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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 0-11 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 30-47 <br /> Very Dense More than 50 More than 120 More than 47 <br /> CONSISTENCY- FINE-GRAINED SOIL <br /> Standard Dames&Moore Dames&Moore Sampler Unconfined Compressive <br /> Consistency Penetration Sampler <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 0.25 -0.50 <br /> Medium Stiff 4-•8 6-12 5 -9 0.50- 1.0 <br /> Stiff 8-15 12 -25 9- 19 1.0-2.0 <br /> Very Stiff 15-30 25 -65 19-31 2.0-4.0 <br /> Hard More than 30 More than 65 More than 31 More than 4.0 <br /> PRIMARY SOIL DIVISIONS GROUP SYMBOL GROUP NAME <br /> CLEAN GRAVEL GW or GP GRAVEL <br /> GRAVEL (<5%fines) <br /> (more than 50%of GRAVEL WITH FINES GW GM or GP-GM GRAVEL with silt <br /> •coarse raction (Z 5%and s 12%-fines) •GW-GC or•GP-GC GRAVEL with clay <br /> COARSE- retained on GRAVEL WITH FINES GM silty GRAVEL <br /> GRAINED SOIL No.4 sieve) (> 12%fines) GC clayey GRAVEL <br /> GC-GM silty, clayey GRAVEL <br /> (more than 50% CLEAN SAND <br /> • retained on SAND (<5%fines) SW or SP SAND <br /> No. 200 sieve) <br /> (50%or more of SAND WITH FINES SW-SM or SP-SM SAND with silt <br /> coarse fraction (Z 5%and s 12%fines) SW-SC or SP-SC SAND with clay <br /> passing SM silty SAND <br /> SAND WITH FINES <br /> No. 4 sieve) (> 12%fines) SC clayey SAND <br /> SC-SM silty, clayey SAND <br /> ML SILT <br /> • <br /> FINE-GRAINED Liquid limit less than 50 • <br /> •CL CLAY <br /> SOIL 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 ADDITIONAL CONSTITUENTS <br /> CLASSIFICATION <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 /> _ <br /> very low moisture, Percent Fine-Grained Coarse- Percent Fine-Grained Coarse- <br /> dry dry to touch Soil Grained Soil Soil Grained Soil <br /> moist damp,without <5 trace trace <5 trace trace <br /> visible moisture 5- 12 minor with 5- 15 minor minor <br /> visible free water, > 12 some silty/clayey 15-30 with with <br /> wet usually saturated ::•� >30 sandy/gravelly Indicate% <br /> GEODES1G.N <br /> Y <br /> 10700 Meridian Avenue North•Suite 402 SOIL CLASSIFICATION SYSTEM TABLE A-2 <br /> Seattle WA 98133 <br /> 206.838.9900 www.geodeslgnlnc.com <br />