Question 2 A grade S355JR steel beam is required to support the loads as shown in Figure 2 below. Lateral support to the

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Question 2 A Grade S355jr Steel Beam Is Required To Support The Loads As Shown In Figure 2 Below Lateral Support To The 1 (110.07 KiB) Viewed 72 times

Question 2 A Grade S355jr Steel Beam Is Required To Support The Loads As Shown In Figure 2 Below Lateral Support To The 2 (92.52 KiB) Viewed 72 times

Question 2 A Grade S355jr Steel Beam Is Required To Support The Loads As Shown In Figure 2 Below Lateral Support To The 3 (173.86 KiB) Viewed 72 times

Question 2 A grade S355JR steel beam is required to support the loads as shown in Figure 2 below. Lateral support to the compression flange will be provided at the position of the point loads, and the supports may be considered to be restrained against torsion. Initial calculations have shown that A 533 x 210 x 82 l-section is adequate. Ignoring the self- weight of the beam. Do the following: (30) 2.1 Draw the shear force and bending moment diagrams showing all critical values. (7) 2.2 Check shear and flexure on the critical segment B-C. (18) 2.3 Determine the magnitude of the maximum ultimate point load that could be placed on the beam directly above support D if the length of stiff bearing at the support is 100 mm. (consider yielding and crippling). (5) Dead load 10 KN Dead load = 21 kN Live load 20 kN Live load = 9.5 KN Dead load 5 kN/m Live load = 2 kN/m C 2 m A 2m 5 m I Figure 2: Simply supported beam [30 Marks]

Steel Table 2.1 MECHANICAL PROPERTIES FOR STEEL TO SANS 50025-2 Yield stress f, (minimum) Ultimate for thickness / (mm) tensile Grade Minimum average strength 3<ts 16 16<1s40 40s63 63<ts80 80-100 f energy absorbed MPa mm mm mm mm mm S235JR 360 to 510 235 225 215 215 215 20 27 (only if specified) S235J0 360 to 510 235 225 215 215 215 0 27 S235J2 360 to 510 235 225 215 215 215 -20 27 S275JR 410 to 560 275 265 255 245 235 20 27 (only if specified) S275J0 410 to 560 275 265 255 245 235 0 27 S275J2 410 to 560 275 265 255 245 235 -20 27 S355JR 470 to 630 355 345 335 325 315 20 27 (only if specified) S355J0 470 to 630 355 345 335 325 315 0 27 S355J2 470 to 630 355 345 335 325 315 -20 27 Notes: 1. Consult standards for thicknesses bigger than 100 mm. 2. Minimum elongation in tensile test in order of 20% - see standards. 3. Charpy tests on S235JR, S275JR or S355JR only required if specified. Charpy V notch impact test Test temperature "C

Table 2.9 (continued) I-SECTIONS (PARALLEL FLANGE) ('UNIVERSAL BEAMS') DIMENSIONS AND PROPERTIES D t₁ Designation nxbxm mm mm mm 305 x 165 x 40 40.3 303,8 165,1 10,2 46,1 307,1 165,7 11,8 54 54.0 310.9 166,8 13,7 356 x 171 x 45 45,0 352.0 171.0 9.7 10,2 51 51,0 355 6 171.5 11,5 10.2 57,0 358,6 172,1 13,0 10,2 67.1 2010 100 364.0 173,2 15,7 10,2 406 x 140 x 39 39.0 397,3 141,8 8,6 10,2 46 46.0 402.3 142.4 11.2 10.2 406 x 178 x 54 54.1 402,6 177.6 10.9 10,2 60 60,1 406.4 177,8 12,8 10,2 67 67.1 409.4 178,8 14,3 10,2 74 74,2 412.8 179.7 16,0 10.2 457 x 191 x 67 67,1 453,6 189,9 12,7 10.2 74 74.3 457 2 190,5 14,5 10,2 82,0 460.2 191,3 16,0 10,2 1036 89.3 463.6 192,0 17,7 98,3 467,6 192,8 19.6 533 x 210 x 82 82,2 528,3 208,7 13,2 12.7 92,1 533,1 209.3 15,6 12,7 101 536,7 210.1 17,4 12,7 539 5 210,7 18.8 12,7 544 6 211,9 21,3 12,7 7888 kg/m J 6.9 6,3 6.9 7,6 7,8 8,8 9,7 8,5 9,1 9.9 WOO 10.6 11,4 9,6 10.2 10.9 11.6 12.8 L C3 -الے 2 A 10 mm 5.70 6.46 7,22 8,55 4,92 5.90 8.55 9.51 10,5 11,4 12.5 10,5 11,8 12,9 13.9 15,6 About x-x 2 10 mm 2 10 mm 10 mm 1 060 1 190 1 330 1 300 1 460 1 610 1770 1960 1800 2 080 2 300 1 010 1210 718 889 1510 1470 1660 1830 2 020 2 230 2 060 2 370 2 620 2 830 3 200 146 148 149 151 185 187 188 213 217 218 10 mm 7,66 8,96 10.6 8,10 9,68 11,1 13,6 4,10 5.40 10.2 12,0 13,6 15.5 14.5 16.7 18,7 20.9 20,9 23.5 20,0 23,9 27,0 29.4 33,9 About y-y 10 mm 10 mm 94,7 mm 38,5 39,0 39,4 37,7 38,7 28,9 30.3 40,3 42.8 43,3 43,8 45,0 45,7 46.0 46,6 J 10 mm 699 921 1 220 527 772 1 030 1280 1 810 H- C 10 mm 1 180 5