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CPT Interpretations Page 617 <br /> The following parameters are not presented but may be interpreted for use in Iiquefaction analysis Further <br /> detailed interpretation may be completed by using the Liquefaction Spreadsheet following the committee <br /> recommendations of the NCEER This Spreadsheet is available for purchase A promotional document is <br /> presented in the Interpretations directory on the Data Disk with this report <br /> Interpreted Description Equation Ref <br /> Parameter <br /> q" q,normalized for overburden stress used for seismic q`'=q*(Pa/C,;)°S <br /> analysis where Pa=atm Pressure 3 <br /> %is In Mpa <br /> qcin q.%=(qn 1 Papa/Q,') <br /> qk,in dimensionless form used for seismic analysis where Pa=atm Pressure and n ranges from 3 <br /> 0 5 to 0 75 based on Ic <br /> K Equivalent clean sand factor for(Nr)60 K_,,=i+((0 75130).(FC—5)) 10 <br /> KQ„= 10 for 1.S 164 <br /> K,, Equivalent clean sand correction for c6N Kqg=f(Ij for 1.n 164 (see reference) 10 <br /> ckl, Clean sand equivalent q,,,, %rocs=%in•K,# 3 <br /> qcrinm<50 <br /> CRR7z=0 833 I(q�,„41000]+0 05 <br /> CRR Cyclic Resistance Ratty(for Magnitude 7 5) 50:5 C6.<160 10 <br /> CRR73= 93 I(gd,„a110001'+0 08 <br /> • CSR=(C„/D )=0 65(a,,w/g)(aJ 6y)rd <br /> rd=1 0—0 00765 z z 5 915m 10 <br /> CSR Cyclic Stress Ratio rd=1 174—0 0267 z 9 15 <z 5 23m <br /> rd=0 744—0 008 z 23 < z S 30m <br /> rd=0 50 z > 30m <br /> MSF Magnitude Scaling Factor See Reference 10 <br /> FofS Factor of Safety against Liquefaction FS=(CRR,,,/CSR)MSF 10 <br /> Liquefaction Statement indicating possible liquefaction Takes into account FofS and limitations based 6 10 <br /> Status and q j . <br /> React <br /> CPTSUMM-MethodsGV122a—Rev 08-10.2004 <br />