Question

An arch dam looks like a single arch in _________________

(a) plan

(b) front elevation

(c) side elevation

(d) both plan and front elevation

I got this question in my homework.

I'm obligated to ask this question of Arch Dams topic in chapter Arch and Buttress Dams of Irrigation Engineering

Answer 1

Right option is (a) plan

For explanation I would say: A solid wall curved in plan standing across the entire width of the river valley in a single span is an arch dam. The dam body is usually made of cement concrete. When multiple or number of arches are used supported between intermediate piers, the dam is known as buttress dam.