the guy bending some rebar wants me to tell him what radius .

well , the paint can is 4 inches across the top of the can and that looks like a good curve.

so what do I tell him?

It's a 90 degree bend in some re bar.

If the can is 4” in diameter then the radius is 2”

“The sum of the square root of any two sides of an isosceles triangle is equal to the square root of the third side.”

quote:

Originally posted by nhtagmember:
If the can is 4” in diameter then the radius is 2”

well thats what I came up with , but I thought I should double check , thanks

quote:

Originally posted by bendable:
the guy bending some rebar wants me to tell him what radius .

well , the paint can is 4 inches across the top of the can and that looks like a good curve.

so what do I tell him?

It's a 90 degree bend in some re bar.

nhtagmember has the answer if you to use that 4” can as your template. The diameter is twice the radius.

I’d guess that a welder is going to use a vice and a piece of pipe to wrap the rebar around to get the radius you’re looking for, but I’d ask him how he’s going to do it. If the curve isn’t critical to you, I’d tell him that you looked at a paint can that was four inches in diameter and that looked like a good curve, but anything close to that is fine if the bends are consistent. He may have a tubing bender that is not too far away but not exactly a 2” radius. If the radius isn’t critical to you that might give you a more consistent curve with less effort by him. Just a thought...

What size bar is it?

quote:

Originally posted by nhtagmember:
If the can is 4” in diameter then the radius is 2”

or is it???

quote:

What size bar is it?

it will be 13 feet long with the 90 deg bend at
the 11 ft. mark.

https://www.menards.com/main/b.../p-1444449833566.htm

quote:

Originally posted by Keystoner:
What size bar is it?

This!

When he asked what size it was he meant what is the diameter of the rebar. Based upon that dimension, the table shows the diameter (from which you can get the radius) for a 90 degree bend. If this is being used for its intended purpose of structural reinforcement, then following this guide is very important. If not then whatever you think looks good is fine.

Your link leads to a #5 rebar, which requires a diameter of 3-3/4 which is a radius of 1-7/8.

Well it’s not just a simple 2” bend. He is going to have to calculate an offset to account for the diameter of the rebar. If I recall it’s a bend ya get radius. So he will start the bend at 2”+ an offset for each bend. That will give a 4” inside diameter

quote:

Originally posted by parallel:
If this is being used for its intended purpose of structural reinforcement, then following this guide is very important. If not then whatever you think looks good is fine.

Your link leads to a #5 rebar, which requires a diameter of 3-3/4 which is a radius of 1-7/8.

You wouldn't want to go less than the diameter specified in the table. For that #5, 4" diameter/2" radius is fine.

quote:

Originally posted by cas:

That was rather humerus.

Tickled your funny bone it did?

Might need a carpal of those ...