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ASCE 7-16 Seismic Base Shear <br />LIC# : KW-06019075, Build:20.23.05.25 PARTNER ENGINEERING AND SCIENCES INC (c) ENERCALC INC 1983-2023 <br />DESCRIPTION:Seismic Base Shear Analysis <br />Project File: 1.ec6 <br />Project Title: <br />Engineer: <br />Project ID: <br />Project Descr: <br />" Cs " Response Coefficient ASCE 7-16 Section 12.8.1.1 <br />S : Short Period Design Spectral Response 1.066 <br />" R " : Response Modification Factor 1.50 <br />" I " : Seismic Importance Factor =1 <br />0.667From Eq. 12.8-2, Preliminary Cs = <br />2.464From Eq. 12.8-3 & 12.8-4 , Cs need not exceed= <br />From Eq. 12.8-5 & 12.8-6, Cs not be less than =0.044 <br />DS <br />=Cs : Seismic Response Coefficient =0.6667User has selected ASCE 12.8.1.3 : Regular structure, <br />Less than 5 Stories and with T <<= 0.5 sec, SO Ss <= 1.5 for Cs calculation <br />= <br />= <br />Seismic Base Shear ASCE 7-16 Section 12.8.1 <br />W ( see Sum Wi below ) =5.33 kCs =0.6667 from 12.8.1.1 <br />Seismic Base Shear V = Cs * W =3.55 k <br />Vertical Distribution of Seismic Forces ASCE 7-16 Section 12.8.3 <br />" k " : hx exponent based on Ta =1.00 <br />Table of building Weights by Floor Level... <br />Wi : Weight Hi : Height (Wi * Hi^k)Cvx Fx=Cvx * V Sum Story Shear Sum Story MomentLevel # <br />1 5.33 8.50 45.31 1.0000 3.55 3.55 0.00 <br />Sum Wi =5.33 k Total Base Shear =3.55 k <br />Base Moment = <br />45.31 k-ftSum Wi * Hi = <br />30.2 k-ft <br />Diaphragm Forces : Seismic Design Category "B" to "F"ASCE 7-16 12.10.1.1 <br />Level #Wi Fi Fpx : MaxFpx : CalcdSum Fi Sum Wi Fpx Dsgn. ForceFpx : Min <br />1 5.33 3.55 3.55 5.33 3.55 1.14 2.27 2.27 3.55 <br />Wpx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Weight at level of diaphragm and other structure elements attached to it. <br />Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design Lateral Force applied at the level. <br />Sum Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sum of "Lat. Force" of current level plus all levels above <br />0.20 * S * I * WpxMIN Req'd Force @ Level . . . . . . . . . .DS <br />DSMAX Req'd Force @ Level . . . . . . . . . .0.40 * S * I * Wpx <br />Fpx : Design Force @ Level . . . . . . . . . .Wpx * SUM(x->n) Fi / SUM(x->n) wi, x = Current level, n = Top Level <br />302 E Santa Clara Ave <br />9/25/2024