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r , <br /> tir <br /> S <br /> SOIL CLASSIFICATION CHART <br /> I <br /> eOL LET DESCRIPTION MAJOR DIVISIONS <br /> DELL-GRADED GRAVELS OR GRAVEL-SAND ti <br /> O 0 MIXTURES, LITTLE GP, Ifo CINES CLEAN GRAVELS <br /> z • <br /> a4s GP POORLY-GRADED GRAVELS OR GRAVEL-SAND (LITTLE OR NO FINES) � a z r H <br /> A MIXTURES. LITTLE OR NO FINES L0 V) <br /> scow % w �' _J _j <br /> GM SILTY GRAVELS. GRAVEL-SAND-SILT GRAVELS WITH s i g o Q w o " w <br /> MIXTURES FINES C7 f- w a r <br /> N W H <br /> in <br /> 4 GC CLAYEY GRAVELS. GRAVEL-SAND-CLAY (APPRECIABLE AMOUNT w � h � u uuii V ' G] r <br /> ac •t ac u l •+ cn .t Ll I c] w <br /> !�f MIXTURES OF FINES) o d d r, u a Z o 1— 5- <br /> ;E U -1 NN W O O O N W <br /> WELL-GRADED SAND OR GRAVELLY SANDS, tis in m z Q o m o <br /> ' SW LITTLE OR NO FINES CLEAN SANDS O "' A r w (5 a z a 1 <br /> z a_ u �r x 1: zu> a <br /> SP POORLY-GRADED SANDS OR GRAVELLY SANDS. (LITTLE OR NO FINES) () -.r o a W o (n z s u, ui <br /> LITTLE OR NO PITIES ❑ ��, a H r- <br /> a s w <br /> SM SILTY SANDS, SAND-SILT MIXTURES <br /> SANDS�ESITFi w 7 tn z O ,ku L9 ui o <br /> ,t _i U it of <br /> (APPRECIABLE AMOUNTW R _j � 7- � LJ a <br /> Sc CLAYEY SANDS, SAI1D-CLAY MIXTURES OF FINCS) o o F, "' :i; <br /> INORGANIC SILTS AND VERY FIVE SANDS. tr �4 <br /> a <br /> i�r o <br /> ML ROCK FLOUR. SILTY OR CLAYEY FINE SANDS N z W <br /> OR CLAYEY SILTS WITH SLIGHT PLASTICITY "tn w u <br /> INORGAfIIC CLAYS OF LOWTO MEDIUI4 SALTS & CLAYS j N L <br /> CL PLASTICITY. GRAVELLY CLAYS. SANDY + W a <br /> CLAYS, SILTY CLAYSr LEAN CLAYS LIQUID LIMIT LESS THAN 50 O u N ' a <br /> 0 <br /> ORGAIIIC SILTS kND ORGAtIIC SILT-CLAYS WE: oo w <br /> 1� OL OF LOW PLASTICITY N - <br /> 1 IIJORGAIIIC SILTS, MICACEOUS OR <br /> C; o � <br /> MH DIATOMACEOUS FINE SANDY OR SILTY Q i z z cn <br /> SOILS. ELASTIC SILTS SILTS & CLAYS 0 x a w x <br /> CN INORGANIC CLAYS OF HIGH PLASTICITY. <br /> W a I—~ ~ <br /> FAT CLAYS LIQUID LIMIT GREATER THAN 50 Z r = <br /> r _ <br /> ORGAIII C CLAYS OF MEDIUM TO HIGH LL-�� w _j OH PLASTICITY,, ORGAIIIC SILTS <br /> of <br /> z' tn <br /> PT PEAT AND OTHER HIGHLY ORGANIC SOILS <br /> HIGHLY ORGANIC SOILS <br />