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SYMBOLS AND TERMINOLOGY ON TEST BORING LOG <br /> SYMBOLS <br />Drilling and Sampling Laboratory Testing <br />Symbol Description <br />HSA 3-1/4” LD. Hollow stem auger <br />_ FA 4”, 6” or 10” diameter flight auger <br />_HA 2”, 4”, or 6” hand auger <br />_DC 2-1/2”, 4”, 5”, or 6” steel drive casing <br />_RC Size A, B or N rotary casing <br />PD Pipe drill or cleanout tube <br />CS Continuous split barrel sampling <br />DM Drilling mud <br />JW Jetting water <br />SB 2” O.D. split barrel sampling <br />_L 2-1/2” or 3-1/2” O.D. SB liner sampler <br />_T 2” or 3” thin walled tube sample <br />3TP 3” thin walled tube using pitcher sampler <br />_TO 2” or 3” thin walled tube using Osterberg <br /> sampler <br />W Wash sample <br />B Bag sample <br />P Test pit sample <br />_Q BQ, NQ, or PQ wire line system <br />_X AX, BX, or NX double tube barrel <br />N Standard penetration test, blows per foot <br />CR Core recovery, percent <br />WL Water level <br />ź Water level <br />NMR No measurement recorded, primarily due <br /> to presence of drilling or coring fluid. <br />Symbol Description <br />W Water content, % (ASTM** D2216) <br /> D Dry density, pcf <br /> LL Liquid limit (ASTM D4318) <br /> PL Plastic limit (ASTM D4318) <br /> -Inserts in last column (Qu or RQD)- <br />Qu Unconfined compressive strength, psf (ASTM D2166) <br />Pq Penetrometer reading, tsf (ASTM D1558) <br />Ts Torvane reading, tsf <br />G Specific gravity (ASTM D854) <br />SL Shrinkage limits (ASTM D427) <br />OC Organic content-combustion method (ASTM D2974) <br />SP Swell pressure, tsf (ASTM D4546) <br />PS Percent swell under pressure (ASTM D4546) <br />FS Free swell, % (ASTM D4546) <br />SS Shrink swell, % (ASTM D4546) <br />pH Hydrogen ion content-Meter Method (ASTM D4972) <br />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 (ASSTM D2850 and D4767) <br />D.S.* 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 electrical resistivity, ohm-cm (ASTM G57) <br />E* Pressuremeter deformation modulus, tsf (ASTM D4719) <br />PM* Pressuremeter test (ASTM D4719) <br />VS* Field vane shear (ASTM D2573) <br />IR* Infiltrometer test (ASTM D3385) <br />RQD Rock quality designation, percent <br />*Results shown on attached data sheet or graph <br />**ASTM designates American Society for Testing and Materials <br />TERMINOLOGY <br />Particle Sizes Soil layering and Moisture <br />Type Size Range <br />Boulders > 12” <br />Cobbles 3” – 12” <br />Coarse gravel 3/4” – 3” <br />Fine gravel #4 sieve – 3/4” <br />Coarse sand #4 - #10 sieve <br />Medium sand #10-#40 sieve <br />Fine sand #40-#200 sieve <br />Silt 100% passing #200 sieve and > 0.005mm <br />Clay 100% passing #200 sieve and < 0.005mm <br />Term Visual Observation <br />Lamination Up to 1/4” thick stratum <br />Varved Altering laminations of any combination of <br /> clay, silt, fine sand, or colors <br />Lenses Small pockets of different soils in a soil mass <br />Stratified Altering layers of varying materials or colors <br />Layer 1/4” to 12” thick stratum <br />Dry Powdery, no noticeable water <br />Moist Damp, below saturation <br />Waterbearing Pervious soil below water <br />Wet Saturated, above liquid limit <br />Gravel Content Standard Penetration Resistance <br />Coarse-Grained Soils Fine-Grained Soils Cohesionless Soils Cohesive Soils <br />% Gravel Description <br />2-15 A little gravel <br />16-49 With gravel <br />% Gravel Description <br /> < 5 Trace of gravel <br />5-15 A little gravel <br />16-30 With gravel <br />31-49 Gravelly <br />N-Value Relative Density <br />0-4 Very loose <br />5-10 Loose <br />11-30 Medium dense <br />31-50 Dense <br /> > 50 Very dense <br />N-Value Consistency <br />0-4 Very soft <br />5-8 Soft <br />9-15 Firm <br />16-30 Hard <br /> > 30 Very hard