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KR STRUCTURAL ENGINEERING, Inc Site add.: <br />2753 Waverly Dr #403 <br />Los Angeles, CA. 90039 Engineer : <br />TEL (818) 378-7173 EMAIL: kylerheepe@gmail.com Job # <br />Seismic Loading Calculations:(per ASCE 7-16) <br />Risk Category:Occupanc :"II" (table 1-1) <br />Response modification coef:R:6.5 (table 12.2-1) <br />Overstrength factor Ome a:3 (table 12.2-1) <br />Site class Site:D (CH.20 or soil eng) <br />Latitude Lat:33.72 (TerraServer USA) <br />Longitude Long:-117.88 (TerraServer USA) <br />Short period spec. resp. accl:Ss:1.5 (maps, USGS or soils eng) <br />1-second spec.resp.accl.:S1:0.6 (maps, USGS or soils eng) <br />Site coefficient:Fa:1.2 (table 11.4-1) <br />Site coefficeient:Fv:1.5 (table 11.4-2) <br />Max considered - short:SMS = Fa*Ss 1.8 (11.4-1) <br />Max considered - 1-sec:SM1 = Fv*S1 0.9 (11.4-2) <br />Design spectural accel- short:SDS = (2/3)SMS 1.2 <br />Design spectural accel- 1sec:SD1 = (2/3)SM1 0.6 <br />Height of building:H(ft):13 <br />Structure type coefficient:Ct:0.02 x:0.75 (table 12.8-2) <br />Period upper limit coef:Cu = 1.4 if SD1 > 0.3 Cu:1.4 <br /> = 1.5 if .2<SD1<0.3 <br /> = 1.6 if .15<SD1<0.2 <br /> = 1.7 if SD1<0.15 <br />Approximate period:Ta = Ct(H)^x Ta:0.136927 (section 12.8.2.1) <br />Building period:T = Cu*Ta T:0.191697 (section 12.8.2) <br />Zero period:To = .2(SD1/SDS)T0:0.1 (section 11.4.5) <br />Short period:Ts = (SD1/SDS)Ts:0.5 <br />Spectural accleration:Sa = SDS(0.4+0.6T/T0) if T<T0 (section 11.4.5) <br /> = SDS if T0<T<Ts <br /> = (SD1/T) if Ts < T Sa:1.2 <br />Seismic importance factor:IE = if (occupancy = "IV", 1.5, <br /> if (occupancy = "III", 1.25, 1.0)) <br />IE:1 <br />Seismic response coefficient:Cs = SDS/(R/IE)CS:0.184615 <br />CSMAX = SDS/(R/IE*T) CSMAX:0.481529 <br />CSMIN = MAX[0.01,0.58S1/(R/IE)]CSMIN 0.046154 <br />Cs = if(Cs<Csmin, Csmin, <br /> if(Cs>Csmax, Csmax, Cs)Cs 0.184615 <br />(continued) <br />Seismic design category :category= "D" (section 11.5 & 11.6) <br />Redundany factor :p= 1.3 (section 12.3.4.2) <br />Seismic factor :E= p*CS 0.24 <br />E *0.7 0.168 <br />2024. S. Garsney St <br />Santa Ana, CA 92707 <br />Kyle Rhee <br />2022.347 <br />2024 S Garnsey St & Unit <br />#24/18/2025