The results of a particle size analysis of a soil are given in the following table. No atterberg limit test were conducted.
Sieve # - 9.53 mm (3/8"), 4, 10, 20, 40, 100, 200
% finer - 100, 90.8, 84.4, 77.5, 71.8, 65.6, 62.8
a) Would you have conducted Atterberg limit tests on this soil? Justify you answer.
b) Classify the soil according to USCS, ASTM-CS, and AASHTO.
c) Is this soil a food foundation material? Justify your answer.