[TowerTalk] Tack welding rebar, need howto (was: Tower Foundation (was Concrete Prices)
patrick_g at windstream.net
Fri Jan 3 09:39:11 EST 2014
Rick, Is it safe to assume (yeah, I know how to humorously dissect the word)
that tack welds at the ends of lengths of rebar to hold things in place
would not particularly cause a problem with strength reduction. This of
course world be an entirely different thing if you were welding a length of
rebar mid span. Tensile strength is important and you don't want to make
the rebar easy to stretch as that would defeat its purpose.
What say, Rick? Ok to weld the ends of rebar to the ends of other pieces.
From: Rex Turvin
Sent: Thursday, January 02, 2014 6:03 PM
To: Richard (Rick) Karlquist
Cc: towertalk at contesting.com ; Grant Saviers
Subject: Re: [TowerTalk] Tack welding rebar, need howto (was: Tower
Foundation (was Concrete Prices)
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
Sent from my iPhone
> On Jan 2, 2014, at 3:27 PM, "Richard (Rick) Karlquist"
> <richard at 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
> TowerTalk mailing list
> TowerTalk at contesting.com
TowerTalk mailing list
TowerTalk at contesting.com
No infections found in this incoming message
Scanned by iolo System Shield
More information about the TowerTalk