Laserfiche WebLink
I <br /> E ®®ALArAMKows <br /> ®�R <br /> METHOD OF SOIL CLASSIFICATION <br /> MAJOR DIVISIONS SYMBOLSI TYPICAL NAMES <br /> Gw WELL GRADED GRAVELS 13R GRAVEL-SAND MIXTURES, LITTLE OR NO FINES <br /> N N GRAVELS <br /> f GPPOORLY GRADED GRAVELS OR GRAVEL-SAND MIXTURES. LITTLE OR NO FINES <br /> 4 <br /> } C3.. <br /> H 04ME THAN V2 OF GM SILTY GRAVELS. GRAVEL-SAND-SILT MIXTURES <br /> COARSE FRAMON > <br /> LSI Na 4 SIEVE SIM o <br /> 4- <br /> GC c CLAYEY GRAVELS, GRAVEL-SAND-CLAY MIXTURES <br /> I ¢ d <br /> I km N SANDS S W s <br /> _ WELL GRADED SANDS OR GRAVELY SANDS LITTLE OR NO FINES <br /> I SP x POMZLY GRADED SANDS OR GRAVELY SANDS. LITTLE OR NO FINES <br /> L3 (MORE THAN V2 OF SM SILTY SANDS SAND-SILT MIXTURES <br /> U ° COARSE FRACTION< <br /> � NQ 4 SIEVE SIZD <br /> SC CLAYEY SANDS, SAND-CLAY MIXTURES <br /> I , <br /> INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOWER, SILTY OR CLAYEY <br /> J > SILTS & CLAYS ML FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> C3 H INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY GRAVELY CLAYS <br /> OR LL<50 CL SANDY CLAYS. SILTY CLAYS. LEAN CLAYS <br /> ii <br /> LL.j GL ;:�: ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br /> Z 'i'r <br /> r Q INORGANIC SILTS, MICACEOUS OR DIATOMACECOUS FINE SANDY OR SILTY <br /> cz MH 'SOILS. ELASTIC SILTS <br /> 0 N SILTS & CLAYS <br /> Z <br /> CH INORGANIC CLAYS OF HIGH PLASTICITY FAT CLAYS <br /> .� LL>50 <br /> ORGANIC CLAYS OF MEDIUk1 TO HIGH PLASTICITY ORGANIC SILTY CLAYS <br /> ❑H ��� ORGANIC SILT$ <br /> HIGHLY ORGANIC SOILS pt PEAT AND OTMER HIGHLY ORGANIC SOILS <br /> CLASSIFICATION CHART <br /> C UNIFIED SOIL CLASSIFICATION SYSTEM ) <br /> RANGE OF GRAIN SIZES SANDS AND GRAVELS HLavS/FOpT <br /> CLASSIFICATION U.S. STANDARD GRAIN SIZE <br /> i SIEVE SIZE IN MILLIMETERS <br /> VERY LOOSE 0 - 4 <br /> BOULDERS ABOVE I2• ABOVE 13• <br /> LOOSE a - to <br /> COBBLES 12' TO 3' 365 TO 76.2 MEDIUM DENSE 10 - 30 <br /> DENSE 30 - 30 <br /> GRAVEL 31 TO NO 4 762 TO 476 VERY DENSE OVER 50 <br /> COARSE 3' TO I/4' 762 TO I91 <br /> FINE 3/4 TO NO, 4 191 TO 476 RELATIVE DENSITY <br /> ` SAND NO 4 TO NO 200 4760 TO 0.074 SILTS AND CLAYS BLOWS/FOOT <br /> COARSE NO. 4 TO NO 10 4 768 TO 2000 <br /> MEDIUM NO. 10 TO NO. 40 2000 TO 0 420 <br /> FINE ND. 40 TO NO ZOO 0420 TO 0074 VERY SOFT 0 - 2 <br /> _ SOFT 2 - a <br /> SILT & CLAY BELOW NO 200 BELOW 0074 MEDIUM STIFF 4 - 8 <br /> STIFF B - 16 <br /> GRAIN SIZE CHART VERY STIFF 16 - 32 <br /> HARD OVER 32 <br /> + NUMBER OF BLOWS QF 140 POUND HAMMER FALLING 30 INCHES TQ DRIVE A CONSISTENCY <br /> INCH OD (1-3/8 INCH ID) SPLIT SPOON (ASTM 0-1586) <br /> I <br /> PAGE OF <br />