Note: This information is for designing RCC columns and footings. It applies to rectangular columns subjected to axial load only, and the footing size and design should be as per the soil bearing capacity. The design limits for the structure are for G+3 buildings. The concrete strength (fck) is 20 MPa, the steel strength (fy) is 415 MPa, and the concrete cover is 40 mm for column and 50 mm for footing. Do not use this for construction without consulting an architect and structural engineer.