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GENERAL TERMINOLOGY NOTES FOR <br /> SOIL IDENTIFICATION AND DESCRIPTION <br /> GRAIN SIZE GRAVEL PERCENTAGES <br /> Tenn ASTM Term Percent <br /> Boulders Over 12" A little Gravel 3%to 15% <br /> Cobbles 3"to 12" With Gravel 15%to 30% <br /> Gravel #4 sieve to 3" Gravelly 30%to 50% <br /> Sand #200 to 44 sieve <br /> Fines(silt and clay) Pass#200 sieve <br /> CONSISTENCY OF PLASTIC SOILS RELATIVE DENSITY <br /> OF NON-PLASTIC SOILS <br /> Term N-Value. BPF <br /> Very Soft less than 2 Tenn N-Value,BPF <br /> Soft 24 Ven Loose 0--4 <br /> Medium 5-8 Loose 5-10 <br /> Stiff 9-15 Medium Dense I 1-30 <br /> Very Stiff 16-30 Dense 31-50 <br /> Hard Greater than 30 Very Dense Greater than 50 <br /> MOISTURE/FROST CONDITION LAYERING NOTES. <br /> D(Dry): Absence of moisture,dusty,dry to <br /> touch. Laminations: Layers less than'/"thick of <br /> M(Moist): Damp; although free water not differingmaterial or color. <br /> visible. Soil may still have a high <br /> water content(over`optimum"). Lenses: Pockets of layers greater than'/2" <br /> W(Wet/ thick of differing material or color. <br /> Waterbearing): Free water visible. Intended to <br /> describe non-plastic soils. <br /> F(Frozen): Soil frozen. <br /> FIBER CONTENT OF PEAT ORGANIC DESCRIPTION <br /> Tenn Fiber Content(Visual Estimate) <br /> Fibric Greater than 67% Non-peat soils are.described as organic, if soil is <br /> Hemic 33 to 67% judged to have sufficient organic content to influence <br /> Sapric Less than 33% the soil properties. <br />