Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 2, Problem 2.7P
To determine
Classify the given soil using the Unified soil classification system give their symbols.
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find the following:
a. What is the value of the percent passing for sieve with 2 mm. opening in percentage?
b. What is the value of the percent passing for sieve with 150 μm. opening in percentage?
c. What is the value of the Effective Size of soil in mm.?
d. What is the value of the coefficient of gradation?e.What is the value of the coefficient of uniformity?
f. What are the percentages of gravel, sand, and Fines using the limits indicated by USCS?
g. What are the percentages of gravel, sand, silt and clay using the limits indicated by MIT?
h. What are the percentages of gravel, sand, silt and clay using the limits indicated by AASHTO?
i. What are the percentages of gravel, sand, silt and clay using the limits indicated by USDA?
A soil sample has the following size distribution;
4 to 2mm = 17%,
2 to 0.05 mm = 12%,
0.5 to 0.005 mm = 22%
0.005 to 0.002 mm = 10%
<0.002 mm = 39%
what are the percentages of clay, silt, and sand? Using USDA calssification what is the modifier and tetural classification
The following are the results from the liquid limit tests for a soil:
Number of Blows, N
Moisture Content, %
16
38.3
21
33.4
34
29.1
a) Draw the flow curve and obtain the liquid limit.
b) If the Plastic Limit is determined to be 8%, what is the Plasticity Index of the soil?
c) What is the Liquidity Index of the soil if the in situ w = 35%? What does this specific result tell us about this soil?
Chapter 2 Solutions
Principles of Foundation Engineering (MindTap Course List)
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- Redo Problem 2.7 according to the AASHTO system (Table 2.3). 2.7 The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay according to the MIT system (Table 2.3).arrow_forwardRepeat Problem 2.11 with the following data. 2.11 The grain-size characteristics of a soil are given in the following table. a. Draw the grain-size distribution curve. b. Determine the percentages of gravel, sand, silt, and clay according to the MIT system. c. Repeat Part b using the USDA system. d. Repeat Part b using the AASHTO system.arrow_forwardHow is the plasticity index of a soil determined?arrow_forward
- Repeat Problem 2.4 with the following data. 2.4 The following are the results of a sieve analysis. a. Determine the percent finer than each sieve and plot a grain-size distribution curve. b. Determine D10, D30, and D60 for each soil. c. Calculate the uniformity coefficient Cu. d. Calculate the coefficient of gradation Cc.arrow_forwardRepeat Problem 2.8 using the following data. 2.8 The following are the results of a sieve and hydrometer analysis. a. Draw the grain-size distribution curve. b. Determine the percentages of gravel, sand, silt and clay according to the MIT system. c. Repeat Part b according to the USDA system. d. Repeat Part b according to the AASHTO system.arrow_forwardRedo Problem 2.7 according to the USDA system (Table 2.3). 2.7 The particle characteristics of a soil are given below. Draw the particle-size distribution curve and find the percentages of gravel, sand, silt, and clay according to the MIT system (Table 2.3).arrow_forward
- Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.arrow_forwardFor soils that are classified by the following USCS symbols, what would be the most likely AASHTO symbols? (Reference: Liu, 1970) Gravels: GW, GP, GM, GC Sands: SW, SP, SM, SC Fines: ML, CL, MH, CHarrow_forwardThe following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.arrow_forward
- determine the group symbol and index for soil a, b and c.arrow_forwardFrom a particle size distribution curve of a sandy soil the following were obtain: Size of particle 0.48 mm percentage finer 60;Size of particle 0.33 mm percentage finer 30;Size of particle 0.21 mm percentage finer 10;Size of particle 0.11 mm percentage finer 5;Determine Cc.arrow_forward
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