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<br /> Average Effective Shear Strength of Compacted Soils. <br /> PROCTOR ODMPACTION <br /> MA%IMUM OPTIMUM AS COMPACTED SATURATED FRICTION <br /> DRY MOISTURE COHESION COHESION ANGLE <br />UNIFIED DENSITY CONTENT C• cy, <br />ClA55I FICATION SOIL TYPE pef 9a LSf ISf deg <br />GW well graded clean gravels, gravel-send mi%ture >119 <13.3 • >38 <br />GP poorly graded Clean gavels, gravel sand mi%turc >110 <12.4 • • >37 <br />GM silty gravels, poorly gaded gavel-sand-silt >114 <14.5 • • >34 <br />GC clayey gavels, poorly graded gravel-sand-clay >115 <14.7 • >31 <br />SW well graded clean sands, gavelly sands 1195 l3.3~2.5 0.410.04 • 3811 <br />SP poorly grtded clean sands, sand-gavel tni%turc 1102 12.4~f.0 0.240.06 3711 <br />SM silty sands, poorly graded sand-silt mi%turc 1141 14.510.4 0.3310.06 0.210.07 3411 <br />SM•SC sand-silt-clay with slightly plastic fines 1191-1 12.810.5 0.2110.07 0.1510.06 3313 <br />SC clayey sands, poorly graded sand-clay mi%turc 11511 14.710.4 0.780.16 0.12=0.06 3113 <br />ML inorganic silts and clsyed silts 1031 19.210.7 0.7010.10 0.09x• 32'_2 <br />ML•CL rni%tura of inorganic silts and clays 10912 16.8±0.7 0.6610.18 0.23±• 3212 <br />CL inorganic clays of low to medium plasticity 10811 17.33 0.91~O.1i 0.14=0.02 2812 <br />OL organic silts snd silty clays of low plasticity • <br />MH inta-ganic clayey silts, elastic silts 824 36.313.2 0.7610.31 0.2110.09 2513 <br />CH inorganic clays of high plasticity 94+2 25.511.2 1.0710.35 0.1210.06 1915 <br />OH organic clays and silty clays ~ • • • <br />•tknrxes insutficienl dau, ~ is grater than, a is less than <br />(After Bureau of Reclamation, 1973; 1 pcf=137.1 Nlyd, 1 Lsfa95.8 kPa) <br /> FROM HupNG) <br />