Are the columns separately analyzed for gravity and lateral loads ? How does RAM design the columns which participate in both gravity and lateral systems ? Are they designed separately and we have to combine their utilization ?
Or does RAM design the column first against gravity loads and then it checks the same column for increased compressive forces due to lateral loads ?
Yes, there are 2 (or more) different analysis types performed. See: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/6513/ram-ss---analysis-types-tn
Lateral columns also take gravity loads. I say, "When in doubt, make it lateral".
Thank You