When the design choice is to redirect the collision load, follow the requirements given in Chapter 2 - Limit States and Loads. When the design choice is to provide structural resistance, follow the requirements in Chapter 4 - Substructure Design, Sections 7 - Columns for Multi-Column Bents.

No further analysis is required for columns with a gross cross-sectional area no less than 40 sq. ft., a minimum thickness of 5 ft. and column transverse reinforcement is composed of at least No. 4 ties at 12 in. maximum spacing or a No. 4 spiral at 9 in. maximum pitch.