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0 <br />b <br />b <br />ro <br />ti <br />C.) <br />ti <br />w <br />() <br />IA <br />W <br />orc' <br />c� <br />0 <br />x <br />Table 3.1 Average Effective Shear Strength of Compacted Soils. <br />UNIFIED <br />CLASSIFICATION <br />SOIL TYPE <br />PROCTOR <br />MAXIMUM <br />DRY <br />DENSITY <br />pcf <br />COMPACTION <br />OPTIMUM <br />MOISTURE <br />CONTENT <br />% <br />AS COMPACTED <br />COHESION <br />Co <br />tsf <br />SATURATFD <br />COHESION <br />cW <br />tsf <br />FRICTION <br />ANGLE <br />1t <br />deg <br />GW <br />well graded clean gravels, gravel -sand mixture <br />>119 <br /><13.3 <br />>39 <br />GP <br />poorly graded clean gravels, gravel sand mixture <br />>110 <br /><12.4 <br />• <br />• <br />>37 <br />GM <br />silty gravels, poorly graded gravel- sand -silt <br />>114 <br /><14.5 <br />• <br />• <br />>34 <br />GC <br />clayey gravels, poorly graded gravel -sand -clay <br />>115 <br /><14.7 <br />>31 <br />SW <br />well graded clean sands, gravelly sands <br />119 ±5 <br />13- 3'_2.5 <br />0.41±0.04 <br />38 ±I <br />SP <br />poorly graded clean sands, sand - gravel mixture <br />110 ±2 <br />12.4 ±1.0 <br />0.24!0.06 <br />37 ±1 <br />SM <br />silty sands, poorly graded sand -silt mixture <br />114 ±I <br />14.5 ±0.4 <br />0.53 ±0.06 <br />0.21 ±0.07 <br />34 ±I <br />SM -SC <br />sand- silt -clay with slightly plastic fines <br />119 ±1 <br />12.8 ±0.5 <br />0.21=0.07 <br />0.15 ±0.06 <br />33 ±3 <br />SC <br />clayey sands, poorly graded sand -clay mixture <br />115x1 <br />14.7 ±0.4 <br />0.78!0.16 <br />0.12 ±0.06 <br />31 ±3 <br />ML <br />inorganic sibs and clayey silts <br />103±1 <br />19.2 ±0.7 <br />0.70 ±0.10 <br />0.09 *_• <br />32 ±2 <br />ML -CL <br />mixtures of inorganic silts and clays <br />1092 <br />16.8 ±0.7 <br />0.66 ±0.18 <br />0.23 ±• <br />32 ±2 <br />CL <br />inorganic clays of low to medium plasticity <br />108 ±1 <br />17.3 ±3 <br />0.91!0.11 <br />0.14 ±0.02 <br />28 ±2 <br />OL <br />organic silts and silty clays of low plasticity <br />MH <br />inorganic clayey silts, elastic silts <br />82 ±4 <br />36.3 ±3.2 <br />0.7610.31 <br />0.21 ±0.09 <br />250 <br />CH <br />inorganic clays of high plasticity <br />94 ±2 <br />25.5 ±1.2 <br />1.07 ±0.35 <br />0.12 ±0.06 <br />19 ±5 <br />OH <br />organic clays and silty clays <br />•denotes in fficient data. > is greater than. < is less than <br />(After Bw- of Reclsmarbn, 1973, 1 pcf -157.1 N1W, I tsf -95.8 ►Pa) <br />