pf_01677 - Laserfiche WebLink

Home

GENERAL ?VOTES DRILLING 3: SAMPLING SYMBOLS: SS : Split Spoon - L W LD., 2" O.D. Unless otherwise noted ST : Shelby Tube - 2: O.D., Unless of wrwisa Noted PA s Power Auger DB : Diamond Bit - NX, BX, AX AS : Auger Sample 3S s 3ar Sample VS s Vane Shear OS : Osterberg Sampler - 3" Shelby Tube HS : Hollow Stem Auger WS : Wash Sample FT : Fish Tail - RB : Rock Bit BS : Bulk Sample FM Pres.suremater Test, In -Stu GS Giddings Simpler S:=dard "Na Penetrations Blows per foot ci a 140 pound hammer falling 30 inches on a 2 .nett O.D. split spoon sampler, except where otherwise notes. WATLR LEVEL MEASUREMENT SYMBOLS: WL s Water Level WCI : Wet Cave In WS : While Sampling DC.I : Dry Cave In W'D : While Drilling BCR : Before Casing Removal AS : After Boring ACR : After Casing Removal 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 couidered reliable grounawater levels. In impervious soils, the aecttrate determination of grannd water elevations may not be possible, even after several days of observations; additional evidence of ground water elevations must be sought. GRADATION DESCRIPTION & TERMINOLOGY: Coarse Grained or Granular Soils have more than 50% of their dry weight retained an a #200 sieve; they are described as: boulders, cobbles, gravel or sand. Fite Grained soils have less than 30% of their dry weight retained on a 0200 sieve; they are described as: clays or clayey silts if they are cohesive and silts it they are non -cohesive. In addition to gradation, granular soils are defined on the basis e. their relative in -place density and fine grained soils on the basis of their strength or consista=y and their plasticity. ,`lajor Descriptive Term Component Of Componenu Also Percent OBE Of OfSarnnvle Size Ranste Present in Sample Dry Weight Boulders Over 3 in. (200 mm) Trace I - g Cobbles 8 inches to 3 inches Little 10 - L9 (200 mm to 73 mm) Gravel 3 inches to 04 sieve Some 20 - 34 (73 mm to 4.76 mm) Sand #4 to #200 sieve And 33 - 50 (4.76 mm to 0.074 mm) 511t Passing #200 sieve (0-074 mm to 0.005 mm) Clay Smaller than 0.005 mm CONSISTENCY OF COHESIVE AILS: Unconfined Compressive Strength, Qu, tsf Consistency RELATIVE DENSrrY OF GRANULAR SOILS: N - Blows per ft. Relative Density < 0.25 Very Soft G - 3 Very Loose 0.25 - 0.49 Soft 4 - 9 Loose 0.50 - 0.99 Medium (Firm) 10 - 29 Medium Dense 1.00 - 1.99 5:if: 30 - 49 Dense 2.00 - 3.99 (very StUf 30 - 80 Very Dense 4.00 - 8.00 Hard 30+ Ex:remely Dense > 3.00 Very Hard STS CONSULTANTS LTD.