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<br />GENERAL TERMINOLOGY NOTES FOR <br />SOIL IDENTIFICATION AND DESCRIPTION <br /> <br />Tenn <br /> <br />Boulders <br />Cobbles <br />Gravel <br />Sand <br />Fines (sill and clay) <br /> <br />GRAIN SIZ,E <br /> <br />GRA VEL PERCENTAGES <br /> <br />ASTM <br /> <br />Term <br /> <br />Percent <br /> <br />Over 12" <br />3" 1012" <br />#4 sieve to :.1" <br />#200 to #4 sieve <br />Pass #200 sieve <br /> <br />A hnle Gravel <br />Willi Grdvel <br />Grdvelly <br /> <br />3%to ISo,!,} <br />15% to 30% <br />30% to 50% <br /> <br />CONSISTENCY OF PLASTIC SOILS <br /> <br />Term <br />Very Soft <br />Soft <br />Medium <br />Stiff <br />Very Stiff <br />Hard <br /> <br />RELA TlVE DENSITY <br />OF NON-PLASTIC SOILS <br /> <br />N-\lalue~ BPF <br />less lllan 2 <br />2-4 <br />5-8 <br />9-15 <br />16-30 <br />Greater than 30 <br /> <br />Tenn <br />Very Loose <br />Loose <br />Medium Dense <br />Dense <br />Very Dense <br /> <br />N-Value. BPF <br />0-4 <br />~-IO <br />1l-30 <br />31-50 <br />Greater than 50 <br /> <br />MO~TUREffROSTCONDITION <br /> <br />Absence of moisture, dusty, dry to <br />touch. <br />Damp, allllOUgh free water not <br />visible~ Soil may still have a high <br />water content (over 'optimwn") <br /> <br />D (Dry): <br /> <br />M (Moist): <br /> <br />W (Wel! <br />Waterbearing): <br /> <br />LAYERING NOTES <br /> <br />Laminations: <br /> <br />Layers tess than Y; "thick of <br />differingmaterial or cotor <br /> <br />Lenses: <br /> <br />Pockets of tayers greater than Y;" <br />thick of differing material or color <br /> <br />Free water visible. Intended to <br />describe non-plastic soils. <br />S()iffrozen. . - <br /> <br />F(Frozeiij: <br /> <br />FIBER CONTENT OF PEAT <br /> <br />Term <br />Fibric <br />Hemic <br />Sapric <br /> <br />ORGANIC DESCRIPTION <br /> <br />Fiber Content (Visual Estimate) <br />Greater than 67% <br />33 to G7% <br />Less than 33% <br /> <br />Non-peat soils are described as organic, if soil is <br />judged to have sufficient organic content to influence. <br />the soil properties. <br />