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Descriptive Terminology of Soil
<br />Standard D 2487 - 00
<br />Classification of Soils for Engineering Purposes
<br />(Unified Soil Classification System)
<br />Criteria ior Assigning Group .Symbols and
<br />Group Names Using Laboratory Tests
<br />C
<br />GroupT
<br />Syrnhol
<br />roup NOOW
<br />vtt6
<br />o
<br />in T.
<br />Gra'4 Clean Gravels C, 0. 4 8r114 1,„0, 3
<br />re than 52%
<br />Sat, nr ress Fines 1' < 4 andior > 3 GP
<br />coarse oacrogr
<br />refrained or Gravels with Fines ! rInes cl'assf), as MIo Mfi
<br />No 4 sieve Mre than 1 2'A Ones ' Fines Ctasstty as CI_ or CH GC
<br />Sands Clean Sands! 6 and 1 ts11, C „,3' SW
<br />50% pi more Cl Ot le.SS 'fDlet5 C att 6 andror 1 air (7 ar E SP
<br />-c
<br />coarse 1140100
<br />Sands with Fines Fines elasstfy oo, MT or MH SM
<br />passes
<br />NO 4 sieve More Dan 12% Fines classify as Or CH
<br />Uts arld Clays
<br />Liquid +Arta
<br />less than
<br />Silts and clays
<br />t...icruici nrkl
<br />50 or nactre
<br />Highly Organi
<br />7 and plots 0P7 Or above "A; PVIE
<br />-4: 4 or plots below "A* lin&
<br />L quid limit , oven dried
<br />Ct 75
<br />Liquid omit - not dried
<br />Pr plials on or above 'A' rare
<br />PI plots Perow 'AOne
<br />Liquid land 001111 dr,ed
<br />e 0 75
<br />nol dried
<br />Primarily organic, r Iter. raaok in color and organic- od
<br />Morgan or
<br />Olga rue
<br />Inorganic
<br />Or g n
<br />• Bobo:00111'6e Inalcsnal naFsag t we San ,SSrun. s'fase
<br />sampty ,zot,:yylee 0, 0' trascnv,,,,.., as Dog ads! watn Ont0Se.91 ,Gunief'S Ea bath kr, Trsar, name
<br />Dtt„ C,
<br />x
<br />ri 0010 toonott1 014i Ana sand at:11 0 sask"S 'jaws, same
<br />Gravel$ kain 6 to t 2% noes requ,01
<br />CSW,G1‘1 101 aded ',Tasks
<br />0)114,17:13 grave' ,3,1,1 ar,a10
<br />GFCCW, sockly tartatirat grrktart wan Sia
<br />CP-CD clXVty prar.red tar a010 won Day
<br />rt knots 1ar0ftts, CL -MS sSe dna' Syentan C;C.GM CV SC 31,1
<br />g41nnen aretnagen,c 111' trntro or:getter rotes to grotsprarner
<br />• '70,1t03n01 0 IS% roastat add wIth gaws' to group norna.
<br />Sanas <14' 5 0 I atatt1 &lune tsanbaks
<br />SW 0%1 we agradect sand' veto a%
<br />SattArttSra t.vettrrytarrkta aorta .0tot otaa.
<br />'(1 SM rattOtriy arlocr 1<ri.p
<br />SP SS sonny 4c,0133 saw al Aran n'ke
<br />Akeilkeq) Imes ;SO ,n tratontott area sat% 0 a CtM 151'ne nkly
<br />k If sot r,rrontarns IC to 2A% r:44;L'a NO 23G add krot 0000 ot "oats wawa' wtockte,o wtotottomotam
<br />r1004rnOntad,S3Art431uS tin 22k) rty adartantraki Sand ado ' stormy to 0/04 name.
<br />n1 Oka% cortattarattatta' 20%. kluk Ncr ZOO ett crrnaltny erktver artkt 'grarsolist ioratoppnarap
<br />ar1 4 44 4 WC" i1k1k, On .0, rats:rue 'A' 'Ine.
<br />Pr <4 or plots tterc,a A foto
<br />Itt Pl tapirs go no atkraos, Cane
<br />g 14 1 bert14' A 00
<br />50
<br />50
<br />x
<br />C 30
<br />.a"
<br />0
<br />10
<br />7
<br />4
<br />DD
<br />WO
<br />MC
<br />Lt.
<br />PL
<br />PI
<br />P200
<br />0
<br />CL
<br />MI
<br />OL
<br />OL
<br />1-1
<br />11
<br />OH
<br />PT
<br />30 40 50 60 70 80 90 100 110
<br />Dry denStry per
<br />V,‘e.r density. pc
<br />Natural n(101141ure content.
<br />Lidraid ni a
<br />Plasoc 1121/
<br />PlastiCIO
<br />DaSSRng 200 sieve
<br />Liquid Limit (LL)
<br />Laboratory Tests
<br />oC
<br />SG
<br />0
<br />Re
<br />oe
<br />Organic. content %
<br />Percent Ot saturation "p
<br />Specific gravity
<br />Catteson pst
<br />Apgre of Internal IrtT,on
<br />UnConfned compresshee strength. psf
<br />Pocitel penetrometer .strength, 1st
<br />'Or/ell-Tarter/ gravel'
<br />Pocp y graded graver
<br />GM . SOP gLavei
<br />Clay_ey gravel
<br />'Nell -graded sand '
<br />Poorly graded sand
<br />51104. s.and
<br />layey sand
<br />Lean clay
<br />Silt ' '7
<br />4Organic., clay
<br />Organic silt
<br />Fat claL '
<br />. Elasfic strt
<br />Organtc clay
<br />jrganic silt
<br />Particle Size Identification
<br />13cuirJers . over- 12"
<br />Co0hIe 3 011 t2.7
<br />Gravel
<br />Coal' Se . „ 374 to 3"
<br />Fine No 4 tor 311"
<br />Sand
<br />Coarse
<br />Mel um
<br />Ene'r
<br />5.41
<br />Clay
<br />. No 4 to No 10
<br />No 10 lo Nn40
<br />No 40 to No 200
<br />No, 200 El< 4 or
<br />below 'A' rine
<br />< No 200. PI ',;e. 4 and
<br />on or above "A' line
<br />Relative Density of
<br />Cohesionless Soils
<br />Very loose
<br />L pose
<br />Medium dense
<br />Dense
<br />Ve.ry dense
<br />0' to 4 BF*
<br />5 to 10 BPF.
<br />to 30 BPE
<br />31 to 50 BF+
<br />over. 50 OK
<br />Consistency of Cohesive Soils
<br />Very soft
<br />Soft
<br />Ratner spry
<br />Medium
<br />Rather sl11
<br />Stiff
<br />Very stiff „
<br />Hard
<br />1 SPE
<br />2 to 3 SPE
<br />4 to 5 BEE
<br />5. to 8 BEE
<br />9 to 12 BPF
<br />13 To 1E; SPE
<br />117 10 3.0 BPF
<br />raver :30 BPE
<br />Drilling Notes
<br />Standard penetration test borings were ,advance,d D'y 3 1t4 Or 6 1(4'
<br />00) 04000va-,51enrr Unles noted otherwise Jet:trig water' was used
<br />to clean out auger pnor to sampling only where indactaled or logs.
<br />Standard penetration test borings, are designated by the prefix, 'ST'
<br />(S.por Tubet All samples were taken with the standard 2' OD spl4Tube
<br />samprer exCeoi where nOted
<br />POW,' aUger bonngs were advanced by 4' or 6' diameter- corginuouS-
<br />'flight sprint- stem ,atigers Soil classifications and strata, depths were
<br />ter r ed from disturbed samples augered to the sodaee and are. therefore,
<br />somewnal approxrmate Power auger borrogs, are designated by the
<br />prefix "B
<br />cand ,?,111ger bonngs were advanced manually with a 1 1/2' pr 3 1(4"
<br />diameter auger and were limited to The depth Pont which the auger 001411
<br />be mant„raNy withdrawn Hand auger bonngs are atdictated by the prefix
<br />BPF: Numbers indicate blows per toot recorded in standard penetration,
<br />test also known as 'N.' value, The sampler was set O,'4o undisturbed
<br />sort below, the hollow -stem auger ()flaring resistances were then counted
<br />tor settorrd and Zhxrd 14 morebrrentS and added to gel BPF Wnere they
<br />dffered signrfroantly, they are reported in the. %loving (aint. 2(12 for The
<br />sedond a.nd )ord 6 roc r ements. re.spectivety
<br />WH, 10)31. incboales the sampler penetrated soil under weigh! riif hanirner
<br />and rods alone dnrang not parquireo
<br />WR*. ardiopes the sarnptet penerraieu soo under werght of r000.
<br />alone ha Mme r vieght and ortytng net. requtred
<br />T'Vri indicates thrn,warled (unritstutkted) tube samPte
<br />AlNol tests, wf.,' d run In gene(ai apr.:pruanr:e w 14 appacanie AS OM
<br />standards,
<br />Res 7022
<br />
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