Deep compaction of in-situ foundation soil by compaction piles:
In this method for the compaction of the sandy soils volume displaced piles are used. The steel casing is driven into the ground to the required depth. After reaching that depth the hole formed is compacted with the sand, while at the same time the steel casing is gradually withdrawn. This process causes a two fold effect. The compaction of the surrounding soil is caused due to vibration and displacement caused by driving the casing. The compaction piles, themselves consists of a column of densely packed material.