I assume we are talking about ACI 318-08 (or 11) here. The governing section of the code is 21.13, 'Members not designed as part of the seismic-force resisting system'. This section is applied to gravity columns when the SDC is D, E or F (note this is…

Please take a look at the program manual, RamConcreteShearWall.pdf, Section 7.4 Reinforcement Ratio Limits for some details on how we check ACI 318-11 Section 21.9.2.1. If that does not answer your question, let me know. I've copied a part of that below…

See Section 4.8.4 in the RAM Concrete Column Manual for the sections of 21.13 that are implemented in the program. Induced moments and shears are not calculated by the program, so the program follows ACI 318-11 21.13.4 and not 21.13.2 or 21.13.3 when…