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Design of Structural Steel Section Under Axial Force & Bending : General ---------------------------------------------------------------------------------- Factored Direct Load (KN) = 30 Nature Of Load = compression Factored Bending Moment_MZZ (KN-M) = 145 Factored Bending Moment_MYY (KN-M) = 1 Factored Shear Force {SF_ZZ} In KN = 3 Factored Shear Force {SF_YY} In KN = 1 Permissible L/R ratio = 180 Eff. LXX (MM) = 4000 Eff. LYY (MM) = 4000 Permissible Deflection in MM = 40 Yield Stress in N/MM2 {Fy} = 250 Depth of Section (MM) = 450 Width of Section (MM) = 150 Thickness of Flange (MM) = 17.4 Thickness of Web (MM) = 9.4 Izz in CM4 = 30390.8 Iyy in CM4 = 834 area in CM2 = 92.27 Zpz in CM3 = 1533.36 Zpy in CM3 = 186.8 Slender Sec. Limit for Flange under Bending Comp. = 13.6 Slender Sec. Limit for Web under Bending Comp. = 42 Slender Sec. Limit for Web under Axial Compression = 42 Design Member as : Plastic Factor Alpha for Buckling Class Under Axial Comp. = 0.21 Factor Alpha for Buckling Class Under Bending Comp. = 0.21 Total Weight of Section in Kg = 325.8 Zz in CM3 = 1350.7 Zy in CM3 = 111.2 Rz in CM = 18.14 Ry in CM = 3 ep = 1 b / tf Ratio = 8.61 d / tw Ratio = 41.19 ym0 = 1.1 Beta = 1 SR_ZZ = 22.04 SR_YY = 133.04 SR_Critical = 133.04 Actual Deflection in MM = 2.65 Permissible Deflection in MM = 40 Euler Buckling Stress_ZZ {fcc} in N/MM2 = 4064.47 Effective SR_ZZ {Lambda} = 0.24 Value of Phi = 0.53 Design Compressive Stress_ZZ in N/MM2 = 224.85 Compressive Strength_ZZ of Section in KN = 2074.77 Euler Buckling Stress_YY {fcc} in N/MM2 = 111.53 Effective SR_YY {Lambda} = 1.49 Value of Phi = 1.75 Design Compressive Stress_YY in N/MM2 = 84.92 Compressive Strength_YY of Section in KN = 783.57 Tensile Cap. of Section in KN = 2097.04 60 % Shear_ZZ Cap. of Section in KN = 307.28 60 % Shear_YY Cap. of Section in KN = 410.98 Mcr in KN-M = 352.95 Extreme Fiber Bending Comp. Stress {fcr} in N/MM2 = 230.18 Lamda_LT = 1.04 PHI = 1.13 XLT = 0.63 Design Bending Compressive Stress {fbd} in N/MM2 = 144.56 Shape Factor_ZZ = 1.13 Buckling Resistance_ZZ of Section in KN-M = 221.67 Shape Factor_YY = 1.67 Buckling Resistance_YY of Section in KN-M = 42.45 N / Nd = 0.03 MZ / Mdz = 0.65 MY / Mdy = 0.02 Section Safe, Ratio <= 1 :: Ratio = 0.71 Refer Section Strength : Clause 9.3.1.1 Ky = 1.03 KLT = 0.99 ny = 0.03 Lambda_Y = 133.04 Lambda_LT = 1.04 Cmy = 0.95 Cmlt = 0.95 Sec. Safe, Ratio <= 1 :: Ratio = 0.71 :: Refer Member Strength : Clause 9.3.2.2 Ky = 1.03 ny = 0.03 Kz = 1.01 nz = 0.01 Cmy, Cmz = 0.95 Sec. Safe, Ratio <= 1 :: Ratio = 0.65 :: Refer Member Strength : Clause 9.3.2.2 <<<<< Section is Safe >>>>>