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i <br /> UNIFIED SOIL CLASSIFICATION - ASTM D2487-85 <br /> MAJOR DIVISIONS TYPICAL NAMES <br /> G w WELL GRADED GRAVELS ,=OR <br /> •.•: WITHOUT SANW,LITTL OR VO FL�J"rS <br /> GRAVELS CLEAN GRAVELS WITH •-• •.r <br /> LITTLE OR NO FINES . . <br /> G P �:• ':•• POORLY GRADED GRAVELS ATM OR <br /> ILALF COARSE Of; W ICUI•SAND.LITRE OR NO FINES <br /> x HALF AR �•�y. <br /> FRACTION IS <br /> LaRGERTHAN G M SILTYGRA.VEL.S,SILTY GRAVELS <br /> Na.s SLE VE WTT•rI SAND <br /> > SIS GRAVELS W -H OVER <br /> 12%FLYES <br /> H G C CLAYEY GRAVELS.CLAYEY <br /> GRAVELS WITH SAND <br />�Q- <br />>a � v <br /> < S w ����� WELL GRADED SANDS'WITIi OR'WrirI- <br /> _ OUT GRAVEL,LITLL:OR NO FINES <br /> CLE AIN SANDS 14= <br /> • <br /> x1 z o L=F-OR NO FLIES <br /> cn < z SAi"S S P r • * POORLY GRADED SANDS WITH OR <br /> • WTTHOLZ'GRAVEL.LCI-i'LE OR.NO—ruES <br /> < MCRE-LHk,4 <br />'U = HALT COARSE S M • • r SILTY SANDS A=OR <br /> F FRACTION IS . . WITHOUT GRAVEL <br /> a <br /> 2411 SAXDS'WITH OVER • • <br />'2 THAN No,s 12%cINES • • e <br /> SIEVE SIS S C • • CLAYEY SANDS WITH OR <br /> W=OLrr GRAVEL <br /> Nf L NORGANIC SILTS AND VERY FINE SANDS, <br /> W ROCK FLOUR SILTS WITH SANDS AND <br /> z SILTS and CLAYS GRAVELS <br /> > C L INORGANIC CLAYS OF LOW TO MEDIUM <br /> + LIQLm LT':ITF 50%OR LESS PL.ASTICCTY,CLAYS WITH SANDS A,\,rD <br /> O — RAVE LEAN CLAYS <br /> r O L i ORGANIC SILTS OR CLAYS OF <br /> o f ' LOW PLASTICITY <br /> � a <br /> M H INORGANIC SILTS,\ZCACEOfJS OR DIA- <br /> TOMAC:OUS.FINE SANDY OR SILTY SOQ.S. <br /> = z SILTS and CLAYS FL.As7c SrLTS <br /> z C H INORGANIC CLAYS OF HIGH PLAS17Cr Y, <br /> < UQU ED LDZT GREATER THAN 50% FAT CLAYS <br /> x <br /> w t O S �� ORGANIC SILTS OR CLAYS OF MEDIUM <br /> a TO HIGH PtxTICITY <br /> HIGHLY ORGANIC SOILS P t PEAT AND OTHER HIGHLY ORGANIC <br /> SOa.S <br /> '1/HF enc <br />