Question

A narrow gradation is also called:

(a) Gap gradation

(b) Uniform gradation

(c) Rich gradation

(d) Open gradation

The question was posed to me in unit test.

My doubt stems from Sieve Analysis topic in section Materials for Construction of Basic Civil Engineering

Answer 1

Correct choice is (b) Uniform gradation

The explanation is: A graph is plotted after performing sieve analysis.  It shows different curves.  A narrow gradation is also called uniform gradation. It shows that the aggregate is of approximately the same size.