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Question: soils and earthworks cet 341 dr david washington associate professor...

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SOILS AND EARTHWORKS CET 341 Dr. David Washington Associate Professor Homework Unit 1.2a-Soil Gradation and Classification Using the following data, determine the percent retained, cumulative percent retained, and percent passing for each sieve. Plot the gradation curve. Determine the effective size, unformity coefficient, and coefficient of curvature. Determine the unfied soill classification of this gradation curve. SIEVE SIZE WEIGHT RETATINED RETATINED PERCENT PERCENT CUMULATIVE PERCENT PASSING RETATNED 3 217 362 227 138 1.5* 3/4 3/8 PAN TOTAL 1127 PAGE 2 OF 5
U.S. STANDARD SIEVE SIZES 4 3 2 1 34 12383 46 810 1416 20 30 40 50 70 100 140 200 100 90 70 30 m 60 40 0 60 Q 40 ш30 a 20 10 90 70 100 2 500 100 50 10 5 05 0.1 Grain Size Millimeters effective size do Uniformity Coefficient C. Coefficient of Curvature C, Is this soil poorly graded or well graded? Die SW:C, 26 & 1sCe S3 PAGE 2 OF 2
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