__________ are the cofferdams which can be lifted, floated and placed in another position as soon as its purpose is served.
(a) Dike cofferdam
(b) Double wall cofferdam
(c) Suspended cofferdam
(d) Single wall cofferdam
I had been asked this question in class test.
Question is from Cofferdam and Caisson topic in chapter Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials