2.4 The following are the results of a sieve analysis.2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculatethe uniformity coefficient and the coefficient of gradation. Is it a well-gradedor a poorly graded soil?2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm,and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or apoorly-graded soil.U.S.sieve no.Mass of soilretained (g)4.1018.5205324090.56081810092.2200585Pan26.5a. Determine the percent finer than cach sieve and plot a grain-size distri-bution curve.b. Determine Dg. Dy. and D, for each soil.. Calculate the uniformity coefficient Cd. Calculate the coefficient of gradation C,.

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Answered: 2.1 For a gravel with D = 0.48 mm, D30…

2.1 For a gravel with D = 0.48 mm, D30 = 0.25 mm, and D10 = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

2.4 The following are the results of a sieve analysis.
2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculate
the uniformity coefficient and the coefficient of gradation. Is it a well-graded
or a poorly graded soil?
2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm,
and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or a
poorly-graded soil.
U.S.
sieve no.
Mass of soil
retained (g)
4.
10
18.5
20
532
40
90.5
60
818
100
92.2
200
585
Pan
26.5
a. Determine the percent finer than cach sieve and plot a grain-size distri-
bution curve.
b. Determine Dg. Dy. and D, for each soil.
. Calculate the uniformity coefficient C
d. Calculate the coefficient of gradation C,.

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