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Descriptive Terminology Rev 10104 * Standard D 2487-00 Particle Size Iderllffication Classification of Soils for Engineering Purposes Boulders _ over 12' H1 (Unified Soil Classification System) Cobbles-.,_ 3'to t2° Gravel Coarse.. .3/4'to 3' Fine -.No 4 to 3/4' Criteria for Assigning Group Symbols and Sons Classification Sant Group Names Using Laboratory Tests° Group Coarse _ ,. . ....-. No-4 10 No 10 Symbol Group Name° Medium No.10 to No.40 c Gravels° Clean Gravels C.Z 4 and 1: C°< 3 c GW Well-graded gravel° Sill _ No.40 Na. to o.200 or t^on More then 50/°of Less than 5%fines° C°C 4 and/or 1>C>3° GP Poor rased ravels coarse traction Poorly 9 9 below i4'lin► v Al retained on Gravels with Fines Fines classifyas ML or MH GM Silly ravel d'a Clay--•• •• - - - .<No.200,PI Z4 and 110'S m No.4 sieve More Than 12%fines° Fines class as CL or CNGC Cla a suet°1 a on or above"A'One Clean Sands C°.e 6 and t S C. :3 c SW Weil-graded sand n Relative enS$y of oa or more of Less than 5°!°fates' C 6 and/or t>Cc>3 c SP Poorly graded sand° Cohesionlew Soils a Co--- coarse fraction U m passes Sands with Fines Fines classify as ML of MH SM Silty sand's° Veryloose.. ., 0 to 4 BPF No.4 sieve More than 12%' Fines classify as CL or CH SC Clayey sand tab Loose.--, . 5 to 10 BPF t P1>7 and plots on or above lino I CL Lean da "'" Medium dense 11 to 30 BPF a- Silts and Clays Inorganic Dense 31 to 50 BPF S m m Liquid fimil PI<4 or plots below"A"One' ML Sit!"''" Very dense. ry _ _._over 50 BPF CL w less than 50 Organic Liquid limit-oven dried < 075 OL Organic clay m n Liquid limit-not dried OL organic sill"'m° Consistency of Cohesive Soils S N PI plots on or above-A-fine CH s I w q,E d Sifts and clays Inorganic Fal cls Very sell 0 to 1 BPF `o z Liquid limit PI plots below'A*line MH ElaslicsiR"m Soft 2 to 3 BPF i'i c 50 of more Organic Liquid limit-oven dried < 0 75 OH Organic day ""n Rather soli 4 to 5 BPF Liquid limit-not dried Or snit silt`'m q Medium ... 6 to 8 BPF Highly Organic Sofia Primarily organic matter,dark In color and organic odor PT Peat Rather stili 9 to 12 BPF Stilt ... ... . _ . 13 to 16 8PF a Based on the material passing the 3-In(75mm)sieve Very stiff . .. 17 to 30 BPF I It Reid sample contained cobbles or boulders or both odd'with cobbles or boulders or both to group name Hard over 30 BPF C C. = DWI Dr, Cr=(D.? or,x DfA d Itsoil contains 215'1°sand add'mlh send*fo group name o Gravels with 5 to 12;*totes require dual symbols: GW-GM wall-graded gravel wih sill GWGC well-graded grovel with clay Drilling Notes GP-GM poorly graded gravel with sill Standard penetration test borings were advanced by 3U'or 6G-IC Goner poorly graded gravel will day hollow-stern augers unless noted otherwise,,belting water was used IL I Hones sassily otgoni,add'use dual is linsyrntes' to group or namSC-e clean out auger prior to sampling only where inill6aled on logs_Standard g It Rites are ins>-I,add v 1,organic Ines to group name nelration(est borings Ig y p (Split ) h. II sob contains Z75%gravel,add•with gravel'fo group name pe I"19S are designated b the prefix"ST' S d Tube I sands with 5 to 12%ores require dual symbols. AN samples were taken with the standard 2'OD spat-lube sampler.ex- SWSM well-graded sand with sill cept where noted SW SC woa-graded sand will day SP-SIA poorly graded sand with sill Power auger borings were advanced by 4'or 6'diameter continuous- SP-SC poorly graded sand with clay night.solid-stem augers.Soil classifications and strata depths were In- 11 Aaerbarg limbs plot In hatched wren,soil is a CL-ML,silty day tarred from disturbed samples sugared to the surface and are,therefore, k 11 sob contains 15 to 20%plus No.200 add'with sand'or'woh graver whichever is predominant somewhat approximate Power au r I II soil contains 2 30%plus No 200,predominantly sand.add*sandy'to group name ger borings are designated by the M R soli contains 2 30% plus No 200 predominantly gravel add'gravW to group name prefix'S" n Pt 2 4 and plots on or above-A-line o PI<4 or plots below A'one Hand auger borings were advanced manually with a 1"or 30'dtam- p PI plots on or above'A'rrno eter auger and were limited to the depth from which the auger could be C1 PI plots belw"'A'fine manuallywithdrawn Hand auger bmirngsare indicated bythe prefbc'H' 9D BPF:Numbers indicate blows per fool recorded in standard penetration 50 test,also(mown as'N'value The sampler was set Virile,undisturbed soil below the hollow-slem auger.Driving resistances ware then counted �p for second and third 6'increments and added to get BPF Where they ^ 40 •� differed significantly,/hey are reported in the following form 2/12 for the 0L d second and third 6"increments.respectively. m 3D WH:WH Indicates the sampler penetrated soil underweight of hammer C and rods alone;driving not required. i y+. WR: WR indicates the sampler penetrated son under weight of rods 20 alone;hammer weight and driving not required �' G�'0 MH r OH TW indicates thin-waned(undisturbed)tube sample I- 10 - Z_ 7MH Or OH Node: All tests were run in general accordance with applicable ASTM 4 " standards 0 0 10 16 20 30 40 50 60 70 00 90 100 110 Liquid Limit(LL) Laboratory Tests iDD Dry density,pcf OC Organic conlent.% WD Wet density.pd S Percent of saturation.% MC Natural moisture content. % SG Speciflcgravlly LL Ligtuid Omit% C Cohesion,psi PLPlastic limit.% 0 Angle of internal friction B R A V N Pi Plasticity index.% qu Unconfined compressive strength,psi P200o %passing 200 sieve qp Pocket penetrometer strength,tsf I N TE RT EC 52