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or <br />Effective Vertical Stress, VS, ', iPore water oressure <br />Overburden Correction factor, CN= <br />( p <br />al — <br />Ve <br />w 'tti "NI limilted to valUes < 46 for LlSe in this expression <br />I k — <br />1.338-0.249tit A 0.264 <br />< 1.7 <br />CN <br />SPT corrected for 60% & I atm, (Ni )60 = <br />9.7 15.77,)2) <br />A(Nj)()0 =C-xp (1.63 -1- <br />FC + 0.0 1 FC+(Jli)ij <br />AN -Fines <br />AT 6ocs ATI ) (,fy A (.-V71)6i) <br />(N1-60)CS = <br />Stress Reduction Coefficient, rd = <br />ce(Z —1 .012 — 1.126 as rl 3 J <br />#(z) 0.1106 11 0.1 IS sin (T z 2-8 +5J42) <br />LiquefactionSPT Equations Page 2 of 4 <br />