Laserfiche WebLink
E/W SEISMIC FORCES per ASCE 7-16 <br />Structural System <br />Seismic Force Resisting System: <br />Response Modification Coefficient, R: <br />System Limitation/ Height Limit ft <br />Structure Period <br />T =building period by analysis <br />type = <br />hn =Structure height <br />Ta =ASCE 7-16 eq. (12.8-7) <br />Cu =Period Cap Does not Apply <br />Cs mod. factor =Exemption #2 of 11.4.8, ASCE 7-16 <br />Tused =Base Shear Period used Tused =<-- For Drifts <br />Calculate Base Shear <br />Strength Drifts (period cap not considered) <br /> <br />ASCE 7 eq. (12.8.2) Governs <-- for strength <br />ASCE 7 eq. (12.8.2) Governs <-- for drifts <br />Project : <br />0.15 sec <br />Other Structural System <br />Cypress Fire Station <br /> No: 23005.00 <br />By: CHP/JS <br />Date: 5/17/23 Page: <br />Cs =0.168g <br />Cs == <br />= <br />A.15 Light frame (wood) walls sheathed with wood structural panels rated for <br />shear resistance or steel sheets <br />100% <br />SDS <br />(R/Ie) <br />15.0 ft <br />0.15 sec 0.15 sec <br />65 <br />Cs shall equal the value from ASCE 7 eq. (12.8-2)0.17g SDS =(R/Ie)0.17g <br />1.40 <br />T(R/Ie) <br />However, Cs need not exceed ASCE 7 eq. (12.8-3) if T is less <br />than TL <br />& Cs need not exceed ASCE 7 eq. (12.8-4) if T is greater the TL <br />Cs =0.04g =0.5S1 <br />(R/Ie) <br />Cs =0.05g =max(0.044S <br />DsIe, 0.01) <br />Cs =41.95g =SD1TL <br />T2(R/Ie) <br />SD1 <br />6.50 <br />=Cs shall not be less than ASCE 7 eq. (12.8-5) <br />Strength: if S1 > 0.60g then Cs shall not be less than ASCE 7 eq. (12.8-6); Drift: Cs <br />shall not be less than ASCE 7 eq. (12.8-6), regardless of S1 <br />SD1 <br />T(R/Ie) <br />41.95g =SD1TL <br />T2(R/Ie) <br />max(0.044S <br />DsIe, 0.01) <br />Cs =0.168g <br />N.R. <br />0.80g <br />(R/Ie)0.04g =0.5S1 <br />=Cs =0.17g <br />Printed on: 5/14/2024 at 3:02 PM 23005.10_Project Calculations_2021 IBC1.xlsx <br />17