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GENERAL TERMINOLOGY NOTES FOR <br />SOIL IDENTIFICATION AND DESCRIPTION <br />GRAIN SIZE <br />Terns ASTM <br />Boulders <br />Cobbles <br />Gravel <br />Sand <br />Fines (silt and clay) <br />Over 12" <br />3" to 12" <br />#4 sieve to 3" <br />#200 to #4 sieve <br />Pass #200 sieve <br />CONSISTENCY OF PLASTIC SOILS <br />Term <br />Very Soft <br />Soft <br />Medium <br />Stiff <br />Very Stiff <br />Hard <br />N- Value. BPF <br />less than 2 <br />2 -4 <br />5 -8 <br />9 -15 <br />16 -30 <br />Greater than 30 <br />MOISTURE/FROST CONDITION <br />D (Dry): <br />M (Moist): <br />W (Wet/ <br />Waterbearing): <br />F (Frozen): <br />Absence of moisture, dusty, dry to <br />touch. <br />Damp, although free water not <br />visible. Soil may still have a high <br />water content (over `optimum "). <br />Free water visible. Intended to <br />describe non - plastic soils. <br />Soil frozen. <br />FIBER CONTENT OF PEAT <br />Term <br />Fibric <br />Heroic <br />Sapric <br />Fiber Content (Visual Estimate) <br />Greater than 67% <br />33 to 67% <br />Less than 33% <br />GRAVEL PERCENTAGES <br />Term Percent <br />A little Gravel <br />With Gravel <br />Gravelly <br />3% to 15% <br />15% to 30% <br />30% to 50% <br />RELATIVE DENSITY <br />OF NON- PLASTIC SOILS <br />Tenn <br />Very Loose <br />Loose <br />Medium Dense <br />Dense <br />Very Dense <br />N- Value. BPF <br />0-4 <br />5'-10 <br />11 -30 <br />31 -50 <br />Greater than 50 <br />LAYERING NOTES. <br />Laminations: Layers less than' / "thick of <br />differingmaterial or color. <br />Lenses: <br />Pockets of layers greater than %" <br />thick of differing material or color. <br />ORGANIC DESCRIPTION <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 />- 3 2 - <br />