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ÊARTH SYSTEMS PACIFIC <br />48511 Warm Spr¡ngs Blvd,, Suite 210 <br />Fremont, CA 94539 <br />(510) 3s3-3833 <br />www.earthsystems.com <br />Project t¡tle : 353 Ma¡n Street Apartnents (SH-13131-SA) <br />CPT file : CPT-CI <br />Input parameters and analysis data <br />Locat¡on r 353 Main Street, Redwood City, CA <br />Analys¡s method: <br />Fines corect¡on method : <br />Polnts to test: <br />Earthquake magnitude Mw: <br />Peak ground accelerat¡on: <br />NCEER (1998) <br />NCEER (1998) <br />Based on Ic value <br />8.05 <br />0.60 <br />Use fill: No <br />F¡ll height: N/A <br />Fill we¡ght: N/A <br />Trans. detect. applied: Yes <br />Ç applied: Yes <br />CRR plot <br />Clay Iike behavior <br />applied: Sands only <br />Limit depth applied: No <br />Limit depth: N/A <br />MSF method: Method based <br />ES Pbt <br />G.W.T. (in-situ): 13.00 ft <br />G.W.T. (earthq.): 5.00 ft <br />Average results interval: 3 <br />Ic cut-off value: 2.60 <br />Un¡t weight calculation: Based on SBT <br />SEIh PlotCone reritance Fktion Ratio <br />2ü1 <br />Ë <br />CLoo <br />45 <br />5tl <br />60 <br />65 <br />70 <br />10 <br />m <br />â <br />30 <br />35 <br />40 <br />45 <br />Íl <br />55 <br />60 <br />65 <br />m <br />15 <br />2u <br />25 <br />30 <br />40 <br />45 <br />5{l <br />Éú <br />65 <br />m <br />s <br />É0 <br />6 <br />m <br />oI <br />f, <br />Ø'6 <br />(U <br />L <br />"t <br />1oo <br />r!bo <br />oo- <br />horl <br />oN <br />{E <br />ELoz. <br />10 <br />15 <br />20 <br />25 <br />30 <br />35 <br />40 <br />45 <br />5t] <br />6u <br />65 <br />70 <br />0 <br />qt (Ef) Rf (o/o) <br />Mw=Jtl2, s¡gma'=1 atm bâse curve <br />0 0.2 0.4 0.6 0 tì5 1 l.s 2 <br />CRR & CSR Factor of safety <br />Summary of liquefaction potential <br />1,ün <br />u,1 1 1û <br />Normalized friction ratio (o/o) <br />Zone A1: Cycl¡c l¡quefactron likely depending on size and duralion of cycl¡c loading <br />Zone A2: Cycljc liquefaction and strcnglh lo$ likely depend¡ng on loading and ground <br />geometry <br />Zone B: Lquefact¡on and poslearthquake strength loss unlikely, check cyctic sofren¡ng <br />Zone C: Cyclic liquefaction and strength loss possible depend¡ng on so¡l plast¡c¡ty, <br />britllenes/sensìtivity, stra¡n to peak undrained strength and ground geometry <br />400lJ246 <br />Ic (Robertson 1990) <br />0.8 <br />o.7 <br />:- ou <br />Y. <br />t',J¿ 05 <br />; <br />tf ol <br />1) <br />D o.¡ <br />¿J) <br />o,2 <br />0.1 <br />60 t] 100 1a 14û 160 ßO nO <br />Qt'r,cs <br />: <br />[,,1;.rr i,,., .,at r',,¡-, <br />Liquefact¡on It <br />lb Liquefaction <br />CL¡q v.2.0.6.97 - CPT Liquefaction Assessment Software - RepoÊ created on: 41412018, 2:52: 1 1 PM <br />Project f¡le: S:\FREMONT FILE FOLDERSUndividual Folders\Girmay\Projects\2016\353 Main Street\3s3 Main Street - Updated.clq <br />7.B. - Page 108