5. The results of a particle size analysis of a soil are given in the following table. The Atterberg limit tests yielded LL=62, PL = 20. Sieve No. Sieve Opening (mm) Percent Coarser by Weight 4 4.75 0 10 2.00 5.1 20 0.85 10.0 40 0.425 40.7 60 0.25 70.2 100 0.15 84.8 200 0.075 90.5 Pan 100 a) Draw the gradation curve for this soil b) Determine the uniformity coefficient and the coefficient of curvature c) Classify the soil using USCS and ASSHTO d) Rate this soil as a subgrade for highway construction