Question

One of the main advantages of using cased piles are _________

(a) On-the-job-length flexibility and Internal inspection after being driven

(b) Protect concrete fillings

(c) None of the mentioned

(d) All of the mentioned

I have been asked this question during an interview for a job.

Question is from Cased Cast-in-Situ Concrete Piles topic in chapter Pile Foundations of Geotechnical Engineering II

Answer 1

Right answer is (a) On-the-job-length flexibility and Internal inspection after being driven

The best explanation: The advantages of using cased piles are the on-the-job length flexibility, internal inspection after it is driven.