Problem 1. A rectangular footing supports a square column concentrically. Given: Footing dimensions = 2.5 m. wide x 4 m. long and 0.75 depth Column dimension 0.45 m. x 0.45 m. Concrete fc' 28 MPa Steel fy 415 MPa Concrete cover to the centroid of steel reinforcement = 100 mm Unit weight of concrete = 24 kN/m3 Unit weight of soil = 17 kN/m3 Allowable stresses at ultimate loads are as follows: For beam action, the allowable shear stress = 0.88 MPa For two way section, the allowable shear stress = 1.76 MPa Determine the concentrated load (kN) that the footing can carry based on beam action. Apply effective soil pressure only. a) 4422 kN b) 4122 kN c) 4222 kN d) 4322 KN . Calculate the concentrated load (kN) that the footing can carry based on two-way action. Apply effective soil pressure only. a) 4765 kN c) 4892 KN b) 4868 kN d) 4985 kN If the allowable soil pressure at service loads is 192 kPa, what column axial load (unfactored) in kN, can the footing carry if depth of earth fill is 2 m. above the footing. a) 1300 kN b) 1400 kN c) 1500 kN d) 1600 kN