1. The following results were obtained from particle size distribution analysis of three soils - A, B and C. Sieve # 1/2 in 3/8 in #4 # 10 #40 # 100 #200 Diameter (mm) 12.5 9.5 4.75 2 0.425 0.15 0.075 0.02 0.003 0.001 WL (or LL, liquid limit) Wp (or PL, plastic limit) w (natural water content) Percent passing Soil B Soil A 100 96 89 82 67 57 47 28 8 3 25 16 11 100 98 82 33 12 5 5 Soil C 100 99 97 85 55 43 51 19 26.5 Required: (1) Plot the particle size distribution curves (semi-log). Determine the following quantities of each soil: the effective particle size dio, the mean particle side d50, the coefficients of uniformity and curvature (if possible). (2) According to the particle size distribution, when the engineering properties are concerned, which soil is the most sensitive to water and which soil is mostly affected by density? Give you logic. (3) Classify the soils according to the USCS.

1. The following results were obtained from particle size distribution analysis of three soils - A, B and C. Sieve # 1/2 in 3/8 in #4 # 10 #40 # 100 #200 Diameter (mm) 12.5 9.5 4.75 2 0.425 0.15 0.075 0.02 0.003 0.001 WL (or LL, liquid limit) Wp (or PL, plastic limit) w (natural water content) Percent passing Soil B Soil A 100 96 89 82 67 57 47 28 8 3 25 16 11 100 98 82 33 12 5 5 Soil C 100 99 97 85 55 43 51 19 26.5 Required: (1) Plot the particle size distribution curves (semi-log). Determine the following quantities of each soil: the effective particle size dio, the mean particle side d50, the coefficients of uniformity and curvature (if possible). (2) According to the particle size distribution, when the engineering properties are concerned, which soil is the most sensitive to water and which soil is mostly affected by density? Give you logic. (3) Classify the soils according to the USCS.

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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Concept explainers

Soil engineering for highway design

Soil engineering is a part of geotechnical engineering that deals with the characteristics of soil. It also helps to understand the behavior of the soil in different conditions. The basic concepts of soil are studied to check the strength, compressibility, and porosity of the soil. This makes soil engineering an important topic for civil engineering.

Question

1. The following results were obtained from particle size distribution analysis of three soils
- A, B and C.
Sieve #
1/2 in
3/8 in
#4
# 10
#40
#100
#200
Diameter (mm)
12.5
9.5
4.75
2
0.425
0.15
0.075
0.02
0.003
0.001
WL (or LL, liquid limit)
wp (or PL, plastic limit)
w (natural water content)
Soil A
100
96
89
82
67
57
47
28
8
Percent passing
Soil B
3
25
16
11
100
98
82
33
12
5
5
Soil C
100
99
97
85
55
43
51
19
26.5
Required:
(1) Plot the particle size distribution curves (semi-log). Determine the following
quantities of each soil: the effective particle size dio, the mean particle side d50, the
coefficients of uniformity and curvature (if possible).
(2) According to the particle size distribution, when the engineering properties are
concerned, which soil is the most sensitive to water and which soil is mostly affected
by density? Give you logic.
(3) Classify the soils according to the USCS.

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