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I I GENERAL NOTES DRILLING & SAMPLING SYMBOLS: I 5S ST PA 08 AS JS VS I I Split Spoon - 1 3/8" 1.0., 2" 0.0. Unless otherwise noted Shelby Tube - 2: 0.0., Unless otherwise noted Power Auger Diamond Bit -NX,BX, AX Auger Sample Jar Sample Vane Shear OS HS WS FT RB 5S PM GS Osterberg Sampler - J" Shelby Tube Hollow Stem Auger Wash Sample Fish Tail . Rock Bit Bulk Sample Pressuremeter Test, In-Situ Giddings Sampler Standard "N" Penetration: Blows per foot of a 140 pound hammer falling 30 inches on a 2 inch 0.0. split spoon sampler, except where otherwise noted. I WATER LEVEL MEASUREMENT SYMBOLS: I WL WS WD A8 Water Level While Sampling While Drilling After Boring WCI : DCI : BCR: ACR: Wet Cave In Dry Cave In Before Casing Removal After Casing Removal I Water levels indicated on the boring logs are the levels measured in the boring at the times indicated. In pervious' soils, the indicated elevations are considered reliable groundwater levels. In impervio\.lS soils, the accurate determination of ground water elevations may not be possible, even after several clays of observations; additional evidence of. ground water elevations must be sought. I GRADATION DESCRIPTION & TERMINOLOGY: I Coarse Grained or Granular Soils have more than 50% of their dry weight retained ona fl200 sieve; they are described as: boulders, cobbles, gravel or sand. Fine Grained soils have less than 30% of their dry weight retained on a /1200 sieve; they are described as: clays or clayey silts if they are cohesive and silts if they are non-cohesive. In addition to gradation, granular soils are defined on the basis of their relative in-place density and fine grained soils on the basis of their strength or consistency and their plasticity. . . Major Descriptive Term Component Of Components Also Percent Of Of Sample Size Range Present in Sample Drv Wei~ht Boulders . Over 8 in. (200 mm) Trace 1 - 9 Cobbles 8 inches to 3 inches Little 10 - 19 (200 mm to 75 mm) Gravel 3 inches to 114 sieve Some 20-34 (75 mm to 4.76 mm) Sand 1/4 to 11200 sieve And 35 - 50 (4.76 mm to 0.074 mm) Silt Passing 11200 sieve (0.074 mm to 0.005 mm) Clay Smaller than 0.005 mm I I I I I I CONSISTENCY OF COHESIVE SOILS: RELATIVE DENSITY OF GRANULAR SOILS: Unconfined Compressive Strength, Qu, tsf I I I Consistency N - Blows per ft. < 0.25 0.2' - 0.49 0.50 - 0.99 1.00 - 1.9~ 2.00 - 3.99 4.00 - 8.00 > 8.00 VerY Soft Soft Medium (Firm) Stiff Very Stitf Hard Very Hard G - 3 4 - 9 10 - 29 30 - 4~ 50-&0 80+ SOIL TESTING SERVICES, INC. Relative Density Ver'l Loose Loose Medium Dense Dense Very Dense Ex:remely Dense