The analyzed concrete parts can be rectangular, round, irregular and with any reinforcement design or pattern. SpColumn is software for designing and analyzing concrete parts of civil structures. Using spColumn, it is possible to examine irregularly and reinforce concrete columns in. Only Investigation option is provided for irregular sections because unlike regular sections, due to the lack of predefined reinforcement pattern that can be programmed for irregular sections. SpColumn can investigate any irregular sections (solid or hollow) with reinforcement size and locations specified by user.