U.S Sieve No Opening (mm) Mass of soil retained (g) 4 4.75 28 10 2.00 42 20 0.85 48 40 0.425 128 60 0.250 221 100 0.150 86 200 0.075 40 Pan 24 Determine the percent finer than each sieve and plot a grain-size distribution curve. Determine D10, D30, and D60 from the grain-size distribution curve. Calculate the uniformity coefficient, Cu. Calculate the coefficient of gradation, Cc. Classify the soil by AASHTO and USCS system. (LL = 30, PL = 10)

U.S Sieve No Opening (mm) Mass of soil retained (g) 4 4.75 28 10 2.00 42 20 0.85 48 40 0.425 128 60 0.250 221 100 0.150 86 200 0.075 40 Pan 24 Determine the percent finer than each sieve and plot a grain-size distribution curve. Determine D10, D30, and D60 from the grain-size distribution curve. Calculate the uniformity coefficient, Cu. Calculate the coefficient of gradation, Cc. Classify the soil by AASHTO and USCS system. (LL = 30, PL = 10)

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter2: Origin Of Soil And Grain Size

Section: Chapter Questions

Problem 2.6P: Repeat Problem 2.4 with the following data. 2.4 The following are the results of a sieve analysis....

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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.
8. a) According to the results of a sieve analysis in Table 1 below, plot the sieve analysis graph and construct a soil particle-size distribution curve. Table 1 Sieve Size (mm) Mass of retained (g) 4.75 0 2.00 40 0.850 60 0.425 89 0.250 140 0.180 122 0.150 210 0.075 56 Pan 12 b) Determine i)Effective size D10, D30, and D60 ii)Uniformity coefficient, Cu iii)Coefficient of curvature, Cc iv)Classify the soil based on the graph
Calculate the CEC of a 100g soil sample that was found to contain the following cations: Ca2+ = 0.12g Mg2+ = 0.024g K+ = 0.078g Al3+ = 0.027g NH4+ = 0.036g H+ = 0.002g
A fully saturated soil sample has a volume of 28 cc. The sample was dried in oven and the weight of the dry soil pat was found to be 48.76 g. Given G= 2.68. Determine void ratio in percent. a. 18.23 b. 53.6 c. 9.77 d. 20.0
Opening(mm) Mass of soil retained on each sieve (g) 4.75 18.0 2 22.0 0.85 40.0 0.425 22.0 0.25 27.0 0.15 30.0 0.075 12.0 0.02 29.0 0.006 21.0 Pan 30.0 Based on this result, plot the particle-size distribution curve and determine the following:i) The percentage passing for each of the sieve size.ii) D10, D30 and D60 from the particle-size distribution curve.iii) The uniformity of coefficient, Cu and the coefficient of gradation, Cc.iv) Classify the soil using the British Standard Soil Classification System if the liquid limitand plasticity limit of the soil are 63% and 22%. Refer Figure 1
A fully saturated soil sample has a volume of 28 cc. The sample was dried in oven and the weight of the dry soil pat was found to be 48.76 g. Given G= 2.68. Determine volume of solids in cm3. a. 18.23 b. 9.77 c. 20 d. 53.6
You are checking a field-compacted layer of soil. The laboratory control curve has the following values: gd (kN/m3) w (%) 16.34 14 16.57 16 16.65 18 16.50 20 16.26 22 15.87 24 The specification for compaction states that the field-compacted soil must be at least 95% of the maximum control density and within of the optimum moisture for the control curve. You dig a hole 1m3 in the compacted layer and extract a sample that weighs 17.2 kN wet and 14.1 kN dry. (a) What is the compacted gd? The compaction w? The percent compaction? Does the sample meet the specifications? (b) If the specific gravity is 2.68, what is the compacted degree of saturation? If the sample were saturated at constant density, what would be the water content?
QUESTION 2 a. The results given in Table 1 were obtained in a particle size distribution test for soil sample received in the laboratory. Table 1 US Sieve No. Size Opening(mm) Weight Retained(g) 4 4.75 0 10 2.0 18.5 20 0.85 53.2 40 0.425 90.5 60 0.25 81.8 100 0.150 92.2 200 0.075 58.5 Pan - 26.5i. Determine the percentage passing each sieve and plot the particle size distribution curve. ii. How much fine-grained soils are in the sample ? iii. Determine the amount of gravel and sand in the sample ? iv. Determine D10, D30, and D60 from the grain-size distribution curve. v. Calculate the uniformity coefficient, Cu. vi. Calculate the coefficient of gradation, Cc. vii. Describe the gradation curve (eg poorly graded)
A fully saturated soil sample has a volume of 28 cc. The sample was dried in oven and the weight of the dry soil pat was found to be 48.76 g. Given G= 2.68. Determine the porosity in percent. A. 9.77 B. 1.745 C. 2.09 D. 34.90
Let us assume that a soil sample taken in the field is taken and it must be identified by the SUCS Method and AASHTO Method. Moisture content = 5.75% Limit liquid = 53.5 Plastic limit = 31.6 Granulometry Sieve % Pass No. 4 100 # 40 68 # 200 54.3 Do you select the best answer? a) Inorganic silt and sand, with low plasticity b) Inorganic clay with low plasticity c) Clay silt, traces of gravel, dark Brown
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