7808 BEVERLY BLVD 2025-05-28 - Laserfiche WebLink

Project Title: 1'1 17 F R & ASSOCIATES PLLC Engineer: tjp ":" ;b,"a„°" d"` Project ID: w�..pa;M�r,7.',.." Project Descr: caR,u s A v.. Printed'12 APR 2023, 1.12PM L ASCE Seismic Base Shear -File:46-eams temptate.ec6 SoP,wa a•.. "ght ENERCALC,INC.1983-2020,Build:12.20.5.31 Lic.#:KW-06006556 PITZER&ASSOCIATES 23-109 Risk Category Calculations per ASCE 7-16 Risk Category of Building or Other Structure: "Ii":All Buildings and other structures except those listed as Category I,Ill,and IV ASCE 7-16,Page 4, Table 1.5-1 Seismic Importance Factor = 1 ASCE 7-16,Page 5, Table 1.5-2 ASCE 7-16 11.4.2 Max.Ground Motions,5%Damping: Latitude = 47.893 deg North SS = 1.4128 g,0.2 sec response Longitude = 122.198 deg West S 1 = 0.5423 g,1.0 sec response Location: Everett,WA 98208 Conforms to ASCE 7 Section 12.8.1.3:Regular structure with period of 0.5 s or less,SDS limited to max of 0.7*SDS or 1.0 for calculation of Cs. Site Class,Site Coeff.and Design Category Site Classification "D":Shear Wave Velocity 600 to 1,200 ft/sec = D ASCE 7-16 Table 20.3-1 Site Coefficients Fa&Fv Fa = 1.20 ASCE 7-16 Table 11.4-1&11.4-2 (using straight-line interpolation from table values) Fv = 1.74 Maximum Considered Earthquake Acceleration S MS=Fa*Ss = 1.695 ASCE 7-16 Eq. 11.4-1 S M1 =Fv*S1 = 0.945 ASCE 7-16 Eq. 11.4-2 Design Spectral Acceleration S DS S M52/3 = 1.130 ASCE 7-16 Eq.11.4-3 S 01 S M12/3 = 0.630 ASCE 7-16 Eq. 11.4-4 Seismic Design Category = D ASCE 7-16 Table 11.6-1&-2 Resisting System ASCE 7-16 Table 12.2-1 Basic Seismic Force Resisting System... Bearing Wall Systems 15.Light"frame(mood)walls sheathed wlwood structural panels rated for shear resistance. Response Modification Coefficient "R" = 6.50 Building height Limits: System Overstrength Factor "Wo" = 2.50 Category"A&B"Limit: No Limit Deflection Amplification Factor "Cd' = 4 Category"C"Limit. No Limit Category"0"Limit: Limit=65 NOTE!See ASCE 7-16 for all applicable footnotes. Category"E"Limit: Limit=65 Category"F'Limit: Limit=65 Lateral Force Procedure ASCE 7-16 Section 12.8.2 Equivalent Lateral Force Procedure The'Equivalent Lateral Force Procedure is being used according to the provisions of ASCE 7-1612.8 Determine Building Period Use ASCE 12.8-7 Structure Type for Building Period Calculation: Afl Other Structural Systems "Ct"value = 0.020 "hn":Height from base to highest level = 15.0 ft "x"value = 0.75 "Ta"Approximate fundemental period using Eq.12.8-7: Ta=Ct*(hn^x) = 0.152 sec "TL":Long-period transition period per ASCE 7-16 Maps 22-14->22-17 6.000 sec Building Period"Ta"Calculated from Approximate Method selected = 6.152 sec "Cs"Response Coefficient ASCE 7-16 Section 12.8.1.1 S Ds:Short Period Design Spectral Response = 1.130 From Eq.12.8-2, Preliminary Cs = 0.174 "R":Response Modification Factor = 6.50 From Eq.12.8-3&12.8-4,Cs need not exceed = 0.636 "I":Seismic Importance Factor = 1 From Eq.12.8-5&12.8-6, Cs not be less than = 0.050 User has selected ASCE 12.8.1.3:Regular structure, Cs:Seismic Response Coefficient = = 0.1739 Less than 5 Stories and with T<<=0.5 sec, SO Ss<=1.5 for Cs calculation