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• TABU • <br /> AVERAGE EFFECTIVE SHEAR STRENGTH OF COMPACTED SOILS <br /> PITH VALUES FOR NAUL ROAD G <br />PCC No. Unified Llassif ication Soil Type Maximum Dry Optimum Moisture As Compacted Saturated Friction Angle <br /> _____ __DensitY_ecf__ _____C ontent_X___ Cohesion ksf Cohesion ksf <br /> SM-S[ Sand•silt-clay with <br /> slightly plastic fines 119+1 12.8+0.5 0.42*0. 14 0.30+0. 12 33+3 <br /> S[ Clayey sand, poorly <br /> graded sand clay mixture 115+1 14.7+0.4 1.56+0.32 0.24+0. 12 31+3 <br /> ML Inorganic silts and <br /> clayed silts 103+1 19.2+0.7 1.40+0.20 0.18 32+2 <br /> ML-CL Mixtures of inorganic <br /> N silts and clays 109+2 16.8+0.7 1.32+0.36 0.46 32+2 <br /> CL Inorganic clays of <br /> Iow to medium plasticity 82+4 36.3+3.2 1.52+0.62 0.42+0. 18 25+3 <br /> CN Inorganic clays of high <br /> plasticity 94+ 25.5.1.2 2.14+0.70 0.24+0. 12 19+5 <br />8 (pond) Sand and clay N/A N/A N/A 0.150 38 <br />J (pond) Sandy clay 109.0 16.6 N/A 0.340 28 <br />X (road) Sandy clay-clay 111.8 14.8 N/A N/A N/A <br />N (road) Sandy clay N/A N/A N/A 0.72 30 <br />P (road) Slightly sandy clay 112.E 15.4 N/A N/A N/A <br />