Bending Rebar.


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Old 11-02-08, 04:06 PM
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Bending Rebar.

I need to bend the ends of 1/2" rebor over to make block anchors. Will I be able to do this with a stout hammer?
 
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Old 11-02-08, 04:42 PM
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If you put it in a vice, you should be able to. If you could add some heat. That would make it so much easier. Re-bar is not the best steel you know. I have bent it that way, but some may break.



Travis
 
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Old 11-03-08, 06:52 PM
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Ok. I have it. Gather round and check it out.

You take a 18volt drill and fit it with a 1/2 inch paddle bit. Then you drill a hole into your gate post upward at about 45 degrees. Go all the way through.

Now, insert a piece of your rebar until it touches your finger at the end of the newly drilled tunnel.

Bend.

Bingo. A 4-6 inch hook that will satisfy the guy from the county.

I don't know what to tell you about the new shelf life of your gate post. You're on your own there.
 
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Old 11-03-08, 07:50 PM
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Bending Rebar.

What do you mean by a "block anchor"? It is not in a code or reasonable Google search. I have seen great block anchors that were tied to a rope that was attached to a fishing boat.

Are you trying to bend rebar for a dowel that will be lapped with the vertical reinforcement from a footing that will go upward into the block wall?

Are you trying to bend rebar for horizontal reinforcement around a corner in a block wall?

Do you just have to just get bend in it or does it need to be done to meet some code?

If you are after an anchor bolt, the best thing is a long threaded rod with a 2 large washers and bolt.

Dick
 
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Old 11-04-08, 10:49 AM
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Lots of questions. I used out local vernacular for pier dowels. I was simply trying to bend a reasonably straight "L" in 4' foot pieces of bar to use as dowels in my filled block piers.

Got it covered. I sometimes forget that I'm from a backwards-a** country county and type the way we say it over the fence.

Same with the threaded rod. I'm going to bend the ends but now I like the sound of using big square washers as anchors. Seems like I could drive the end of the rod very accurately into the ground exactly along the curtain wall line.
 
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Old 11-04-08, 11:01 AM
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Whatever you do, don't ever heat rebar to bend it.
 
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Old 11-04-08, 11:06 AM
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Tscar...why is that? Loss of strength?
 
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Old 11-04-08, 03:37 PM
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Temper, it becomes brittle.
 
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Old 11-04-08, 03:56 PM
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I am going to have to disagree with it being brittle. I have bent re bar with heat, and had to come back and re-bend it in the same place, and it did not break.

If it is allowed to cool slowly,in sand or oil, or on a summer day.
The temper is not changed enough to tell anything happened.

That is just my experience with heating re bar.
 
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Old 11-04-08, 06:04 PM
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2 things, Street-rod. First, controlled cooling can control the tempering, and second, reheating it to rebend it does not illustrate brittleness. Heat rebar, let it cool, then try and rebend it without re-heating it. In the wall, there is no reheat. It is not an acceptable practice to heat rebar to bend it and use it in concrete, period.
 
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Old 11-04-08, 09:07 PM
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I did not mean to argue. I was just stating my own experience with it. I did re bend it without heat. It was used in a footing for a brick fence. I know when steel is heated and cooled, it changes the temper. I have made a lot of custom tools for my work. And if not done right, it will become brittle and break.
The question was, how to bend re-bar.
I used heat. It made it easier for me to do. I just passed it on. It was just my opinion.



Travis
 
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Old 11-04-08, 10:29 PM
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Rebar bends easy enough. It is cold rolled.
 
 

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