Generally it is best not to but sharp bends in rebar. Minimum recommended
bend radius is about 6 - 8 times the bar diameter. If you bend it sharper
than
you risk getting cracks in the outside edge.
Rebar is generally not that great a material - it is just much stronger in
tension
than the concrete we bury it in.
My preferred bending tool is an electricians hickey or conduit bender. I have
manual sizes up through 1" conduit which with an extra long handle and
a few friends have successfully bent 3/4 inch rebar. Anything bigger, and I
find
a shop with a power bender.
de n0yvy steve
At 07:46 AM 9/14/98 -0400, Brian Smithson wrote:
>
>Greetings!
>
>I'm starting on the rebar cage for my tower base. Any tips on bending
>it? I'd like a couple right-angles and my 'initial tests' with a vice
>haven't
>resulted in as sharp a bends as I'd like. Any tips?
>
>Thanks in advance!
>
>-Brian
>brian_smithson@vds.com
>
>
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