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Procedure for the evaluation of liquefaction-induced lateral spreading displacements <br />- <br />Site investigation <br />with SPT or <br />SPT data with <br />content <br />or CPT data <br />Design <br />eanhquake <br />I - <br />Moment magnitude <br />of earthquake (M„) <br />and peak surface <br />acceleration (amaV <br />Ground <br />geometry <br />V <br />Geometric parameters <br />for each of different <br />zones in level (or <br />gently sloping) ground <br />with (or without) a free <br />face <br />¥ <br />Liquefaction potential analysis <br />to calculate FS, (Nikocs or <br />4 + <br />(qcIN)cs Zones with three major Zones with <br />- geometric parameters or more than <br />(using the NCEER SPT-less - free face height (H).three major <br />CPT-based method (Youd et al.the distance to a free face geometric <br />2001))(L), or/and slope (S)parameters <br />If <br />(Ni )rocs < 14 <br />or <br />(qcix)cs< 70 <br />eval uate <br />potential <br />of <br />flow <br />liquefaction <br />W <br />Calculation of the lateral <br />displacement index L/H <br />or/and Evaluation of <br />(using Figure I and Equation [3]) S lateral <br />displacements4 +based on <br />other <br />Estimated lateral displacement, LD approaches <br />and <br />For gently sloping ground without a free face.engineering <br />LD = (S + 0.20) · LDI (for 0.2% <S< 3.5%)judgment <br />For level ground with a free face, <br />LD= 6·(1./H)-" · LDI (for 5<UH<40) <br />1 Flow chart illustrating n·Bjor steps in estirrating liquefadion-induced lateral spreading displacements using the proposed approach <br />60 <br />0,-40% <br />l <br />So9* <br />60% <br />20 <br />80%10 1 <br />0.0 0.5 1.0 1.5 <br />f Zmas <br />LDI= 1 7maxdz <br />i Jo <br />1 Equation [3] <br />2.0 <br />Factor of safety, FS <br />1 Figure 1 <br />1 ·Estirrating liquefaction-induced ground settlenents from CFT for level ground", G Zhang, P. IC Robertson, and R.W. I. Brachnan <br />CUq v. 1.5.1.16 - CFT Uquefaction Assessment Sohare 52 <br />SL Rvcd 2019.01.21