Designation Mass per Depth Width Thickness metre of of section section of of web flange Root Depth radius between Ratios for local buckling Second moment of area Radius of gyration fillets | i Flange Web Axis Axis Axis Axis D B t T r d B/2T d/t x-x y-y X-X - Serial size kg/m mm mm mm mm mm mm cm4 cm cm cm 457 x 191 x 89 89.3 463.4 1919 10.5 17.7 12.7 402.6 5.42 38.3 41232 2090 19.00 4.28 ii. Now, to create a detailed bending moment diagram. 2kN + A A Fig 4 - Bending Moment Diagram 1m 6kN 1kNm + B (-) 5kN + C 7kN D 4kN B (-) 2.25kNm Calculations as follows: BMA 0 BMB=RX1-21x=21-2x=1kNm 0.5 BMC = -2x0.5x -4 x 0.5-2.25kNm 2 BMD = 0 Maximum bending moment of the beam Mmax 2.25 x 106 Nmm Mmax = 2.25kNm Given section modulus of beam Z=178.2 x 103mm* M max = y Z max = 2.25 x 106 178.2 103 = 12.626 N/mm x The maximum tensile stress of the beam design is 12.626 N/mm