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When was round reinforcing steel (rebar) first introduced into the construction arena? Have you ever seen square rebar?

By chaskies says Geaux Asked Jun 4 2008 2:54PM
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by Cong on Jun 4, 2008 at 5:34 pm Permalink

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spiraled rebar was common 100 years ago.
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Avatar chaskies says Geaux Jun, 05 2008 at 07:58 AM
thanks for the answer

Answer 2 out of 2

by Anonymous on Apr 4, 2009 at 12:04 pm Permalink

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I have seen round rebar, square rebar and round smooth rod all in the same column of an AC hangar being demo'd at WPAFB in Ohio. Thahangar was built in the 20's. Here's apic of square bar from about 1910 at a ghost town in Arkansas.
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