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Laghton Consulti,lg Inc <br />Leighton Consulting, Inc. <br />611 Wilshire Blvd., Suite 1404 <br />Los Angeles, CA 90017 <br />http:Uwww.leightongroup.com <br />LIOUEFACTION ANALYSIS REPORT -7„'78107354, <br />-. Ap . <br />Project title : The Academy - Orangewood Children's <br />CPT file : CPT-3 <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 ft <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:10[ <br />Trans. detect. applied: Yes <br />K, applied: No <br />, Clay like behavior <br />0 ft applied:Sands only <br />1.00 lb/fe Limit depth applied: Yes <br />Limit depth:50.00 ft <br />Cone r,&*268ER Frictio#A|tjRJGE R SBTn Plot CRR plot FS Plot <br />10- <br />15- <br />10- <br />15- <br />20- <br />25- <br />20- <br />25-L <br />30-30- <br />35-35- <br />£ 40_40- <br />0FIU <br />10 5-5 <br />15 t- 10-V 10 <br />20 <br />»,ng earthq <br />15- <br />L <br />15 <br />A <br />25 j- 20-20 <br />30 25-25 <br />30-30 <br />35 <br />35 <br />40 <br />40-40 <br />45 <br />45 <br />50 <br />50-50 <br />55 <br />55-55 <br />60 <br />60-60 <br />65 65 <br />70 70-70 <br />75 1- i ,, c , 1 75-75 <br />2 <br />50- <br />55-55- <br />60-60- <br />65- <br />70- <br />75- <br />0 50 100 150 0 2 4 6 8 10 1 2 3 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 />Mw=71/2, sigma'=l atm base curve Summary of liquefaction potential <br />0.6- ''1111'111,1,1,1 000 1 1 1111 11. 1 1 <br />Liquefaction <br />0.5- <br />0.4- <br />0.3- <br />j <br />0.2- <br />0.1- <br />1 lilli <br />7 I <br />9 <br />100= <br />%25 <br />10 <br />4 <br />1 <br />1 <br />0.1 1 10 <br />Nornalized friction ratio (%) <br />No Uquefaction - <br />0 •i•I111I111I,•,I•,1I•11I1••I1i•I••1I11• <br />0 20 40 60 80 100 120 140 160 180 200 <br />Qtn,cs <br />Zone A,: Cyclic liquefact,on likely depending on size and duration of cyclic loading <br />Zone A, Cyclic liquefaction and strength loss likely depending on loading and ground <br />geometry <br />Zone B: Liquefaction and post-earthquake strength loss unlikely, check cyclic softening <br />Zone C: Cyclic liquefaction and strength loss possible depending on soil plasticity, <br />brittleness/sensitivity, strain to peak undrained strength and ground geometry <br />CLiq v. 1.5.1.16 - CPT Liquefaction Assessment Software - Report created on: 11/2/2011, 1:24:20 PM 17 <br />Project file: P:\Leighton Consulting\603000\603284.001 Orangewood\Analyses\orangewood_cpt.clq