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RELATIVE DENSITY-COARSE-GRAINED SOIL <br /> Relative Density Standard Penetration Dames&Moore Sampler Dames& Moore Sampler <br /> Resistance (140-pound hammer) (300-pound hammer) <br /> Very Loose 0-4 0 1 1 <br /> 0-4 <br /> Loose 4- 10 11 -26 4- 10 <br /> Medium Dense 10 -30 26- 74 10- 30 <br /> Dense 30- 50 74- 120 <br /> 30 -47 <br /> Very Dense More than 50 More than 120 More than 47 <br /> CONSISTENCY- FINE-GRAINED SOIL <br /> Standard Dames&Moore <br /> Consistency Penetration Sampler Dames & Moore Sampler Unconfined Compressive <br /> Resistance (140-pound hammer) (300-pound hammer) Strength (tsf) <br /> Very Soft Less than 2 Less than 3 Less than 2 Less than 0.25 <br /> Soft _ 2 -4 3 -6 2 - 5 <br /> Medium Stiff 4- 8 0. 5 0.50 <br /> 6 - 12 5 -9 0.50- 1.0 <br /> Stiff 8 - 15 12 -25 9 - 19 <br /> Very Stiff 15 - 30 1.02.0 <br /> 25 -65 19 -31 2.0-•4.0 <br /> Hard More than 30 More than 65 More than 31 <br /> More than 4.0 <br /> PRIMARY SOIL DIVISIONS GROUP SYMBOL GROUP NAME <br /> CLEAN GRAVEL <br /> GRAVEL (< 5%fines) GW or GP GRAVEL <br /> (more than 50%of GRAVEL WITH FINES GW-GM or GP-GM GRAVEL with silt <br /> coarse fraction (z 5%ands 12%-fines) GW-GC or GP-GC GRAVEL with clay <br /> COARSE- retained on GM silty GRAVEL <br /> GRAINED SOIL No. 4 sieve) <br /> GRAVEL WITH FINES <br /> (> 12%fines) GC clayey GRAVEL <br /> (more than 50% GC-GM silty, clayey GRAVEL <br /> retained on CLEAN SAND <br /> No. 200 sieve) <br /> SAND (<5%fines) SW or SP SAND <br /> (50%or more of SAND WITH FINES SW-SM or SP-SM SAND with silt <br /> coarse fraction (z 5%ands 12%fines) SW-SC or SP-SC SAND with clay <br /> passing SAND WITH FINES SM silty SAND <br /> No, 4 sieve) <br /> (> 12%fines) SC clayey SAND <br /> SC-SM silty, clayey SAND <br /> FINE-GRAINED ML SILT <br /> SOIL Liquid limit less than 50 CL CLAY <br /> CL-ML silty CLAY <br /> (50%or more SILT AND CLAY OL ORGANIC SILT or ORGANIC CLAY <br /> passing MH SILT <br /> No. 200 sieve) Liquid limit 50 or greater CH CLAY <br /> OH ORGANIC SILT or ORGANIC CLAY <br /> • HIGHLY ORGANIC SOIL PT PEAT <br /> MOISTURE <br /> CLASSIFICATION ADDITIONAL CONSTITUENTS <br /> Secondary granular components or other materials <br /> Term Field Test such as organics, man-made debris, etc. <br /> Silt and Clay In: Sand and Gravel In: <br /> d very low moisture, Percent Percent Fine-Grained Coarse- <br /> ry dry to touch Soil Grained Soil Soil Grained Soil <br /> moist damp,without <5 trace < 5 trace trace <br /> visible moisture 5 - 12 . 5 - 15 minor <br /> minor <br /> wet visible free water, > 12 some 15 -30 with with <br /> usually saturated ' 4 ,.�.V.s k :~- <br /> , f*.id > 30 sandy/gravelly Indicate% <br /> GEODESIGN= <br /> 10700 Merldn tAVtle WA9 North• <br /> 8133 Suite 402 SOIL CLASSIFICATION SYSTEM TABLE A-2 <br /> 206,838.9900 wuw.geodesignlnc.com <br />