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<br /> CLASSIFICATION OF SOILS FOR ENGINEERING PURPOSES
<br /> ASTM Designatinn: D 2487 - 69 ANO D 2488 - 69 ;
<br /> (Unified Soil Classilication System) '
<br /> I
<br /> + M�jadivisions rympola ;.
<br /> TYP�cal names Classificnion aiteria
<br /> I ,
<br /> � Wel I�reded p r a v e I s end N C�: DEo preater than 4, r
<br /> GW praval-sand mixtures. ��ttle
<br /> .� � or no f�nes ,n � Cz_ ID�oI= �r„ben 1 and 3 i
<br /> ` Y € „ v,�.obo
<br /> d
<br /> �,�N d POorly praded gravels and u � �
<br /> N .� U CiP p�avel•cand mixtures. Irtt�e „
<br /> � 8= o�����e5 N � '� � Not rtwetinp both cr�tei�a lor GK' �; Y
<br /> f � U� � � � C N � G N .
<br /> 'f � �'�, `� GM Silty prsvels. prevri•sand• ` a tU � g Atterberg I�m�ts Delow '
<br /> ) �� �.- silt m�xturas o c� C v '= "A ' I�ne �r P.I, less
<br /> �c � a a AtterpQrp I i m�t t D�ot
<br /> i g � ` .� � � � � � then 4 ti�o i� hOtChfd orea �
<br /> ' ! �' _ 'c ere b��oerime cless�l�•
<br /> •� �_ � � GC Cleyeypravels, gravei• � • • . Anert�erg I�m�ts eGove �at�ons requir�ng use �
<br /> � � � '0 cand•cley m�,ctures �+ : : : � A�� ��^� w�th �.L ��dual symbolg
<br /> K .ti� � o . . , 6�eeter men 7 "
<br /> �
<br /> �� Well•preded sands and gra- � � � : �.�= O6o greater than 6,
<br /> ' � : � � SW velly sands. little or no ;�
<br /> '� finES r. �n 2 . .
<br /> C1� R v � $ n�, a C' Di�x 05G ���n 1 6nd 3 »
<br /> q � d � € - .
<br /> � a N �
<br /> � � _ d Poorly graded sands and � � i �
<br /> m � v+ V SP era�lly �ands. I�nle or nc - Z � �'
<br /> a ,n $� t�nes v v � o Not meetmg both cntene lor SW
<br /> � Z�— O r t � Z
<br /> . � 0 c
<br /> N� N N U N � �
<br /> � �n � ` � S�Ity sands. sand-s it m�x- c - �+tterberg I�m�ts Ceiow
<br /> � � L tures � = �` 1 an 4�ne or P.I. less Anerperg I i m�t s plp�.
<br /> X
<br /> £ ` .- v a � t�ng m hatched area
<br /> � d N J � � are bordeN�ne ctass�f�-
<br /> ?,� �` �� Atterperg I�m�ts above �et�ons reqwnng u�
<br /> � SC °1'eY sands. so��d�clay ••A" line w�m P,I, ol tlual symbols
<br /> m�xtures greater tnan 7
<br /> i
<br /> �' Inorgan�c 6�Its, vrry t�ne PlssUc�ty Chert
<br /> f � ML sands. rock flou�. s�lty or 60
<br /> �,�; clayry I�ne iands
<br /> � � for clnss�l�cat�on of I�ne�gra�ned
<br /> � �e � soils end line Irach<xi ot CodrSe-
<br /> ((�,� � Inorgan�t CIayS ot low to
<br /> � 50 gremed w�ls.
<br /> ,� med�urt, plast�eity. groveily
<br /> �� � � C� tleys, iandy clttys. s,lty Atterperg L�mits plotting m CH
<br /> ! �n E eleys, lean clays �etdirtl nrr.a era Durderl�ne
<br /> I � y� ClafiS�liCJl�Uns ruyu�r�ne U�! ol
<br /> ' x 4U duat yymbols.
<br /> ,) •y � y �
<br /> a Oreenic c i�t c ancl ors�„�nc � [quat�on of A•I�ne
<br /> � _� � �� s�lty cI�V�Of low `.leet�uty r PI �0.�3 ILL-201 I
<br /> r '�Z � 30 I I I I '
<br /> � � a Inorpenic i�lts, m�ca�:�•ous � � j � �.� i i0H Itl MMI
<br /> '� MH or d�etomecuous hne :.,,nd� a • �
<br /> . '" P
<br /> �� y �' or alts, elsstic s��ts 2p
<br /> � � �d I C� �
<br /> � � CH InorpsniC ClayS ul n�qh �� I I �
<br /> � � � P��st�aty, Ist cluy, _
<br /> � - 7
<br /> _ E C L•ML ��;�' ML end Ol �
<br /> N z Oip�niC CI�Vi of nwd�um t� p���
<br /> �, O M h�ph pleruaty � �� 20 3 J 4 U SO 60 70 80 90 tOC
<br /> J
<br /> �� liquid l�m�t
<br /> €�N P� Peet, muck end othrr h�priiy
<br /> Q 3 ��Da^'� �°��• 'Bes�d on the maun�l
<br /> _ $ p�ss�np Ne 3 �n. (76 mml s��ve.
<br /> ���
<br /> � iE�t 170�M
<br /> �.
<br /> ;'r 8b 7� S"'� �k���A , .'
<br /> `i` w, "U a i � ::
<br /> , - �" .���':.: ,�h"'�`M _ s� ..,, ., .�a . , .,.�.,.e.. . .,�. .'a
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