This is a useful video to the Civil Engineers. The method of designing the column is explained step by step in Excel page.
Engineer who design through STAAD Pro may design in this calculation method and may check additionally.
Please do not depend on software only. Even a small mistake made in modelling, assigning an uneconomical size, application of loads, selection of code etc. may give a huge level difference in design results.
If any Engineer likes to very the results, please send message to the mail I have added in video. I can do a structural design in Excel.