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Determine the design axial load on the column section ISMB 350 given that height of column 3m and that is pin ended assume following fy=250mpa fe 410N/mm$^{2}$ E=2$\times10^{5}N/M^{2}$
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ISMB 350

Area A=$6671mm^{2}$ bd140 tf=142 tw=81

rxx=r28=142.9

ryy=28.4

length of column =3000mm

leff=$k\times L=1\times 3000=3000m$

fy=250N/mm$^{2}$

fa=410N/mm$^{2}$

E=2$\times10^{5}N/mm^{2}$

Design strength of comp member

Pd=$Ae\times fcd$

buckling class(Is pg 44)Is pg 35 table 7

$\frac{h}{bf}=\frac{350}{140}=2.5$

${h}{bf}=2.5\geq1.2$

tf=1.42$\lt 40$

huckling about zz axis class a

buckling about yy axis class b …

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