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i.. . �. <br /> � <br /> ���' <br /> ` SOIL CLASSIFIGATION SYSTEM <br /> MAJOR DIVISIONS GROUP GROUP NAME <br /> i <br /> SYMBOL <br /> � COARSE GRAVEL CLEAN (jW WELL GRADED GRAVEL, FINE TO <br /> GRAINED COARSE GRAVEL <br /> GRAVEL <br /> SOILS MORE THAN 50°h OF GP POORLY-GRADED GRAVEL <br /> I COARSE rRACTION VRAVEL WITH <br /> t��. RETAINED ON NO.4 GM SILTY GRAVEI <br /> SIEVE FINES <br /> MOflE THAN 50°h ('j(�` CLAYEY GRAVEL <br /> RETAINED ON THE <br /> NO. 200 SEIV[ gqNp SW WELL�GRADED SAND, FINE TO <br /> CL[AN SAND COARSE SAND <br /> i . SP POORLY-GRADED SAND <br /> MORE THAN 50 °,6 OF SAND WITH SM SILTY SAND <br /> COARSE FRACTION FINES <br /> PHSSES NO.4 SIEVE SC CLAYEY SAND <br /> � FW6 SILTANDCLAY M� SILT <br /> GSOILSD INORGANIC CL <br /> CLAY <br /> � � LIQUID LIMIT <br /> I LESS THAN 50 ORGANIC OL ORGANIC SILT, ORGANIC CLAY <br /> MORE THAN SO°6 SILT AND CLAY MH SILT OF HIGH PLASTICITY, ELASTIC <br /> � PASSES ON THE SILT <br /> No. 20o sEIVE INORGANIC <br /> CH CLAY OF HIGH PLASTICITY, FAT CLAY <br /> LIQUID LIMIT <br /> 50 OR MORE �RGANIC QH ORGANIC CLAY, ORGANIC SILT <br /> ' HIGHLY ORGANIC SOILS pT PEAT <br /> NOTES: SOIL MOISTURE MODIFIERS: <br /> ' 7. FIELD CLASSIFICATION IS BASED ON VISUAL <br /> � EXAMINATION OF SOIL IN GENERAL ACCORDANCE DRY-ABSENCE OF MOISTURE, DUSTY, DRY <br /> WITH ASTM D2488-83. TO THE TOUCH <br /> 2. SOIL CLASSIFICATION USING LABORATORY TESTS MOIST-DAMP, BUT NO VISIBLE WATER <br /> I �� IS BASED ON ASTM D2487•83. <br /> 3. DESCRIPTIONS OF SOIL DENSITY OR CONSISTENCY WET'VISIBLE FREE WATER OR SATURATED, <br /> USUALLY SOIL IS ODTAINED FROM BELOW <br /> ARE BASED ON INTERPRETATION OF BLOWCOUNT WATER TABLE <br /> IDATA, VISUAL APPEARANCE OF SOILS, AND/OR <br /> � TEST DATA. � <br /> � <br /> I <br /> I <br /> � : <br />' DAVID L. NELSON A�CIATES INC <br /> I '� ��' <br />