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201 E MacArthur Blvd - Plan
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201 E MacArthur Blvd - Plan
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Last modified
6/6/2025 1:20:22 PM
Creation date
6/6/2025 1:20:10 PM
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Plan
Permit Number
101121870
Full Address
201 E MacArthur Blvd
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Seismic Calculation for Roof Top Screening <br />Site Coordination = 33.699871, -117.86756 <br />Soil Site Class =D <br />Risk Category =II <br />From Spectrum Data: <br />SMS =1.72 g SDS = 2/3 SMS =1.147 g <br />SM1 =1.17 g SD1 = 2/3 SM1 =0.780 g <br />Seismic Design Category =D <br />r 1.0 <br />Seismic Design Force : <br />Rp =2.5 ap =1.0 <br />Ip =1.0 z/h =1.0 <br />W p =95.0 lbs Screen Unit DL / ft <br />Fp = [0.4 ap SDS W p / (Rp/Ip)] x (1+2(z/h)) <br />=52.29 lbs <br />Fp,MAX = 1.6 SDS Ip W p Fp,MIN = 0.3 SDS Ip W p <br />=174.29 lbs =32.68 lbs <br />Therefore Fp =52.29 lbs <br />Seismic Load Effects E : <br />E =rFp ± 0.2 SDS D <br />=52.29 lbs ±21.79 lbs <br />(Lateral) (Vertical) <br />Seismic LRFD Coefficient = 0.55 <br />Over strength factor=2.50 E mh = W Eh =130.72 lbs <br />ASD design coefficient =0.39 <br />7/10 201 E MacArthur <br />Blvd3/13/2025
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