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