For a steel grillage footing to support two unequal column loads

• A. line of action of the resultant of two column loads, is made to coincide with the centre of gravity of the base of the footing
• B. trapezoidal shape is used for the base footing
• C. projections of beams on either side in lower tier are such that bending moments under columns are equal
• D. bending moment under the columns are kept equal to the bending moment between to two columns
• E. all the above.