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Sand piling is a soil improvement technique that uses sand piles to increase the bearing capacity of low-strength soils. The process involves placing sand piles in the soil and then compacting them using vibration or dynamic force. 

 

Sand piling is used to improve the stability of structures built on reclaimed land, and to reduce the risk of liquefaction and settlement. It's also a popular method for improving the seismic resistance of sandy deposits. 

 





The sand compaction pile (SCP) method is a ground improvement technique that was developed in Japan. It uses a casing pipe to install sand into soft ground using vibration. The SCP method is often used as a liquefaction countermeasure in Japan. 

 



The Compozer method is another sand compaction pile technique that involves driving down and extracting a vibrating steel pipe to install large diameter sand piles.