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403 N Susan St #G & H - Plan
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Last modified
6/5/2025 7:31:28 AM
Creation date
6/5/2025 7:31:18 AM
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Plan
Permit Number
20183291
20184283
101119906
Full Address
403 N Susan St Bldg# G
403 N Susan St Bldg# H
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McPherson Engineering By: J.R. <br />Date: 5/28/24 <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 =1.31 Short Period P.G.A. <br />S1 =0.47 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 =1.58 Short Period M.C.E. Per Eq. 11.4‐1 <br />SM1 = SD1 Fv =0.80 1‐Sec Period M.C.E. Per Eq. 11.4‐2 <br />SDS = 2/3 (SMS) =1.05 Short Period Design Parameter Per Eq 11.4‐3 <br />SD1 = 2/3 (SM1) =0.53 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 = 0.16 Seismic Response Coefficient Per Eq. 12.8‐2 <br />Cs1 = (SD1 Ie)/R T = 0.54 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 =0.16 Design Seismic Coefficient <br />Check Additional Base Shea <br />Wexisting =38.4 kips Weight of Existing Structure <br />Wpanels =1.6 kips Weight of Proposed Panels <br />Vexisting = Cs Wexisting =6.2 kips Base Shear of Existing Structure <br />Vpanels = Cs Wpanels =0.3 kips Base Shear of Proposed Panels <br />Vpanels <br />Vexisting <br />Lateral Loads ‐ Detatched Structure <br />T = Ct (hn)x <br /> = < 10%PER C.E.B.C. 502.5 EXCEPTION, STRUCTURE DOES NOT <br />REQUIRE SEISMIC RETROFIT, PANELS OK!4.21% <br />5/28/2024 10:57 AM <br />7 of 9 <br />©McPherson Engineering <br />403 N Susan St #G <br />& H10/21/2024
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