The plan of a mat foundation is shown in the figure. Calculate the soil pressure at points A, B, C, D, E, and F using the Conventional Rigid method. (Note: All column sections are planned to be 0.5 m x 0.5 m. All loads shown are factored loads. Determine the reinforcement requirements and the thickness of the mat. fc’=20.7 MPa, fy=413.7 MPa, (normal weight concrete).