Question

Bored compaction piles are the modification of __________

(a) Composite piles

(b) End bearing piles

(c) Compaction piles

(d) Under-reamed piles

I had been asked this question in an internship interview.

My question is taken from Cased Cast-in-Situ Concrete Piles in division Pile Foundations of Geotechnical Engineering II

Answer 1

The correct choice is (c) Compaction piles

To explain I would say: Bored compaction piles are the modification of under-reamed piles. These piles are also cast-in-situ piles, same as under-reamed piles.