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CPT Interpretabons Page W <br />' Interpreted <br /> Description Equation Ref <br /> Parameter <br />' a)fused an Schmertrriann s method Involving a <br /> plot of S la/(S„/av)Nc and OCR S <br /> OCR Over Consolidation Ratio <br /> where the Su/p ratio for NO clay is user <br /> selectable <br /> State The state parameter is used to describe whether a sod is <br /> contractive(SP Is posdnne)or dilative(SP is negative)at See reference <br /> Parameter <br />' large stratus based on the work by Been and Jefferies --- <br /> Es/qt Intermediate,parameter for calculating Youngs Modulus, Based on Figure 5 59 in the reference 5 <br />' E,in sands It is the Y abs of the reference chart. . <br />' Youngs Modulus based on the work by Bald There are <br /> three types of sands considered in this technique The Mean normal stress is evaluated from <br /> user selects the appropriate type for the ske from <br /> a)00 Sands 6. =3 +Qr+4.� <br />' Youngs b)Aged NO Sands 5 <br /> Modulus E c)Recent NO Sands where aY=vertical effective stress <br /> a„=horizontal effective stress <br /> Each sand type has a family of curves that depend on <br /> mean normal stress The program Mates mean and ch= Ko'a, with Ko assumed to be 0 5 <br />' normal Stress and lirnearly interpolates between the two -_ '-T---•--- --.-'^`4 - - <br /> extremes provided in tial+�'ss chart <br /> qai 4 normalized for overburden stress used for seismic CIC'=4 (Pal(lv 3 <br /> analysis _ where Pao atm Pressure - -- <br /> ql is in Mpa <br /> gr7n qc,n=(qcl/Pa)(Pa/M) <br />' --- - q,.,in dimensionless form used for seismic analysis � where Pa-atm Pressure and n ranges from 3 <br /> 0 5 to 0 75 based an lc <br /> KsNm Equivalent clean sand tactor for(N,)60 Ksrr=J+((0 75!30) '(FC-5}) 10 <br />' --- --- -- -- �..�. _-- -- --~- lC,pr=10 for 1.20 64 <br /> KrFT Equivalent dean sand correction for qc,N Kq,-I(lc)fpr k>164 (see referenw) 10 <br /> ge,nn Clean sand equivalent q�,„ gzrn =gvin 'Kqx 3 <br /> CRRrs=0833 j(ge,nce/1000]+005 <br /> CRR Cydic Resistance Ratio(for Magnitude 7 5) 50 S q.,.<160 10 <br /> CRRrs= 93((qG rnd1000]'+008 <br /> - --- ---- <br /> CSR=(,6WM)=0 65(a„mi„/g)(MI cW)ru <br />' rd=1 0-0 00765 z z s 915m 10 <br /> CSR Cyclic Stress Ratio rd-1 174-0 0267 z 915 <z <23m <br /> r„-0 744-0 008 z 23 < z s 30m <br /> rd=050 z > 30m <br /> . GREGG <br />' CPTSUMM-MethodsGV122a-Rey 08-10-2004 <br /> I <br />