RELATIVE DENSITY - COARSE GRAINED SOILS <br />RELATIVE <br />DENSITY <br />SPT N-VALUE <br />D&M SAMPLER <br />(140 Ibs hammer) <br />D& <br />(300 <br />VERY LOOSE <br />< 4 <br />< 11 <br />LOOSE <br />4-10 <br />11 - 26 <br />MEDIUM DENSE <br />10 - 30 <br />26 - 74 <br />DENSE <br />30 - 50 <br />74 - 120 <br />VERY DENSE <br />> 50 <br />> 120 <br />CONSISTENCY - FINE GRAINED SOILS <br />< 42UU (.U/5 mm) <br />#200 - #40 (.425 mm <br />#40 - #10 (2 mm) <br />#10 - #4 (4.75 mm) <br />#4 - 0.75 inch <br />0.75 - 3 inch <br />3 - 12 inches <br />USCS GRAIN SIZE <br />FINES <br />SAND Fine <br />Mediur <br />Coarse <br />GRAVEL Fine <br />Coarse <br />COBBLES <br />CONSISTENCY <br />SPT N-VALUE <br />D&M SAMPLER <br />(140 Ibs hammer) <br />D&M SAMPLER <br />(300 Ibs hammer) <br />POCKET PEN. / <br />UNCONFINED (TSF) <br />MANUAL PENETRATION TEST <br />VERY SOFT <br />< 2 <br />< 3 <br />< 2 <br />< 0.25 <br />Easy several inches by fist <br />SOFT <br />2-4 <br />3-6 <br />2-5 <br />0.25-0.50 <br />Easy several inches by thumb <br />MEDIUM STIFF <br />4-8 <br />6-12 <br />5-9 <br />0.50-1.00 <br />Moderate several inches by thumb <br />STIFF <br />8-15 <br />12 - 25 <br />9-19 <br />1.00-2.00 <br />Readily indented by thumb <br />VERY STIFF <br />15 - 30 <br />25 - 65 <br />19 - 31 <br />2.00-4.00 <br />Readily indented by thumbnail <br />HARD <br />> 30 <br />> 65 <br />> 31 <br />> 4.00 <br />Difficult by thumbnail <br />UNIFIED SOIL CLASSIFICATION CHART <br />MAJOR DIVISIONS GROUP SYMBOLS AND TYPICAL NAMES <br />GRAVELS: 50% <br />CLEAN <br />GW <br />Well-graded gravels and gravel-sand mixtures, little or no fines. <br />COARSE- <br />or more <br />GRAVELS <br />GP <br />Poorly-graded gravels and gravel-sand mixtures, little or no fines. <br />GRAINED <br />SOILS: <br />retained on <br />GRAVELS WITH <br />GM <br />Silty gravels, gravel-sand-silt mixtures. <br />More than <br />the No. 4 sieve <br />FINES <br />GC <br />Clayey gravels, gravel-sand-clay mixtures. <br />50% retained <br />CLEAN SANDS <br />SW <br />Well-graded sands and gravelly sands, little or no fines. <br />on No. 200 <br />SANDS: 50% or <br />i <br />SP <br />Poorly-graded sands and gravelly sands, little or no fines. <br />sieve <br />more pass <br />ng <br />the No <br />4 sieve <br />SANDS WITH <br />SM <br />Silty sands, sand-silt mixtures. <br />. <br />FINES <br />SC <br />Clayey sands, sand-clay mixtures. <br />FINE-GRAINED <br />ML <br />Inorganic silts, rock flour, clayey silts. <br />SOILS: <br />LIQUID LIMIT <br />LESS THAN 50 <br />CL <br />Inorganic clays of low to medium plasticity, lean clays. <br />Less than <br />SILT AND CLAY <br />OL <br />Organic silt and organic silty clays of low plasticity. <br />50% retained <br />MH <br />Inorganic silts, clayey silts. <br />on No. 200 <br />LIQUID LIMIT 50 <br />OR GREATER <br />CH <br />Inorganic clays of high plasticity, fat clays. <br />sieve <br />OH <br />Organic clays of medium to high plasticity. <br />HIGHLY ORGANIC SOILS <br />PT <br />Peat, muck, and other highly organic soil. <br />MOISTURE CONTENT <br />STRUCTURE <br />DRY: Absence of moisture, dusty, dry to the touch <br />STRATIFIED: Alternating layers of material or color > 6mm thick. <br />DAMP: Some moisture but leaves no moisture on han <br />d <br />LAMINATED: Alternating layers < 6mm thick. <br />MOIST: Leaves moisture on hand <br />FISSURED: Breaks along definate fracture planes. <br />WET: Visble free water, usually saturated <br />SLICKENSIDED: Striated, polished, or glossy fracture planes. <br />BLOCKY: Cohesive soil that can be broken down into small <br />PLASTICITY DRY STRENGTH DILATANCY TOUGHNESS <br />angular lumps which resist further breakdown. <br />ML Non to Low Non to Low slow to Rapid Low, ca <br />n't roll <br />LENSES: Has small pockets of different soils, note thickness. <br />CL Low to Med. Med. to High None to Slow Medi <br />um <br />MH Med. to High Low to Med. None to Slow Low to Med. <br />HOMOGENEOUS: Same color and appearance throughout. <br />CH Med. to High High to V.High None High <br />LIST OF ABBREVIATION & EXPLANATIONS <br />SPT Standard Penetration Test split barrel sampler G Grab sample <br />D&M Dames and Moore sampler MC Moisture Content <br />LL Atterberg Liquid Limit MD Moisture Density <br />PL Atterberg Plastic Limit UC Unconfined Compressive Strength <br />PP Pocket Penetrometer <br />VS Vane Shear <br />EXPLORATORY KEY <br />anch CAPITAL HILL PUD <br />GINEERING= CAPITAL DRIVE EUGENE, OREGON <br />310 5th Street, Springfield OR 97477 1 p: 541.746.0637 1 www.branchengineering.com <br />PROJECT NO. 14-020 <br />EUGENE, OREGON <br />SEPTEMBER 30, 2016 <br />