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Company Boeing 12/17/2024 <br />IIRISA <br />Designer :Daniel Jaffe 3:45:57 PM <br />Job Number Checked By: Clemens Ro... <br />Model Name : 40-26 4th Floor Cantilever Rack <br />M = min(RS,F RS„F) = 43.509 k-ft Factored flexural resistance for globally (Sec. H2) <br />a�° z — d �' �t y braced member <br />Maz = OLMnz = 33.839 k-ft Factored flexural resistance (strong axis) (Sec. 133.2.2) <br />Flexural force due to factored loads (with <br />Mz = M,z = 22.131 k- ft respect to z-axis) <br />Flexural Analysis (Weak Axis) 0.028 k-ft 19.747 k-ft - - <br />Yielding and Global Lateral -Torsional Buckling <br />Elastic section modulus of full unreduced <br />Sfy <br />= 7.359 in' <br />section relative to extreme fiber in first <br />(Program <br />yielding <br />Calculated) <br />Sf — <br />7.359 in <br />Elastic section modulus of full unreduced <br />(Program <br />section relative to extreme compression fiber <br />Calculated) <br />AY <br />= 5.425 in <br />Gross cross -sectional area of member <br />rz = <br />3.569 in <br />Radius of gyration about the local z-axis <br />(strong) <br />ry <br />1.647 in <br />Radius of gyration about the local y-axis <br />(weak) <br />x, = <br />0 in <br />Local x coordinate of shear center with <br />respect to the centroid <br />E = <br />29000 ksi <br />Modulus of elasticity <br />G = <br />11520 ksi <br />Shear modulus of elasticity <br />J = <br />0.064 in <br />Torsional constant <br />Ct„ <br />= 49.661 in <br />Warping constant <br />K_ <br />— 1 <br />Effective length factor for the flexural <br />buckling about the z-axis <br />Kt <br />= 1 <br />Effective length factor for twisting <br />Distance between points which brace the <br />Lby <br />= 12 ft <br />member against flexural buckling about the <br />y-axis <br />Lt — <br />12 ft <br />Unbraced length of compression member for <br />twisting <br />Coefficient for lateral -torsional buckling <br />(Sec. F2.1.2) <br />CTF <br />= 1 <br />End moment coefficient <br />(Sec. F2.1.2) <br />j — <br />6.711 <br />r� = <br />3.93 in <br />Polar radius of gyration of cross-section <br />(Eq. E2.2-4) <br />about shear center <br />2 E <br />a;z <br />= 2 = 175.776 ksi <br />(KzLz/rz) <br />Elastic flexural buckling stress <br />(Eq. F2.1.2-2) <br />r 2 1 <br />Qt = <br />Are I GJ+ (K L j2J = 16.966 ksi <br />Torsional buckling stress <br />(Eq. F2.1.1-5) <br />RISA-3D Version 19 [ 40-26 cantilever rack copy.r3d ] Page 10 <br />