No.3 1. From the given soil samples below, (a) compute the effective size, uniformity coefficient, andcoefficient of gradation (b) Determine the percent of gravel, sand, silt and clay of soil A usingAASHTOSievesize.0.4250.0330.0180.010.00620.00350.00180.001Soil APassing Finer (%)Number of Blows, (N)152028100908070605040352. Following are the results from the liquid and plastic limit tests for a soil.LIQUID LIMIT TESTMoisture content (%)4240.839.1PLASTIC LIMIT TEST: PL = 18.7%a. Draw the flow curve and obtain the liquid limit.b. What is the plasticity index of the soil?3. The moist unit weight and degree of saturation of a soil are given in the following table:Moist unit weight (lb/cu. Ft)105.73112.67a. Determine the void ratio and specific gravity of the soil.Degree of saturation (%)5075

To Determine :- Void ratio, e and specific gravity (G) of the soil.

3. The moist unit weight and degree of saturation of a soil are given in the following table: Degree of saturation (%) 50 75 Moist unit weight (lb/cu. Ft) 105.73 112.67 a. Determine the void ratio and specific gravity of the soil.

3. The moist unit weight and degree of saturation of a soil are given in the following table: Degree of saturation (%) 50 75 Moist unit weight (lb/cu. Ft) 105.73 112.67 a. Determine the void ratio and specific gravity of the soil.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.13P

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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

100%

No.3

1. From the given soil samples below, (a) compute the effective size, uniformity coefficient, and
coefficient of gradation (b) Determine the percent of gravel, sand, silt and clay of soil A using
AASHTO
Sieve
size.
0.425
0.033
0.018
0.01
0.0062
0.0035
0.0018
0.001
Soil A
Passing Finer (%)
Number of Blows, (N)
15
20
28
100
90
80
70
60
50
40
35
2. Following are the results from the liquid and plastic limit tests for a soil.
LIQUID LIMIT TEST
Moisture content (%)
42
40.8
39.1
PLASTIC LIMIT TEST: PL = 18.7%
a. Draw the flow curve and obtain the liquid limit.
b. What is the plasticity index of the soil?
3. The moist unit weight and degree of saturation of a soil are given in the following table:
Moist unit weight (lb/cu. Ft)
105.73
112.67
a. Determine the void ratio and specific gravity of the soil.
Degree of saturation (%)
50
75

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