an arc welder needed?
Can I get away with a MAPP gas torch?
A 120v 130amp MIG or bigger with flux core wire will work,
Why flux core. MIG uses a cover gas and I don't see the flux serving a
purpose with steel?
Rerod's main function is to keep the concrete from breaking.
73
Roger (K8RI)
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