Rick
Speaking as a certified welder, technically speaking you are suppose to use the
higher grade rebar when welding it as the normal rebar looses a lot of strength
when heated.
I am also required to use 80 series rod (80,000psi) for rebar. That is why it
is so expensive to do when welding.
I personally like to weld my cages it prevents movement. If you use a wire
welder either solid wire or flux core it also it suppose to be a 80 series per
welding codes
73 NR6M
Sent from my iPhone
> On Jan 2, 2014, at 3:27 PM, "Richard (Rick) Karlquist"
> <richard@karlquist.com> 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.
>
> 2. Gas weld or arc weld? How big of an arc welder needed?
> Can I get away with a MAPP gas torch?
>
> 3. What welding rods to use?
>
> 4. What if the bolts happen to be galvanized? Grind
> off the galvanizing near the weld?
>
> 5. Can this be done by a novice welder? (I took a
> class on welding in college 40 years ago, so I know
> just enough to be dangerous). Any stupid rookie
> mistakes to avoid?
>
> 6. Alternately, if I go to a welding shop, are they
> going to know what to do or do I need to go to a
> concrete company that makes rebar cages all the time?
>
> 7. I am mainly interested in using tack welding to keep
> the bolts from moving. The jury is still out on whether
> to weld or wire the rest of the cage. I just don't
> trust wiring as being rigid enough to fix the bolts
> in place.
>
> Thanks in advance.
>
> Rick N6RK
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