Given:

Lp$=2249\mathrm{.}13$ mm

Lr$=8643\mathrm{.}44$

Answer:

$1.$ Cb for bd$=2\mathrm{.}192$

$2.$ Cb for be$=2\mathrm{.}635$

$3.$ Design strength for segment bd$=1082\mathrm{.}52$

$4.$ Design strength for segment be$=1082\mathrm{.}52$

Show complete solution on how to get the answers of $1,2,3,4$

Doubly symmetric I$-$section properties:

$b\frac{f}{2}tf=7\mathrm{.}78,J=1920{10}^{3}m{m}^3,ry=45mm,Zx=4850{10}^{3}m{m}^3,Sx=3890{10}^{3}m{m}^3$

$\frac{h}{t}w=52\mathrm{.}7,Cw=4810{10}^{9}ho=520mm,rts=66mm,$