2064 & 2066 S Van Ness Ave - Plan

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HOANG DAN PHAM, P.E HD ENGINEERING CONSTRUCTION 6/29/2025 SEISMIC LOADS ANALYSIS - ADU Per ASCE 7-16, Section 12.8 (Equivalent-Lateral-Force ) Location:SANTA ANA Latitude.:33.7202 Longitude.:-117.8733 At 0.2 sec., 5% Damped Spectral Response Acceleration Parameter:SS =1.470 g At 1.0 sec., 5% Damped Spectral Response Acceleration Parameter:S1 =0.510 g Per ASCE 7-16, Table 20.3-1 Site Classification:D Per ASCE 7-16, Table 11.4-1 For Short Period, Site Coefficient:Fa =1.2 Per ASCE 7-16, Section 11.4.8 For Long Period, Site Coefficient:Fv =1.8 Adjusted MCE Spectral Respone Acceleration Design MCE Spectral Acceleration SMS = Fa x SS SMS =1.764 SDS = (2/3) x SMS SDS =1.176 g SM1 = FV x S1 SM1 =0.918 SD1 = (2/3) x SM1 SD1 =0.612 g TS = SD1/SDS TS =0.533 sec. T0 = 0.2 x (SD1/SDS)T0 =0.107 sec. Per ASCE 7-16, Table 1.5-2 Occupancy Importance Factor:Ie =1.0 Per ASCE 7-16, Table 12.2-1 Response Modification Coefficient:R =6.5 Per ASCE 7-16, Figure 22-15 Long-Period Transition Period: TL =8.0 sec. Per ASCE 7-16, Table 11.6-1&2 Seismic Design Category:D Seismic Roof Height:hn =16.0 ft Per ASCE 7-16, Table 12.8-2 T = 0.02 x (hn)0.75 T =0.15 sec. Per ASCE 7-16, Table 12.3-3 Redundancy Factor for SDC D r =1.3 For TL>T CSmax1 = SDS / [T x (R/IE)] =1.21 For TL<T CSmax2 = SD1 x TL / [T2 x (R/IE)] =33.48 CS = SDS x (R/IE) =0.181 OK CSmin1 =0.044SDS x Ie =0.05 CSmin2 =0.01 For S1>0.6 CSmin3 = 0.5 x S1 / (R/IE) =0.04 V = r x CS x W =0.235 x W Exterior Walls Interior Walls Total Height Weight Length Mass Height Weight Length Mass Mass (ft)(psf)(ft)(kips)(ft)(psf)(ft)(kips)(kips) ADU 9.00 17.0 129.0 19.74 9.00 7.0 120.0 7.56 27.30 Diaphragms Walls Total Seismic 0.7E Area Weight Mass Above Below Mass Mass VX (sq ft)(psf)(kips)(kips)(kips)(kips)(kips)(lbs) ADU 797.0 17.0 13.55 2.50 13.65 16.15 29.70 6985 4889 PORCH 43.0 28.0 1.20 1.00 0.00 1.00 2.20 518 363 5252 L-2