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LI & LI ENGINEERING SERVICES <br />REGISTERED CIVIL ENGINEERS <br />OWNER: <br />PROJECT: <br />Framing: <br />ROOF RAFTERS: <br />MAX SPAN = <br />LL = <br />DL = <br />SPACING = <br />8.5 FT <br />20 psf <br />12 psf (Vaulted) <br />24 in <br />Fb = <br />900 <br />PSI <br />Fv = <br />180 <br />PSI <br />E = <br />1.60E+06 <br />PSI <br />CD = Duration Factor = <br />1.25 <br />Cr = Repetitive use = <br />1.15 <br />CF = Size Factor = <br />1.1 <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />e n <br />GE -ARVr4p._Wd <br />DAFR-PERMI I iss DANCE <br />T B NO: <br />Master ID: <br />Date: <br />D.F. #2 <br />Size F <br />Fb <br />d <br />A <br />S <br />I <br />2X4 <br />1.5 <br />900 <br />3.5 <br />5.25 <br />3.06 <br />5.36 <br />2X6 <br />1.3 <br />900 <br />5.5 <br />8.25 <br />7.56 <br />20.80 <br />2X8 <br />1.2 <br />900 <br />7.25 <br />10.88 <br />13.14 <br />47.63 <br />2X10 <br />1.1 <br />900 <br />9.25 <br />13.88 <br />21.39 <br />98.93 <br />2X12 <br />1 <br />900 <br />11.25 <br />16.88 <br />31.64 <br />178.00 <br />2X14 <br />0.9 <br />900 <br />13.25 <br />19.88 <br />1 43.89 <br />290.80 <br />Uniform Load W= <br />64.00 PLF <br />Reaction, R = <br />272 LBS <br />V = W*L/2= <br />272 LB <br />M = W*LA2/8 = <br />578 LB -FT <br />Inertia Selected = <br />98.93 INA4 <br />A=1.5*V/(Fv * CD.) = <br />1.8 INA2 <br />< 13.88 INA2 <br />S = M *12 / (Fb*CD*Cr*CF) = <br />4.87 INA3 <br />< 21.39 INA3 <br />D = (5/384)*(W*LA4)*1728/(E*I) = <br />0.047 IN <br />< L*12/180 IN = 0.57 IN <br />(CBC Table 1604.3) <br />USE 2X10D.F.#2 @24"O.C. <br />HDRS : <br />MAX SPAN L = <br />5 FT <br />Roof LL = 20 psf <br />LL = <br />40 psf <br />Roof DL = 12 psf <br />DL = <br />10 psf <br />Roof Tributary = 4 ft <br />FLOOR TRIBUTARY SPAN = <br />0.00 FT <br />Wall DL = <br />15 Ibs <br />Wall Height = <br />2 ft <br />Fb = 900 PSI <br />Fv = <br />180 PSI <br />E = <br />1.6E+06 PSI <br />CD = Duration Factor = <br />1.25 <br />CF = Size Factor = <br />1.3 <br />Uniform Load W= <br />158 PLF <br />Reaction R= <br />395 LBS <br />V = W*L/2 = <br />395 LB <br />M = W*LA2/8 = <br />494 LB -FT <br />Inertia Selected = <br />48.53 INA4 <br />A = 1.5*V/(Fv * CD.) = <br />2.6 INA2 <br />< 19.25 INA2 OK <br />S = M *12 / (Fb*CD*CF) = <br />4.05 INA3 <br />< 17.65 INA3 OK <br />D = (5/384)*(W*LA4)*1728/(E*I) = <br />0.029 IN <br />< L*12/180 = 0.33 IN OK <br />USE 4 X 6 D.F.# 2 <br />OK <br />OK <br />OK <br />