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S •
<br /> , Well-graded gravel and Terms Describing Relative Density and Consistency
<br /> E -gogo,GW gravel with sand,little to Density SPT(2)blows/foot
<br /> m C. q no fines Very Loose 0 to 4
<br /> m t G-',.,s,� Coarse-
<br /> a, m , �000o Loose 4to10
<br /> Poorly-graded gravel Grained Soils
<br /> c�°' vo00000 GP Medium Dense 10to30 Test Symbols
<br /> and gravel with sand,
<br /> co 5 0000o Dense 30 to 50
<br /> little to no fines Very Dense >50 G=Grain Size
<br /> N o z C0 00 M=Moisture Content
<br /> d ,� o 0 0" 0 Consistency SPT1�lblows/foot A=Atterberg Limits
<br /> Z0 N op Silty gravel and silty Very Soft 0 to 2 C=Chemical
<br /> o u 0 0 0 GM gravel with sand Fine- Soft 2 to 4 DD=Dry Density
<br /> o f i J o Grained Soils Medium Stiff 4 to 8 K=Permeability
<br /> • M Nr.„ Stiff 8 to 15
<br /> N . Clayey gravel and Very Stiff 15 to 30
<br /> nu . GC
<br /> ., clayey gravel with sand Hard >30
<br /> 0Component Definitions
<br /> r o Well-graded sand and Descriptive Term Size Range and Sieve Number
<br /> L. sw sand with gravel,little Boulders Larger than 12"
<br /> `° ..:•:.:•:<:. to no fines3"
<br /> � � �..•••••,•• Cobbles to 12"
<br /> Gravel 3"to No.4(4.75 mm)
<br /> Fr) Poorly-graded sand o o - NA y g Coarse Gravel 3'to 3/4"
<br /> co U — SP and sand with gravel, Fine Gravel 3/4"to No.4(4.75 mm)
<br /> • o v little to no fines
<br /> c � d Sand No.4(4.75 mm)to No.200(0.075 mm)
<br /> .i, Z
<br /> O
<br /> 0 2 N Coarse Sand No.4(4.75 mm)to No.10(2.00 mm)
<br /> Silty sand and Medium Sand No.10(2.00 mm)to No.40(0.425 mm)
<br /> y ° N"i SM silty sand with Fine Sand No.40(0.425 mm)to No.200(0.075 mm)
<br /> o o i gravel Silt and ClaySmaller than No.200(0.075
<br /> � mm)
<br /> o
<br /> 13 .- - Sc Clayey sand and (3)Estimated Percentage Moisture Content
<br /> in clayey sand with gravel Component Percentage by Weight Dry-Absence of moisture,
<br /> t� Trace <5 dusty,dry to the touch
<br /> Slightly Moist-Perceptible
<br /> Silt,sandy silt,gravelly silt, moisture
<br /> > 0 ML silt with sand or gravel Some 5 to<12 Moist Damp but no visible
<br /> o C
<br /> in cn w Modifier 12 to<30 water
<br /> o f° N j Clay of low to medium (silty,sandy,gravelly) Very Moist Water visible but
<br /> Z °; j CL plasticity;silty,sandy,or 0 CO
<br /> not free draining
<br /> 16 ' j gravelly clay, lean clay Very modifier 30 to<50 Wet-Visible free water,usually
<br /> oy. (silty,sandy,gravelly) from below water table
<br /> a _ = Organic clay or silt of low Symbols
<br /> 2 __, _ OL plasticity Blows/6"or
<br /> o _— Sampler portion of 6"
<br /> _ _ _ Cement grout
<br /> ° Elastic silt,clayey silt,silt Type N / > surface seal
<br /> with micaceous or 2.0"OD Sampler Type
<br /> e / s Description Bentonite
<br /> o P. MH Split-Spoon A. (4) seal
<br /> o diatomaceous fine sand or Sampler 3.0"OD Split-Spoon Sam ler
<br /> 0 N silt t� P ..'`.Filter pack with
<br /> o o / (SPT) ' 3.25"OD Split-Spoon Ring Sampler (4) _ :::blank casing
<br /> co o Clay of high plasticity,
<br /> a �' sandyor gravellyclay,fat Bulk sample I �.__•::section
<br /> m 2= / CH 3.0"OD Thin-Wall Tube Sampler =,'.-,Screened casing
<br /> J / clay with sand or gravel 0 (including Shelby tube) or H droti
<br /> � Grab Sample • r with filter pack
<br /> rn d v7 2 ijji�j% V ..••••End cap
<br /> s 2 g '; i% Organic clay or silt of © Portion not recovered
<br /> a " i�/ OH medium to high (t) Percentage by dry weight t4) Depth of ground water
<br /> ,i;;% plasticity 12) P
<br /> E, �i,i, (SPT)Standard Penetration Test Y. AID=At time of drilling
<br /> N M (ASTM D-1586) Static water level date
<br /> r•- ,., Peat,muck and other (3) In General Accordance with ( )
<br /> m a o PT highly organic soils Standard Practice for Description (5) Combined USCS symbols used for
<br /> F =O and Identification of Soils(ASTM D-2488) fines between 5%and 12%
<br /> D
<br /> Classifications of soils in this report are based on visual field and/or laboratory observations,which include density/consistency,moisture condition,grain size,and
<br /> plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein.Visual-manual and/or laboratory classification
<br /> 3 methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Soil Classification System.
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<br /> associated'?, 00100.),
<br /> earth sciences EXPLORATION LOG KEY FIGURE Al
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