Question

Into how many groups the gravity weir is sub-divided?

(a) 5

(b) 4

(c) 3

(d) 2

The question was posed to me at a job interview.

This key question is from Diversion Head Works topic in portion Diversion Head Works, Hydraulic Jump Usefulness in Irrigation Structure of Irrigation Engineering

Answer 1

Right choice is (c) 3

For explanation I would say: According to the material used and certain design features, the gravity weir is sub-divided into three groups. They are vertical drop weir, sloping weir, and parabolic weir. Sloping weir is again classified into two groups, namely masonry slop weir and dry stone slope weir.