Concrete column sprial vs square reinforcing

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    atuter
    Keymaster

    I need to understand something about the design of concrete columns. When I was studying engineering we were thought that the spiral rebar design therefore a circular column is more efficient in terms of strength to cost ratio. Now why do we find mostly square sections instead of circular columns? Is it because forming is easier and it compensates the cost or architecturally square sections are more desirable?

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