Select the most correct statement about spiral reinforcement in concrete columns
A. prevents buckling by bracing the longitudinal bars, B. used in round shaped columns onlyC. assists the longitudinal bars in bearing compressive load, D. does not act to confine the concrete in the column, E. is the same as a "tied" column
Answer is A. prevents buckling by bracing the longitudinal bars. Spiral reinforcement also helps confine the concrete.
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