A sieve analysis is performed for a soil sample. The data are tabulated as shown. Solve Cu

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)

EXERCICE 4 Sieve analysis was performed from which the results were summarized in the following table. 1 a) Plot the grain size curve b) Calculate the coefficient of uniformity and the coefficient of gradation. c) Give a first idea about the classification of such soil. U.S. Sieve Opening (mm) Mass retained in each sieve (gr) 1 20 4 4.750 10 2.000 40 20 0.850 60 40 0.425 89 60 0.250 140 80 0.180 122 100 0.150 210 200 0.075 56 Pan 12

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From the results of a sieve analysis, shown below, determine: (a) the percent finer than each sieve (prepare table) and plot a grain-size distribution curve (use the gradation curve, template   (b) D10, D30, D60 from the grain-size distribution curve, (c) the uniformity coefficient, Cu, and (d) the coefficient of gradation, Cc.

In a sieve analysis test, 95.5% of the sample is passing the 5mm sieve and 5.13% is passing sieve #200, which of the following is correct about this sample: There is no clay in the sample   the percent of silt and clay is: 5.13%    There is 4.5% Sand and Gravel in the sample   95.5% of the sample is Sand and Silt

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Consider that a 58.7 gram sample of dry soil is used in making a mechanical analysis by using the hydrometer method. The laboratory was held at a constant temperature of 20 C (68 F). The 40 s hydrometer reading was found to be 32.5 and the 8 hr hydrometer reading was 15.5. The percentage of sand in this soil sample is (note, a 58.7 gram sample is used here): Your Answer: Answer units

Problem 4 The result of the sieve analysis is shown below: Plot a grain size distribution curve and compute the following: (a) uniformity coefficient (b) coefficient of curvature. Comment on the type of soil. Sample 1 200 grams 10 mins Sample 1 (200 grams) 10 mins Diameter Mass Retained Sieve No. Mass Retained |(grams)-10 mins. Diameter (mm) (grams)-10 mins. Sieve No. _(mm) 4 4.76 21 4 4.76 20 10 2 38 10 2 31 60 0.25 108 60 0.25 139 100 0.149 25 100 0.149 200 0.074 6 200 0.074 pan 2 pan 200 200

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