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Symbol Description Symbol Description <br />HSA 3 1/4" LD. Hollow Stem Auger MC Moisture content, % (ASTM D2216) <br />FA Flight Auger DD Dry Density, pcf <br />HA Hand Auger LL Liquid Limit (ASTM D4318) <br />RC Size A, B, or N rotary casing PL Plastic Limit (ASTM D4318) <br />CS Continuous split barrel sampling <br />DM Drilling Mud - Inserts in last column <br />JW Jetting Water <br />SB 2" O.D. split barrel sampling Qu Unconfined compressive strength, psf (ASTM D2166) <br />_L 2 1/2" or 3 1/2" OD split barrel liner sampler Pq Penetrometer Reading, tsf (ASTM D1558) <br />_T 2" or 3" thin walled tube sample Ts Torvane Reading, ts <br />W Wash sample G Specific Gravity (ASTM D854) <br />B Bag sample SL Shrinkage limits (ASTM D427) <br />P Test Pit sample OC Organic Contenct (ASTM D2974) <br />_Q BQ, NQ, or PQ wire line system SP Swell Pressure, tsf (ASTM D4546) <br />_X AX, BX, or NX double tube barrel PS Percent swell under pressure (ASTM D4546) <br />N Standard penetration test, blow per foot FS Free swell, % (ASTM D4546) <br />CR Core recovery, percent SS Shrink swell, % (ASTM D4546) <br />WL Water level pH <br />n/a no measurement recorded SC Sulfate content, parts/million or mg/l <br />CC Chloride content, parts/million or mg/l <br />C One dimensional consolidation (ASTM D2435) <br />Qc Triaxial compression (ASTM D2850 and D4767) <br />DS Direct Shear (ASTM D3080) <br />K Coefficient of permeability, cm/sec (ASTM D2434) <br />P Pinhole Test (ASTM D4647) <br />DH Double hydrometer (ASTM D4221) <br />MA Particle size analysis (ASTM D422) <br />R Laboratory electreical resistivity, ohm-cm (ASTM G57) <br />VS Field vane shear (ASTM D2573) <br />RQD Rock quality designation, percent <br />IR Infiltration Test (ASTM D3385) <br />Type Size Range Term Visual Observation <br />Boulders > 12" Lenses Small pockets of different soils <br />Cobbles 3" - 12" Lamination < 1/4" thick stratum <br />Coarse gravel 3/4" - 3" Layer 1/4" - 12" thick stratum <br />Fine gravel #4 sieve - 3/4" Stratified Altering lenses of varying materials or colors <br />Coarse sand #4 sieve - #10 sieve Varved Altering laminations of clay, silt, fine sand, or colors <br />Medium sand #10 sieve - #40 sieve Dry Powdery, no noticeable water <br />Fine sand #40 sieve - #200 sieve Moist Damp, below saturation <br />Silt 100% passing #200 sieve, and > 0.002mm Wet MC above plastic limit <br />Clay 100% passing #200 sieve, and < 0.002mm Waterbearing Pervious soil below water table <br />Saturated Cohesive soil with MC above liquit limit <br />% Gravel Description % Gravel N-Value Relative Density <br />2 - 15 A little gravel 2 -5 0 - 4 Very loose <br />16 - 30 With gravel 5 -15 5 - 10 Loose <br />31 - 49 Gravelly 16 - 30 11 - 30 Medium dense <br />31 - 49 31 - 50 Dense <br />>50 Very dense <br />Particle Sizes Soil Layering and Moisture <br />SYMBOLS <br />SYMBOLS AND TERMINOLOGY ON TEST BORING LOG <br />Drilling and Sampling Laboratory Testing <br />TERMINOLOGY <br />Gravel Content Standard Pentration Resistance (N-value) <br />Coarse-Grained Soils Fine-Grained Soils Cohesionless Soils Cohesive Soils <br />Description <br />Trace of gravel <br />a little gravel <br />with gravel <br />Gravelly <br />Very hard <br />N-Value <br />0 - 4 <br />5 - 8 <br />9 - 15 <br />16 - 30 <br />>30 <br />Consistency <br />Very soft <br />Soft <br />Firm <br />Hard