6.2 Rectangular combined footings With these dimensions the footing is treated as a beam supported by the two or more columns,and the shear and moment diagrams are drawn. The depth,based on the more critical of the two-way action or wide-beam shear,is computed. Critical sections for two-way action and wide-beam shear are the same as for spread footings,i.e.,at d/2 and d,respectively,from the column face. With the depth selected,the flexural steel can be designed using the critical moments from the moment diagram. 喝6.2 Rectangular combined footings ▪ With these dimensions the footing is treated as a beam supported by the two or more columns, and the shear and moment diagrams are drawn. ▪ The depth, based on the more critical of the two-way action or wide-beam shear, is computed. ▪ Critical sections for two-way action and wide-beam shear are the same as for spread footings, i.e.,at d/2 and d, respectively, from the column face. ▪ With the depth selected, the flexural steel can be designed using the critical moments from the moment diagram