Question

A constant angle arch dam when compared to constant radius arch dam utilizes concrete quality of about ______________

(a) 43%

(b) 130%

(c) 230%

(d) 113%

This question was posed to me by my school teacher while I was bunking the class.

This question is from Arch Dams topic in portion Arch and Buttress Dams of Irrigation Engineering

Answer 1

Right answer is (a) 43%

To explain: The simplest in design as well as construction is a constant radius arch dam but uses the maximum concrete. An intermediate choice is a variable radius arch dam using around 58% of the concrete used by constant radius arch dam. A constant angle arch dam uses about 43% of the concrete used by a constant radius arch dam.