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2.1 For a gravel with D = 0.48 mm, D30 = 0.25 mm, and D10 = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil?

2.1 For a gravel with D = 0.48 mm, D30 = 0.25 mm, and D10 = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil?

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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2.4 The following are the results of a sieve analysis. 2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil? 2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm, and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or a poorly-graded soil. U.S. sieve no. Mass of soil retained (g) 4. 10 18.5 20 532 40 90.5 60 818 100 92.2 200 585 Pan 26.5 a. Determine the percent finer than cach sieve and plot a grain-size distri- bution curve. b. Determine Dg. Dy. and D, for each soil. . Calculate the uniformity coefficient C d. Calculate the coefficient of gradation C,.
Transcribed Image Text:2.4 The following are the results of a sieve analysis. 2.1 For a gravel with Dg = 0.48 mm, D = 0.25 mm, and Dn = 0.11 mm, calculate the uniformity coefficient and the coefficient of gradation. Is it a well-graded or a poorly graded soil? 2.2 The following values for a sand are given: Dn = 0.3 mm, D = 0.41 mm, and D = 0.77 mm. Determine C, and C, and state if it is a well-graded or a poorly-graded soil. U.S. sieve no. Mass of soil retained (g) 4. 10 18.5 20 532 40 90.5 60 818 100 92.2 200 585 Pan 26.5 a. Determine the percent finer than cach sieve and plot a grain-size distri- bution curve. b. Determine Dg. Dy. and D, for each soil. . Calculate the uniformity coefficient C d. Calculate the coefficient of gradation C,.
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