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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 <br /> 30.47 <br /> Very Dense More than 50 More than 120 More than 47 <br /> CONSISTENCY-FINE-GRAINED SOIL <br /> Standard Dames&Samplerre Dames&Moore Sampler Unconfined Compressive <br /> Consistency Penetration <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 <br /> 4.0 <br /> Hard More than 30 More than 65 2 0- <br /> More than 31 More than 4.0 <br /> PRIMARY SOIL DIVISIONS GROUP SYMBOL GROUP NAME <br /> CLEAN GRAVEL GW or GP <br /> GRAVEL (<5%fines) . . GRAVEL <br /> (more than 50%of GRAVEL WITH FINES GW GM or GP-GM GRAVEL with silt <br /> coarse fraction (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) <br /> (> 12%fines) GC clayey GRAVEL <br /> GC-GM silty, clayey GRAVEL <br /> (more than 50% CLEAN SAND <br /> retained on SAND (<5%.fines) 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 512%fines) SW SC or SP SC SAND with clay <br /> passing SAND WITH f FINES SM -silty SAND <br /> No.4 sieve) SC clayey SAND <br /> (>.12%fines) <br /> SC-SM silty,clayey SAND <br /> ML SILT <br /> FINE-GRAINED • •.CL CLAY SOIL Liquid limit less than 50 • <br /> CL-ML silty CLAY <br /> SILT AND CLAY <br /> (50%or more 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 Inc Sand and Gravel In: <br /> �y very low moisture, Percent Fine-Grained Coarse- Percent Fine-Grained Coarse- <br /> Percent dry to touch <br /> Soil Grained Soil Soil Grained Soil <br /> moist damp,without <5 trace trace <5 trace trace <br /> visible moisture 5-12 minor with 5- 1 5 minor <br /> minor <br /> wet visible free water, > 12 some silty/clayey 15-.30 with with <br /> usually saturated _ >30 sandy/gravelly Indicate% <br /> G Eo DESIGN_V <br /> 10700M.AaraeAvenue North-Suite 402 SOIL CLASSIFICATION SYSTEM TABLE A-2 <br /> Seattle WA98133 - <br /> 206.838.9900 mxv.geodeslgnlnc.om <br />