Which of the following type of dam requires very strong and stable foundations and is not in use as much as the other types?
(a) Multiple dome-type dams
(b) Massive head type dam
(c) Columnar buttress type dam
(d) Deck slab type dam
The question was asked during an internship interview.
Origin of the question is Buttress Dam in portion Arch and Buttress Dams of Irrigation Engineering