Many building structures use square columns to withstand the strength of the beams above them, but there are also those that use circular columns as their main structure to withstand the strength
of the beams above them. This research was conducted to determine the comparison between the column in the form of a square with a circle at the Telecommunication Telkomsel Center (TTC) Makassar 2 South Sulawesi. The load calculation and building planning are carried out using the ETABS and PCACOL programs for column interaction diagrams.

kata kunci :
Building stability, amount of reinforcement, internal forces, capacity of square and circle columns