Design a square concrete column footing to support a 400-mm x
400-mm reinforced concrete column. The center of the column and
footing must coincide. Loads: ???=350 ??, ???=480 ??, ???=100 ??−?,
???=130 ??−? Column Design Criteria: ??′=28 ???, ??=400??? Footing
Design Criteria: ??′=28 ???, ??=400???, ??=180 ???,??=1.70 ?, ??=16
??/?3,??=24 ??/?3, ??=25 ??, assume a thickness of the footing of
700 mm.