Laserfiche WebLink
r \ <br /> RELATIVE DENSITY OR CONSISTENCY VERSUS SPT N-VALUE TEST SYMBOLS <br /> COHESIONLESS SOILS COHESIVE SOILS %F Percent Fines <br /> Approximate AL Atterberg Limits: PL=Plastic Limit <br /> Density N(blows/ft) Approximate Consistency N(blows/ft) Undrained Shear LL=Liquid Limit <br /> Relative Density(%) Strength(psf) CBR California Bearing Ratio <br /> Very Loose 0 to 4 0 - 15 Very Soft 0 to 2 <250 CN Consolidation <br /> Loose 4 to 10 15 - 35 Soft 2 to 4 250 - 500 DD Dry Density(pcf) <br /> Medium Dense 10 to 30 35 - 65 Medium Stiff 4 to 8 500 - 1000 DS Direct Shear <br /> Dense 30 to 50 65 - 85 Stiff 8 to 15 1000 - 2000 GS Grain Size Distribution <br /> Very Dense over 50 85 - 100 Very Stiff 15 to 30 2000 - 4000 K Permeability <br /> Hard over 30 >4000 MD Moisture/Density Relationship(Proctor) <br /> USCS SOIL CLASSIFICATION SYSTEM MR Resilient Modulus <br /> PID Photoionization Device Reading <br /> MAJOR DIVISIONS GROUP DESCRIPTIONS PP Pocket Penetrometer <br /> Approx.Compressive Strength(tsf) <br /> �� <br /> Gravel and �'.GW Well-graded GRAVEL SG Specific Gravity <br /> Coarse Clean Gravel TC Triaxial Compression <br /> Gravelly Soils <br /> Grained (little or no fines) 0V TV Torvane <br /> Soils o Qa GP Poorly-graded GRAVEL Approx.Shear Strength(tsf) <br /> More than ", <br /> 50%of Coarse Gravel with o Qa GM Silty GRAVEL UC Unconfined Compression <br /> Fraction Retained Fines(appreciable <br /> on No.4 Sieve amount of fines) AI;! GC Clayey GRAVEL SAMPLE TYPE SYMBOLS <br /> • <br /> • <br /> More than <br /> Sand and Clean Sand .'.'.' SW Well-graded SAND El (140 <br /> OD Split Spoon(SPT) <br /> Sandy Soils (little or no fines) • <br /> • (140 lb.hammer with 30 in.drop) <br /> SP Poorly-graded SAND T <br /> 50%Retained 1 Shelby Tube <br /> 50%or More _ <br /> on No. Sand with $M Silty SAND <br /> of Coarse ■ 3-1/4"OD Split Spoon with Brass Rings <br /> 200 Sieve Fines(appreciable - _ <br /> Fraction Passing :.?3,,, <br /> Size No.4 Sieve amount of fines) SC Clayey SAND Q <br /> Small Bag Sample <br /> ML SILT <br /> Fine Silt illi Large Bag(Bulk)Sample <br /> Liquid Limit <br /> Grained and % CL Lean CLAY U <br /> Soils Clay Less than 50% Core Run <br /> OL Organic SILT/Organic CLAY 7 Non-standard Penetration Test <br /> L (3.0"OD split spoon) <br /> MH Elastic SILT <br /> 50%or More Silt <br /> and Liquid Limit <br /> Passing Clay 50%or More )..ji CH Fat CLAY GROUNDWATER SYMBOLS <br /> No.200 Sieve Q Groundwater Level(measured at <br /> Size .) OH Organic SILT/Organic CLAY <br /> \ time of drilling) <br /> Highly Organic Soils L.A.-A...) <br /> PT PEAT 1 Groundwater Level(measured in well or <br /> 1 1 I, open hole after water level stabilized) <br /> COMPONENT DEFINITIONS COMPONENT PROPORTIONS <br /> COMPONENT SIZE RANGE PROPORTION RANGE DESCRIPTIVE TERMS <br /> Boulders Larger than 12 in <br /> Cobbles 3 in to 12 in <br /> Gravel 3 in to No 4(4.5mm) <5% Clean <br /> Coarse gravel 3 in to 3/4 in 5-12% Slightly(Clayey,Silty,Sandy) <br /> Fine gravel 3/4 in to No 4(4.5mm) <br /> Sand No.4(4.5 mm)to No.200(0.074 mm) <br /> Coarse sand No.4(4.5 mm)to No.10(2.0 mm) 12-30% Clayey,Silty,Sandy,Gravelly <br /> Medium sand No.10(2.0 mm)to No.40(0.42 mm) 30-50% Very(Clayey,Silty,Sandy,Gravelly) <br /> Fine sand No.40(0.42 mm)to No.200(0.074 mm) <br /> Silt and Clay Smaller than No.200(0.074mm) Components are arranged in order of increasing quantities. <br /> NOTES: Soil classifications presented on exploration logs are based on visual and laboratory observation. <br /> Soil descriptions are presented in the following general order: MOISTURE CONTENT <br /> Density/consistency,color,modifier(if any)GROUP NAME,additions to group name(if any),moisture DRY Absence of moisture,dusty, <br /> content. Proportion,gradation,and angularity of constituents,additional comments. dry to the touch. <br /> (GEOLOGIC INTERPRETATION) MOIST Damp but no visible water. <br /> Please refer to the discussion in the report text as well as the exploration logs for a more <br /> WET Visible free water,usually <br /> • <br /> ` complete description of subsurface conditions. soil is below water table. <br /> LEGEND OF TERMS AND <br /> SYMBOLS USED ON <br /> HWAGEOSIQENCES INC. EXPLORATION LOGS <br /> PROJECT NO.: FIGURE: A'1 <br /> LEGEND 00000.GPJ 2/27/15 <br />