4a. What is the uniformity coefficient for this coarse- grained soil? Plot your curve using the empty gradation curve on included empty gradation curve. 4b. What is the coefficient of curvature? 4c. What is the sorting coefficient?

4a. What is the uniformity coefficient for this coarse- grained soil? Plot your curve using the empty gradation curve on included empty gradation curve. 4b. What is the coefficient of curvature? 4c. What is the sorting coefficient?

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.6P: Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the...

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Concept explainers

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.

Question

Situation 4: Consider the following information obtained from a sieve
analysis.
Sieve Number Sieve Opening (mm)
4.75
2.00
4
289988
10
20
40
60
100
200
Percent Finer (9)
75
51
38
25
19
10
4a. What is the uniformity coefficient for this coarse-
grained soil? Plot your curve using the empty gradation
curve on included empty gradation curve.
4b. What is the coefficient of curvature?
4c. What is the sorting coefficient?
0.84
0.42
0.25
0.149
0.075

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5. The following information is obtained from a sieve analysis to determine the range of particle sizes in a granular soil sample. Sieve Size Sieve Opening (4.76) Percent Finer#4 4.76 96#10 2.00 80#20 0.84 51#40 0.42 38#60 0.25 25#100 0.149 12#200 0.074 5 Present the information as grain-size curve on semi-logarithmic coordinates of percent finer against particle size diameter. From the plot, determine the uniformity coefficient Cu.
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