A rectangular concrete pier cross-section indicates vertical rebar running full height with a maximum spacing of eighteen inches on center. Horizontal ties enclose the vertical bars, requiring seven-eighths inch clear cover to ties typically unless noted otherwise. Horizontal ties are spaced at twenty-four inches on center for the remainder above and below openings or recesses, and extend two feet six inches at openings or recesses. Edge bar substitution requires reference to panel elevations where necessary.
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