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� utv�FtED SO1L CLASSIFICATION SYSTEM <br /> GROUP Nau�[E GROUP SOIL DESCRIPTION <br /> Commencs <br /> SYMBOL <br /> p� � � Hi�hly or�anic soiis <br /> Far Clay ► CH Clay-Liquid limit> 50°'0 ' S0°'o or more �s <br /> Plasric Sih ; MH Silt- Liquid limit> j0°% ' smatler;iian <br /> Lean Clay CL Clay- Li uid (iirtit< S �� ' <br /> q � ° ' Vo. �00 sieve <br /> � Sih I :�(I. � S+IL- Liquid Iimii<�0°'� ` I <br /> �iIN Clay -. � CL-ML Siltv Clav ' I <br /> Clayey Sand I SC ; Sands wirh l= to :0 percent � <br /> ; Siltv Sand ' Syt i sma!]er chan �Jo. ?00 sieve ' ; . <br /> Pooriv-gadcd Sand wtch Ciav SP-SC � <br /> Pooriy-�aded Sand wich Silt � SP-Svt � Sands with � co '.= erc�nc � �ore �� y�'°,•� :s <br /> P IarQer;han <br /> : �4ei1-�aded Sand w�th Clay == SW-SC ; smaller zhan �o. =00 sie�e = ' vo. _flp �i�,:z �c <br /> � Weil-�-aded•Sand with Silt "' SW'-Svt � ' °�o sand� °.� ,;.�-ave: <br /> Poorfy-�aded Sand � SP ; Sands widi iess chan � percent i <br /> i Well-�aded Sand"� 1 SW smaller than vo. '00 sie��e ` I . . <br /> ( Clayey Gravel GC ; GraveIs wicf� l= *o �0 �erc�nc i <br /> ` Silty Gravd , G�1 i smalle�than No. :00 sie�e ' � <br /> : Pooriv-arad�d Grave! wicfi C:ay GP-GC i �+tor� 'han :0°, ;; <br /> ?oorly-�aded Grave! wiLh Si{i i:rP-Gy1 � Grave!s with .: �o ;= perce�t ' ;ar�er-nan <br /> `Nell-�raded�ravei �.vich Cia� " v W�-GC smalIer rnan vo. :00 s�e�:� = vo. =00 s�z��� ;rc <br /> ' �L�zll-�aderi Gra�ei �.yith �iii *' v�L�-v�l . o, <br /> o�ve! � °�<, sar,c <br /> ?ooriy Gradea Grave: �1r � Grave!s witn iess :nan : ��rc_n: , <br /> `Nell-�aded Gravei " GW' , ;mall�r:han �o. =00 sie�e ' � <br /> ' Sr� P!asacicy Chan ror derinition or�ilrs and cia��s. <br /> '� Sr_definition �or weil graaed. <br /> LEGEND QF TERMS <br /> SA�ti1PC.E [DE�1TIFiC:�T1QN <br /> PLASTICITY CHART (.� - Undisturoed(sheib� ntbej <br /> b1� S - Spli�barrel/SPT(diszurbe�l <br /> • � C - Caiiiornia Samoier <br /> .�, L - Lask�• continous samplcr <br /> " � .� - .-�u2er cuRin:s (sack samaie) <br /> CL= or•OH B - Buli: sample (au�er curnn=si <br /> =o I H - Head soace ;ampie <br /> � � CONStSTE�CY OF EOf-IESIVE SO(L� <br /> �o � ��ncontined Como.�tren�h. �u. �s�� <br /> �L �tIN or.OH �=00 Ve;-y Sor <br /> or �00-1Q00 Sofr <br /> '� I 1000-_000 �tedium stii: �.r=:r--z: . <br /> �000—t000 Stir� <br /> �� � <br /> 1000-3000 ��er: sti� <br /> �:..,,,i� <br /> ��(i or OL � >3000 Hard <br /> ,, REL-�TI�'E DE�tSITY" OF GRa�C:L.�R �OIL� <br /> ` - bfew-s �er foot <br /> 0 �4 :0 30 :C �0 60 � ?0 30 a0 I OG 0-� �zrv loose <br /> Liauid �imiz �-9 Loosz <br /> l0-_9 �iedium Densz <br /> 30--i9 Dense <br /> �0-80 �'er�• Dense <br /> ALLIED TES.T CLASS{FICATI�N CRITERlA FOR SANDS AND GRAVELS <br /> DRlLL1NG w�zl1�raded sands (SW) C,= D�;'D,o >_ 6 and C:=(D;,,)=�(D�o � p,w) <_; and>_ I <br /> COMPANY �``�=ll �raded �ravels (GW) C�= D�/D,o >_t and C�=(D;o)"'(D,�x D�) <_ 3 and >_ ! <br /> Coarse Fine Coarse ��tedium Fine FIyES <br /> Boulde:�s Cobbies ; �-,�ve( i Gcavel Sand Sand $and {silt or cla��) <br /> Sieve sizes (0" ;" ;/4" � =10 T:10 =�00 <br />