![Combined Footing Design Based on ACI 318-05 1 Combined Footing Design Based on ACI 318 05](https://excel.civilmdc.com/wp-content/uploads/2021/12/Combined-Footing-Design-Based-on-ACI-318-05.png)
When individual footing has to accommodate two or in exceptional case more than Two columns is known as the combined footing. or. When two or three columns are located very near to each other, we provide a single substructure for them and the footing is known as a combined footing.