A _____________ is defined as a structure which is sunk through ground or water to exclude water and semi fluid material during the process of excavation of foundations.
A. Cofferdam
B. Caisson
C. Well
D. Pit
I got this question by my college director while I was bunking the class.
My doubt stems from Classification of Caissons in division Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials
Correct option is B. Caisson
Explanation: A Caisson is a relatively large deep foundation and resembles is pile foundation in transferring the superstructure load to some desired depth. However, Caisson differs from a pile in size and in the method of construction.