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Givena) AASHTO classification system.-. 13 \% passing No. 200 Sieve38 \% passing No. 40 Sieve90 \% passing No 10 sieve.Given L L=23P I=23-19=4P L=19Retering to Table S.1, The soil is A-1-bG I is always zero for suils[A-1-a, A-1-b, A-2-4, A-2-5, A-3]So, the Sant is A-1-b(0)b) Coarse fraction =100-13=87 \%Gravel traction =100-100=0 \%Sand fraction =87-0=87 \%L L=23, P I=4From Table 5.2 and Fignue 5.3 , the Group symbol is SC.Goup Name is clayey sandTable 5.1 Classification of Highway Subgrade MaterialsFigure 5.3 Plasticity chart ...