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SYMBOLS AND TERMINOLOGY ON TEST BORING LOG w Cs b <br /> SYMBOLS <br /> Drilling and Sampling Laboratory Testing <br /> 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,is <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 Content(ASTM D2974) <br /> _Q BQ,NQ,or PQ wire line system SP Swell Pressure,tsf(ASTM D4546) <br /> _X AN,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/1 <br /> CC Chloride content,parts/million or mg/1 <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 /> TERMINOLOGY <br /> Particle Sizes Soil Layering and Moisture <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 Content Standard Pentration Resistance(N-value) <br /> Coarse-Grained Soils Fine-Grained Soils Cohesionless Soils Cohesive Soils <br /> %Gravel Description %Gravel Description N-Value Relative Density N-Value Consistency <br /> 2-15 A little gravel 2-5 Trace of gravel 0-4 Very loose 0-4 Very soft <br /> 16-30 With gravel 5-15 a little gravel 5- 10 Loose 5-8 Soft <br /> 31-49 Gravelly 16-30 with gravel 11-30 Medium dense 9-15 Firm <br /> 31-49 Gravelly 31-50 Dense 16-30 Hard <br /> >50 Very dense >30 Very hard <br />