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.01 <br />ET RACK DESIGN P. O Box 3707 <br />FIG 3Y C. Rossell CHECKED BY M. Abdi DATE <br />COLUMN DESIGN (CONT)- <br />FOR LM30 <br />Fy = <br />55 ksi <br />Lx = <br />48.0 in <br />Ly = <br />48.0 in <br />Kx = <br />1.00 (LONGITUDINAL) <br />Ky = <br />1.00 (TRANSVERSE) <br />A = <br />0.859 M62 <br />Ix = <br />1.373 InA4 <br />rx = <br />1.249 in <br />ry = <br />1.150 in <br />Sx = <br />0.915 inA4 <br />Sy = <br />0.752 inA4 <br />2; E 102 <br />F <br />r <br />(kl/r)x = 384 <br />(kllr)y = 41.7 <----------- GOVERNS <br />Combined Axial Compression and Bending per AISI Standard 2007 <br />Flexure (Sec C3.1.2.1 Lateral -Torsional Buckling Strength) <br />Kx = 1.7 <br />(RMI 2 6 3) Ky = 1.00 <br />Kx ' Lx / rx = <br />65.33 (Governs) <br />Ky Ly / ry = <br />41.74 <br />Kt = 1 <br />Lt = 48.0 <br />Fe = piA2 ' E / <br />(K'Llr)A2 = 68.21 <br />Cb = 12.5 Mmax / (2.5Mmax + 3Ma + 4 Mb + 3Mc) Eq. C3.1.2.1-6 <br />Mmax = <br />1049 <br />Me = <br />7.871 <br />Mb = <br />5247 <br />Mc = <br />2 624 <br />Cb = <br />1.667 <br />xo <br />.2.45 (From Summary Column Table) <br />ro = sgr1(r02 + ryA2 + xoA2) = 2.982 Eq. C3.1.2.1.7 <br />.1 = <br />0.005 (From Summary Column Table) <br />G = <br />11300 <br />Cw = <br />3.729 (From Summary Column Table) <br />LELNAME. 40 04 01 W1779152.xIE Page 11 of 14 <br />96124-2207 <br />3r 12013 9.26 AM <br />