Question

Hi! Really stuck on this question. Could I please have some help?

Question 1 (This question continues from Topic 2 Q1) Member ABCD is loaded and supported as shown in Figure 1. Select a suitable minimum weight square hollow section (SHS) for member CD from the table provided below, checking for buckling and/or squashing where appropriate. Assume both ends of CD are pinned and the yield stress is 350MPa and E-200,000 MPa 50 kN 30 kN 10 kN/m 30 kN B A Internal pin D 4 m 2 m 2 m 2 m Figure 1 TABLE 1.2-5(2) DIMENSIONS AND PROF SQUARE HOLLOw SECTIONS DIMENSIONS AND RATIOS PROPERTI Designation Mass Ena Surtc Gross Sectien Area A About and s-ar b-2 t perm pert mm mm 10 1mm 10mm 65x60 SHS SC SHS 40 SHS 30SHS 25 SHS 20 SHS 65x 101 875 723 566 478 3.58 0234 c239 0243 c250 0251 0253 23.1 273 336 441 526 653 8.83 110 143 197 240 305 1290 1110 921 721 609 94 0706 0638 C552 0454 21.7 196 175 140 120 994 178 156 132 14 89 729 0391 0323 C 179 0183 0.190 0191 0193 0195 50x 50x50 SHS 40 SHS 30 SHS 25SHS 20 SHS 16 SHS 639 535 425 360 2930 238 279 342 47 53.1 658 817 800 10 5 147 8.0 23.0 29.3 814 681 541 459 374 303 0257 c229 9.195 0169 0.141 0.117 103 915 779 678 566 468 851 7.33 592 509 420 344 40x 40x40 SHS 800 113 140 180 23.0 409 33C 25 SHS 282 231 188 0143 0150 0151 0153 C 155 349 453 537 664 823 521 421 359 294 239 0105 526 466 4.11 347 290 438 35 313 30 SHS 93822 00604 20S 16 SHS 26 2.15

Answer 1

Gueslions Selution Giiven ha shoush as baded p Suppded Mauber ABC0 ique beao SokN lokN 30KN 3 D A Pin 24 Now See aboue.diogiau (e) is a oe Mu =0 Re yeld sheis =350MPa . E 200)000 MPa . Sepau dros Cok be chown Ac Nows poist topo we take pat of H giuen A above mebesp Ac okw/w BokN Sokn aflu

Now drous Poid e o Poist giveu diagrow Ds 3okN. R: kase to udw dk bukt:uq crio or. we Past J Le Le pied join! E 200,000 MPa Ipu) ohume Coie bi p kN SubitiAle above spieaiok x 200/000I 9.8596 X 200 ,000y 16,000/000 30 YIO 91,920 xJ 16/000, 000 30 x 10 o.1232H5 x 30x 1o O.1232 5 J : 2 P3, HPI.58

Square hallow saion Can aloose we Row giveu taLle.