Answer / g.n.gobi

Friction piles are used for sandy soil.

Answer / sivalingam

1.under reamed pile
2.bored cast in situ
3.driven cast in situ
4.driven precast pile
5.steel pile
6.wooden pile
7.Anchor pile etc.

Driven precast pile preferred for sandy soil

Answer / karthik

there is two types deep foundation:
* pile foundation
1.bearing piles
2.friction piles
* under reamed piles
For using materials:
* concrete piles
* wood piles
* steel piles

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