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BORING LOG NOTES continued <br />TERMS for RELATIVE DENSITY of NON-COHESIVE SOIL <br />Term <br />Very Loose <br />Loose <br />Medium Dense <br />Dense <br />Very Dense <br />Standard Penetration Resistance "N" <br />4 or less <br />5 to 10 <br />11 to 30 <br />31 to 50 <br />Over 50 biows/foot <br />TERMS for RELATIVE CONSISTENCY of COHESIVE SOIL <br />Term <br />Very Soft <br />Soft <br />Medium Stiff <br />Stiff <br />Very Stiff <br />Hard <br />Unconfined Compressive Strenqth <br />0 to 0.25 tons/square-foot (ts� <br />0.25 to 0.50 tsf <br />0.50 to 1.00 tsf <br />1.00 to 2.00 tsf <br />2.00 to 4.00 tsf <br />Over 4.00 tsf <br />DEFINITION of MATERIAL by DIAMETER of PARTICLE <br />Boulder <br />Cobble <br />Gravel <br />Coarse Sand <br />Medium Sand <br />Fine Sand <br />Silt <br />Clay <br />8-inches+ <br />3 to 8 inches <br />3 inches to 5mm <br />5mm to 0.6mm <br />0.6mm to 0.2mm <br />0.2mm to 0.074mm <br />0.074mm to 0.005mm <br />less than 0.005mm <br />A6 Z�L� <br />