Two hundred fifty thousand dollars were saved when a computer program was used to compute costs of over 1700 columns in a high-rise building already under construction in Chicago. The 45-story building was designed before the computer program was developed, but construction work had not yet reached the superstructure. A sample study of the column costs indicated that redesign might save a considerable sum. The owner and contractor approved a more complete investigation which resulted in changing the square columns to round, using higher strength concrete and saving $250,000 in the process.