Following are the results of a sieve analysis U.S. Sieve No. Mass of soil retained on each sieve (g) 4 10 0 41.2 20 55.1 40 80.0 60 91.6 100 60.5 200 35.6 Pan 21.5 a. Determine the percent finer than each sieve size and plot the grain-size distribution curve. b. Determine the percentages of gravel, sand, and fines (silt and clay) using the Unified Soil Classification System. c. Determine D10, D30, and D60 from the grain-size distribution curve. d. Calculate the uniformity coefficient, Cu. e. Calculate the gradation coefficient, Ce.