Laserfiche WebLink
' Project Title: <br /> I <br /> _ Engineer: <br /> Project ID:UMLAUF ENGINEERS Project Descr: <br /> Printed:12 APR 2021, 8:01AM <br /> ASCE Seismic Base Shear File:Zap.ec6 <br /> Software copyright ENERCALC,INC.1983-2020,Build:12.20.8.24 <br /> Lic.#:KW-06011909 L2 Engineers <br /> DESCRIPTION: Seismic <br /> Seismic <br /> Risk Category Calculations per ASCE 7-16 <br /> Risk Category of Building or Other Structure: "II":All Buildings and other structures except those listed as Category I,III,and IV ASCE 7-16,Page 4, Table 1.5-1 <br /> Seismic Importance Factor = 1 ASCE 7-16,Page 5,Table 1.5-2 <br /> USER DEFINED Ground Motion ASCE 7-1611.4.2 <br /> Max.Ground Motions,5%Damping: <br /> Ss = 1.444 g,0.2 sec response <br /> S 1 = 0.5520 g,1.0 sec response <br /> 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. <br /> Site Class,Site Coeff.and Design Category <br /> Site Classification "C":Shear Wave Velocity 1,200 to 2,500 ft/sec = C ASCE 7-16 Table 20.3-1 <br /> Site Coefficients Fa&Fv Fa = 1.20 ASCE 7-16 Table 11.4-1&11.4-2 <br /> (using straight-line interpolation from table values) Fv = 1.45 <br /> Maximum Considered Earthquake Acceleration S MS=Fa*Ss = 1.733 ASCE 7-16 Eq. 11.4-1 <br /> S M1=Fv*S1 = 0.802 ASCE 7-16 Eq. 11.4-2 <br /> Design Spectral Acceleration S ID Sr S MS213 = 1.155 ASCE 7-16 Eq. 11.4-3 <br /> S Dt S M12/3 = 0.534 ASCE 7-16 Eq. 11.4-4 <br /> Seismic Design Category = D ASCE 7-16 Table 11.6-1&-2 <br /> Resisting System ASCE 7-16 Table 12.2-1 <br /> Basic Seismic Force Resisting System... Bearing Wall Systems <br /> 15.Light-frame(wood)walls sheathed wlwood structural panels rated for shear resistance. <br /> Response Modification Coefficient "R" = 6.50 Building height Limits: <br /> System Overstrength Factor "Wo" = 2.50 Category"A&B"Limit: No Limit <br /> Deflection Amplification Factor "Cd" = 4.00 Category"C"Limit: No Limit <br /> Category"D"Limit: Limit=65 <br /> NOTE!See ASCE 7-16 for all applicable footnotes. Category"E"Limit: Limit=65 <br /> Category"F"Limit: Limit=65 <br /> Lateral Force Procedure ASCE 7-16 Section 12.8.2 <br /> Equivalent Lateral Force Procedure <br /> The"Equuivalent Lateral Force Procedure"is being used according to the provisions of ASCE 7-1612.8 <br /> Determine Building Period Use ASCE 12.8-7 <br /> Structure Type for Building Period Calculation: All Other Structural Systems <br /> "Ct"value = 0.020 "hn":Height from base to highest level = 9.0 ft <br /> "x"value = 0.75 <br /> "Ta"Approximate fundemental period using Eq.12.8-7: Ta=Ct*(hn^x) = 0.104 sec <br /> "TL":Long-period transition period per ASCE 7-16 Maps 22-14->22-17 6.000 sec <br /> = 0.104 sec <br /> "Cs"Response Coefficient ASCE 7-16 Section 12.8.1.1 <br /> S Os:Short Period Design Spectral Response = 1.155 From Eq.12.8-2, Preliminary Cs = 0.178 <br /> "R":Response Modification Factor = 6.50 From Eq.12.8-3&12.8-4,Cs need not exceed = 0.791 <br /> "I":Seismic Importance Factor = 1 From Eq.12.8-5&12.8-6, Cs not be less than = 0.051 <br /> User has selected ASCE 12.8.1.3:Regular structure, Cs:Seismic Response Coefficient = = 0.1777 <br /> Less than 5 Stories and with T<<=0.5 sec, SO Ss<=1.5 for Cs calculation <br />