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5) Select the lightest W310 that can resist the given loads as shown in the figure. Use the table below, with the x-axis. Use Ow= 120MPa. Answer: (10pts) 30 kN/m 16 kN B E wwwwww W W W W W W W W W W W 4.00m Designation in. x lb/ft 310 x 500 W 12 x 310 x 454 W 12 x 310 x 415 W 12 x 310 x 375 W 12 x 310 x 342 W 12 x 310 x 313 W 12 x 310 x 283 W 12 X 310 x 253 W 12 x 310 x 226 W 12 X 310 x 202 W 12 x 310 x 179 W 12 x mm x kg/m 336 305 279 252 230 210 190 170 152 136 120 63 700 57 800 52 800 47 800 43700 39 900 36000 32 300 28 900 25 800 22 800 20 KN Vc 2.00m 1.50m Web Flange Distance Area Depth Thick- tw Width Thick-TkK₁ A d ness 2 bf ness tw tr mm² mm mm mm mm mm mm mm mm 22.55 340.0 45.10 75.1 239 94 38 41.30 20.65 336.0 68.7 241 87 36 35 81 75 33 32.60 30.00 32 30 26.90 38.90 19.45 334.0 62.7 241 35.40 17.70 330.0 57.2 241 16.30 328.0 52.6 242 70 15.00 325.0 48.3 240 67 13.45 322.0 44.1 241 62 12.20 319.0 39.6 242 57 35.6 240 54 31.8 243 49 28.1 241 46 24.40 22.10 11.05 317.0 20.10 10.05 315.0 18.00 9.00 313.0 427 415 403 391 382 374 365 356 348 341 300 2.00m D m. 的