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Collapsible lands are generally found in arid and sub arid areas. These kinds of soils that are in metastable structure have high void ratio and low weight per unit volume. Loess soil that are wind deposits, residual soils, soils that are formed by volcanic ashes, alluvium soils, fine sand and silts, silt sand and loam are among the soils that have collapsing tendency. Collapsing that happened due to the increase on the water content of the base soil is generally seen in loosen silt layers that have low water cont...