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BRACE ANALYSIS 4ft Wide Bay (Panel 1) <br />Analyzed per RMI, AISI 2012 (LRFD) and the 2022 CBC. <br />Section subject to torsional or flexural-torsion buckling (Section C4.1.2) <br />Kx <br /> . Lx / Rx = 0 . 52 / 0.718 = 72.45 <br />Ky <br /> . Ly / Ry = 1 . 52 / 0.484 = 107.48 <br />KL/Rmax = 107.48 <br />ro =(rx <br />2 + ry <br />2 + Xo <br />2)1/2 (Eq. C3.1.2.1- <br />7) <br />= (0.7182 + 0.4842 + 02)1/2 = 0.866 in. <br />b = 1 - (Xo/ro)2 (Eq C4.1.2-3) <br />= 1 - (0/0.866)2 = 1 <br />Fe1 = P2E / (KL/r)max <br />2 (Eq C4.1.1-1) <br />= 3.142 . 29500 / 107.482 = 25.203 ksi <br />Fe2 =(1 / 2b)((sex + st) - (sex + st)2 - (4bsexst))1/2)(Eq C4.1.2-1) <br />= (1 / (2 . 1)((55.463 + 7972.307) - (55.463 + 7972.307)2 <br />- (4 . 1 . 55.463 . 7972.307))1/2)= 55.463 ksi <br />where: <br />sex =P2E / (KxLx / Rx)2 (Eq C3.1.2-11) <br />= 3.142 . 29500 / 72.452 = 55.463 ksi <br />st =1 / Aro <br />2(GJ + (P2ECw) / (KtLt)2)(Eq C3.1.2-9) <br />= 1 / 0.346 . 0.8662(11300 . 0.183 <br />+ (3.142 . 29500 . 0.002) / (0.8 . 52)2) = 7972.307 ksi <br />Fe = Min(Fe1, Fe2) =25.203 ksi <br />Pn = Aeff <br /> . Fn (Eq C4.1-1) <br />lc = (Fy / Fe)1/2 = (55 / 25.203)1/2 = 1.477 (Eq C4.1-4) <br />Since lc < 1.5: <br />Fn = (0.658^(lc <br />2)) . Fy = 22.064 (Eq C4.1-2) <br />Thus: <br />Pn = 7631 lbs <br />Pa = 6487 lbs <br />1.969 x 1.181 - .059 (Tube) <br />SECTION PROPERTIES <br />Depth 1.969 in. <br />Width 1.181 in. <br />t 0.059 in. <br />Radius 0.088 in. <br />Area 0.346 in.2 <br />AreaNet 0.346 in.2 <br />Ix 0.178 in.4 <br />Sx 0.181 in.3 <br />Sx Net 0.181 in.3 <br />Rx 0.718 in. <br />Iy 0.081 in.4 <br />Sy 0.137 in.3 <br />Ry 0.484 in. <br />J 0.183 in.4 <br />Cw 0.002 in.6 <br />Jx 0 in. <br />Xo 0 in. <br />Kx 0 <br />Lx 52 in. <br />Ky 1 <br />Ly 52 in. <br />Kt 0.8 <br />Fy 55 ksi <br />Fu 70 ksi <br />Q 1 <br />G 11300 ksi <br />E 29500 ksi <br />Cmx 0.85 <br />Cs -1 <br />Cb 1 <br />Ctf 1 <br />Phib 0.9 <br />Phic 0.85 <br />PROJECT: <br />FOR: <br />ADDRESS: <br />SHEET#: <br />CALCULATED BY: <br />DATE: <br />Power Distribution Inc <br />Aztec_steve peterson <br />4011 W. CARRAIGE D <br />SANTA ANA, CA <br />27 <br />kelvira <br />6/19/2024 <br /> TEL:(909)869-0989 <br /> 1130 E. CYPRESS ST, COVINA, CA 91724 <br />PN:20240103_2 <br />4011 W Carriage Dr <br />9/11/2024