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Building Seismic Design Criteria To ASCE 7‐22 <br />1‐Storey <br />Risk Category = II <br />Ie = 1.00 Importance Factor Building Structure Type = All Other <br />R = 6.5 Cd <br />D 0 = 2.5 (for flexible diaphragms per Table 12.2-1 footnote g) <br />SS N <br />S1 = 1.0 <br />SMS hn > 65 ft <br />SM1 T Tdrift = 0.105 s <br />Ts = SD1/SDS SDS = 1.000 used for design per ASCE 7-16 Sec. 12.8.1.3 <br />TL = 8.0 s Cs1 = 0.154 (Eq. 12.8-2) <br />SDS = ⅖SMS Cs2 = SD1/(R /Iₑ)(T/1.5)L )= 1.770 max (Eq. 12.8-3) <br />SD1 = ⅖SM1 Cs3 = 0.044 min (Eq. 12.8-5) <br />V (Eq. 12.8-1) <br />ρV (LRFD) <br />For drift calculations: <br />Cs2 = SD1/(Rx/IeTdrift) = 1.180 max (Eq. 12.8-3) <br />Building Structure Class = Regular Vdrift = Cₛ₁W = 0.154W (Eq. 12.8-1) <br />Diaphragm Flexibility = Flexible*x = (Cdxe/Ie)(Vdrift/V)(Eq. 12.8-15) <br />*or LFRS spaced > 40 ft <br />Seismic Design Category = D <br />Storey Forces (LRFD) <br />Both Directions <br />Elev.Dist. Weight Area k=1.00 Force Shear Tx <br />Storey hx wx Ax Wxhx <br />k Fx fx Vx =0.05FxDx <br />(ft)(psf) (sq. ft.) (kips) (slugs)(kip*ft)(kips) (psf) (kips)(kip*ft) <br />Roof 9.15 20.6 625 12.9 0.40 118 2.0 3.2 2.0 1.8 <br />G 0.00 ‐ ‐ ‐ - - - - - - <br />Total 20.6 625 12.9 0.40 118 2.0 (LRFD) 2.0 1.8 <br />Diaphragm Forces (LRFD) <br />Diaphragm Properties Both Directions <br />Elev.Area Dimension Weight Fₚₓ₍ₘᵢₙ₎=0.2 Fₚₓ₍ₘₐₓ₎=0.4 <br />Storey hx Ax Dx Wpx Wi WpxFi/Wi SDSIeWpx SDSIeWpx Fpx fpx <br />(ft)(sq. ft.) (ft) (kips) (kips) (kips) (kips) (kips) (kips) (psf) <br />Roof 9.15 625 18.0 12.9 12.9 2.0 3.0 6.0 3.0 4.8 <br />G 0.00 ‐ ‐ ‐ - - - - - - <br />Total 625 12.9 12.9 <br />(no amendments) <br />Wx <br />Both Directions <br />A._BEARING_WALL_SYSTEMS <br />13. Light‐framed walls w/ wood panels or steel sheets <br />hi <br />= 0.530 <br />= 1.480 <br />= 0.7 s <br />(default per Section 11.4.3) <br />= 1.74 <br />Site Class = <br />Ground motion analysis <br />Total Weight <br />= 9.15 ft <br />= 0.105 s <br />= 1 Storey <br />= 2.0 kips <br />= 0.5S1/(R / Ie) <br />= 2.0 kips <br />‐ <br />20.6 <br />= 0.807 <br />= 1.160 <br />= 1.21 <br />9.15 <br />‐ <br />9.15 <br />Dist. Wt. <br />wpx <br />20.6 <br />(psf) <br />Storey <br />Height <br />(ft) <br />= 4.0δₓₑ <br />= SDS/(R / Ie) <br />= 0.154W <br />per 12.3.4.2 <br />= 4.0 <br />= Cₛ₁W <br />ADU 1123 Magnolia Ave. <br />Proj. No. 16113.00 09/30/24 <br />13 <br />1123 S Magnolia Ave <br />Unit# 22/19/2025