Laserfiche WebLink
F - <br /> METHOD OF SOIL CLASSIFICATION <br /> MAJOR DIVISIONS SYMBOLS TYPICAL NAMES <br /> GW WELL GRADED GRAVELS OR GRAVEL-SAND MIXTURES LITTLE OR NO FINES <br /> NGRAVELS <br /> J GP 'n POORLY GRADED GRAVELS OR GRAVEL-SAND MIXTURES, LITTLE OR NO FINES <br /> .. •• <br /> C] <br /> s� (NTE Tww I/2 OF GSM SILTY GRAVELS, GRAVEL-SAND-SILT MIXTURES <br /> q+Ti ca4RSE FR.CTI4N I <br /> W NO•4 SIEVE SIZE) o <br /> Z Gc o CLAYEY GRAVELS GRAVEL-SAND-CLAY MIXTURES <br /> /Q J <br /> LL H 4' <br /> l3W <br /> WELL GRADED SANDS OR GRAVELY SANDS, LITTLE OR NO FINES <br /> SANDS <br /> Li <br /> 0 SP POORLY GRADED SANDS OR GRAVELY SANDS, LITTLE OR NO FINES <br /> C3 W OGRE THAN I/2 of <br /> U CammE F4ACTIOH SM <br /> SILTY SANDS SAND-SILT MIXTURES <br /> < <br /> N0. 4 SIEVE sIZo <br /> SC CLAYEY SANDS, SAND-CLAY MIXTURES <br /> N M ML INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOVER. SILTY OR CLAYEY <br /> J SINS & CLAYS " FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> p H INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY GRAVELY CLAYS <br /> N ' LLCSO CC SANDY CLAYS, SILTY CLAYS, LEAN CLAYS <br /> W ❑L �;�� ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br /> Z X41 <br /> INORGANIC SILTS. MICACEOUS 132 DIATOMACECOUS FINE SANDY OR SILTY <br /> Q' MH SOItS ELASTIC SILTS <br /> L-3 SILTS & CLAYS <br /> Z CH INORGANIC CLAYS OF HIGH PLASTICITY FAT CLAYS <br /> L L>50 <br /> ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY 13RGANIC SILTY CLAYS <br /> CH ORGANIC LATS <br /> HIGHLY ORGANIC SOILS Pt PEAT AND OTHER HIGHLY ORGANIC SOILS <br /> CLASSIFICATION CHART <br /> c UNIFIED SOIL CLASSIFICATION SYSTEM ) <br /> RANGE OF GRAIN SIZES <br /> CLASSIFICATION US. STANDARD GRAIN SIZE SANDS AND GRAVELS BLOVS/FOOT <br /> SIEVE SIZE IN MILLIMETERS <br /> VERY LOOSE 0 - 4 <br /> BOULDERS ABOVE 12' ABOVE 13' LOOSE 4 - 10 <br /> COBBLES 12• TO 31 305 TO 762 MEDIUM DENSE IO - 30 <br /> DENSE 30 - 50 <br /> GRAVEL 3' TO NO 4 762 TO 476 VERY DENSE OVER 50 <br /> COARSE 3' r0 I/4 762 TQ 191 <br /> FINE 3/4' TO NO. 4 191 TO 476 RELATIVE DENSITY <br /> SAND NO 4 TO NO. 200 4 760 TO 0,074 <br /> SILTS AND CLAYS BLOWS/FOOT <br /> COARSE NO 4 TO NO W 4760 To 2000 <br /> MEDIUM NO. 10 TO NO 40 2000 TO 0 420 <br /> VERY SOFT 0 - 2 <br /> FINE NO 40 TO NO 200 0 420 TO 0 074 <br /> SOFT 2 - 4 <br /> - <br /> SILT S 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 OF 140 POUND HAMMER FALLING 30 INCHES TO DRIVE a CONSISTENCY <br /> 2 INCH OD (1-3/8 INCH ID) SPLIT SPOON (ASTM D-1586) <br /> PAGE OF <br />