A 500 mm square concrete column carries factored ultimate column loads of PU = 580 kN and
MU = 30 kN@m. The vertical service load is 490 kN. It is to be supported on a square footing
with f′
c = 20 MPa and fy = 420 MPa. The soil has an allowable bearing pressure for bearing
capacity of 650 kPa (based on LRFD methods) and an allowable bearing stress for settlement
of 280 kPa. The groundwater table is at a great depth. Determine the required footing, width,
thickness, size of the flexural reinforcement, and show your design in a sketch.