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Laghton Consibng trac <br />Leighton Consulting, Inc. <br />611 Wilshire Blvd., Suite 1404 <br />Los Angeles, CA 90017 <br />http:Uwww.leightongroup.com <br />1/lia/Nill/,0/R LIOUEFACTION ANALYSIS REPORT 4 #..ir*· <br />Project title : The Academy - Orangewood Children's <br />- <br />CPT file : CPT-5 <br />Input parameters and analysis data <br />Location : 1901 North Fairview Street, Santa Ana, CA <br />Analysis method: <br />Fines correction method: <br />Points to test: <br />Earthquake magnitude Mw: <br />Peak ground acceleration: <br />NCEER (1998) <br />NCEER (1998) <br />Based on Ic value <br />6.70 <br />0.38 <br />G.W.T. (in-situ):30.00 ft <br />G.W.T. (earthq.)15.00 n <br />Average results Interval: 3 <br />Ic cut-off value:2.60 <br />Unit weight calculation:Based on SBT <br />Use fill:Yes <br />Fill height 3.0 <br />Fill weight:10C <br />Trans. detect. applied: Yes <br />1% applied: No <br />Clay like behavior <br />0 ft applied:Sands only <br />1.00 It)/W Limit depth applied: Yes <br />Limit depth:50.00 ft <br />Cone r,pa-*9266ER Frictio,?A'AttjRJGER SBTn Plot <br />10-10- <br />15-15- <br />10- <br />15- <br />55- <br />20-20- <br />25-25- <br />30-30- <br />35-35- <br />40-40- <br />45-45- <br />50-50- <br />55-55- <br />60-60- <br />65-65- <br />70- <br />20- <br />25- <br />30- <br />40- <br />45- <br />Depth (ft) <br />50- <br />60- <br />65- <br />70- <br />75- <br />2 3 <br />6 <br />1 1 75-- <br />70- <br />, 757 11/1,1 I,1 <br />CRR plot FS Plot <br />0FIU <br />5-5 <br />10- <br />V 10 <br />15-15 <br />20-20 <br />25-25 <br />1 <br />30-30 <br />35- <br />40-40 <br />45-45 <br />50-50 <br />55-55 <br />60-60 <br />65-65 <br />70-70 <br />75- ,75 <br />2 <br />0 50 100 150 200 0 2 4 6 8 10 1 4 0 0.2 0.4 0.6 0 0.5 1 1.5 <br />qt (tsf)Rf (%)Ic (Robertson 1990)CRR & CSR Factor of safety <br />M.=71/2, sigma'=l atm base curve <br />0.6- ''''I''I'•'1 <br />- Liquefaction <br />Summary of liquefaction potential <br />1.000. I ' '''ll lili <br />7 <br />0.5- <br />0.4- <br />0.3- <br />1 0.2- <br />\U-,1/ <br />9 <br />100= <br />10 <br />1 <br />2 <br />1 1 lilli <br />0.1 1 10 <br />0.1- <br />Nornelized friction ratio (%) <br />0 20 40 60 80 <br />No Liquefaction . <br />I,..1,.,1..,I,,,I.,. <br />100 120 140 160 180 200 <br />Qtn, cs <br />Zone A, Cyclic liquefaction likely depending on size and duration of cyclic loading <br />Zone A2 Cydic liquefactlon and strength loss likely depending on loading and ground <br />geometry <br />Zone B Liquefaction and post-eanhquake strength loss unhkely, check cyclic softering <br />Zone C· Cyclic liquefaction and strength loss possible depending on soil plastic,ty, <br />brittleness/sensitivity, strain to peak undra,ned strength and ground geometry <br />CLiq v. 1.5.1.16 - CFT Liquefaction Assessment Software - Report created on: 11/2/2011, 1:24:23 PM 33 <br />Project file: P:\Leighton Consulting\603000\603284.001 Orangewood\Analyses\orangewood_cpt.clq