In: Civil Engineering
Design a strap footing to support the two columns. These structural elements are spaced at a distance of 4.5 m center to center. Exterior column is 400 mm x 400 mm and carries a dead load of 275 KN and a live load of 400 KN. Interior column is also 400 mm x 400 mm in cross section and carries a dead load of 600 KN and a live load of 500 KN.
Use f'c = 21 MPa, fy = 414 MPa, and q-all net = 255 KPa. Assume weight of footing to be 10% of total load.