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3000 S Sycamore St Unit# A - Plan
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6/5/2025 7:37:07 AM
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6/5/2025 7:36:43 AM
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Plan
Permit Number
20182272
101118488
Full Address
3000 S Sycamore St Unit# A
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McPherson Engineering By:T.B. <br />Da :01/04/4 <br />Seismic Design Parameters <br />Risk Category =2 Per Table 1-5-1 R =6.5 Response Modification Factor (Table 12-2.1) <br />Site Class = D Per 11.4.2 Ie =1 Seismic Importance Factor (Table 1.5-2) <br />Ss =1.35 Short Period P.G.A. <br />S1 =0.48 1-Sec Period P.G.A. <br />S.D.C. =D Seismic Design Category Per 11.6 <br />Fa =1.20 Site Coefficient per Table 11.4-1 ASCE 7-16 Supplement #1 Tables used for Fa and Fv <br />Fv =1.70 Site Coefficient per Table 11.4-2 (note: section 11.4.8 Exception #2 calc used) <br />SMS = SDS Fa =1.62 Short Period M.C.E. Per Eq. 11.4-1 <br />SM1 = SD1 Fv =0.81 1-Sec Period M.C.E. Per Eq. 11.4-2 <br />SDS = 2/3 (SMS) =1.08 Short Period Design Parameter Per Eq 11.4-3 <br />SD1 = 2/3 (SM1) =0.54 1-Sec Period Design Parameter Per Eq 11.4-4 <br />Approximate Fundamental Period (Per 12.8.2.1) <br />per Eq. 12.8-7 <br />hn = 15 ft <br />Ct =0.02 (per table 12.8-2) <br />x = 0.75 (per table 12.8-2) <br />T =0.15 sec Approximate Fundamental Period <br />TL =8 sec Long-Period Transition Period per Figure 22-12 <br />Seismic Response Coefficient (Per 12.8.1.1) <br />CS = (SDS Ie)/R = 0.17 Seismic Response Coefficient Per Eq. 12.8-2 <br />Cs1 = 1.5*(SD1 Ie)/R T = 0.82 Max. Seismic Response Coefficient Per Eq. 12.8-3 if T ≤ TL <br />Cs2 =0.01 Min. Seismic Response Coefficient Per Eq. 12.8-5 <br />Cs2 = 0.044 SDS Ie =0.05 Min. Seismic Response Coefficient Per Eq. 12.8-5 <br />Cs3 = 0.5 S1 Ie/R =0.04 Min. Seismic Response Coefficient Per Eq. 12.8-6 if S 1 ≥ 0.6g <br />CS =0.17 Design Seismic Coefficient <br />Check Additional Base Shear <br />Wexisting =34.0 kips Weight of Existing Structure <br />Wpanels =1.5 kips Weight of Proposed Panels <br />Vexisting = Cs Wexisting =5.6 kips Roof Level Shear of Existing Structure <br />Vpanels = Cs W panels =0.2 kips Additional Roof Level Shear of Proposed Panels <br />Vpanels <br />Vexisting <br />Lateral Loads <br />T = Ct (hn)x <br /> = 4.30% < 10%PER C.E.B.C. 502.5 EXCEPTION, STRUCTURE DOES NOT <br />REQUIRE SEISMIC RETROFIT, PANELS OK! <br />01 04/04 12: PM <br />5 of 7 <br />©McPherson Engineering <br />3000 S Sycamore St Unit# <br />A- 201822724/29/2024
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