Improvement of soft and loose floors with stone columns is a very practical system in recent years abroad.It has been applied in a limited number of projects in our country.Depending on the site and ground conditions, the ground transport capacity is increased with stone columns and superstructure project loads, the settlement period is reduced and the floors are solidified in the event of an earthquake or loss of strength in case of an earthquake.Stone columns are generally preferred on soft and medium solid clay grounds, where the thickness of the problematic ground layer is generally less than 10 m. Stone column applicationcan reduce seating problems usually by 50-60% and the carrying capacity can be increased at much higher levels. Generally, ends of the stone columns advisable to be placed the on a strong ground.
