View attached explanation and answer. Let me know if you have any questions.1Soil mechanicsName of studentInstitutional affiliationProfessor’s nameDate24.5) Figure 4.9 shows the grain size distribution of four soils ABCD same as the soilsproblem 2.14. The plastic limit and liquid limit of the fines are as followsTake Soil A.Show the grain-size distribution for soil A as shown in Figure (1).The percent of gravel is the percent finer between grain size 76.2 mm and 4.75 mm.Refer Figure (1).The percent of gravel is 50%.The percent of sand is the percent finer between grain size 4.75 mm and 0.075 mm.Refer Figure (1).The percent of sand is 13%.The percent of fines is the percent finer than grain size 0.075 mm.Refer Figure (1).The percent of fines is 37%.3Obtain the values of grain size for 10% finer d10, grain size for 30% finer d30, and grain size for60% finer d60 from Figure (1).The value of d10 is 0.035 mm.The value of d30 is 0.061 mm.The value of d60 is 9.80 mm.Determine uniformity coefficient using the relation.Substitute 9.80 mm for and 0.035 mm for .Determine the coefficient of curvature using the relation.Substitute 9.80 mm for , 0.035 mm for , and 0.061 mm for d30Refer Table 4.2, “Unified Soil Classification System (Based on Material Passing 75 mm Sieve)”from the textbook and classify the soil.Since, the percent retained on Sieve 200 is more than 50%, the soil is coarse grained in nature.The percent retained Sieve 4 is more than 50%, therefore, the soil is gravel. The value of c ismore than 6. The soil is gravel with fines greater than 12%.Determine the plasticity index (PI) using the relation.4Here, LL is the liquid limit and PL is the plastic limit.Substitute 58 for LL and 34 for PL.Refer Figure 4.2, “Plasticity Chart”, from the textbook and plot the PI and ascertain the location.The PI falls below the A-line.Therefore, the soil gr…
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