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Relative Standard Unco~fned <br />Stiffness Penetration Compressive <br /> Reslstane.~ Strength <br /> (blows/foot) (tsf) <br />Soft 0 to 4 0 to 0.5 <br />F"Lem 4 tO 8 0.5 tO 1 <br />Stiff 8 to 15 1 to 2 <br />Hard 1.5 to 30 2 to 4 <br />Very Hard over 30 over 4 <br /> <br />:~!:~;!;a!/;!/;!!;::CRITERIA FOR:DF~CRiBI~ g;::':i.i;i :i ::!.:~ <br />~:~..~.....,~.. : .......... ,,, ,:,,. · ...... <br /> <br /> A~fiw St~d~d Pene~afion <br /> De~ <br /> ~1o~ ~r f~t) <br /> Vt~ l~se 0 to 4 <br /> ~e 4 to 10 <br /> Med. De~¢ 10 to ~ <br /> Dele ~ to ~ <br /> Ve~ dele owr 50 <br /> <br />Description CHteria <br />Dry Absence of moisture, dusty, dry to the touch. <br />Damp Some moiarure apparent. <br />Moist Obvious moisture, but no visible water. <br />Wet V'~'ble free water, usually soil ia below water table. <br /> <br />Description Criteria <br />Nonplastic ...... A 1/8-i~. (~mm!. ,thread camaot be rolled at a~y water contant. <br />Low The thread is easy to roll and mot much time is req~-ired to reach the <br /> plastic limit. The tkread c. aamot be formed when drier than the plastic <br />Medium The thread ia easy to roll and not much 6me ia required to reach tee <br /> plastic limit. The thread cannot be rerollcd after reaching the plastic <br /> limit. The lu.mp crumbles when drier than the plastic l~mlt. <br />High It takes conslderable time rolling and kneading to reach the plaztic <br /> limit. The thread can be rerolled several times after reaching the <br /> plastic limit. The lump can be formed with out ca'xtmbllng when drier <br /> than the plastic limit. <br /> <br /> <br />