material : $Fe37$

A column made out of double $430,y=$ hown in the figure

$(30)a)$ Calculate the safeload P

$(30)$b$-)$ Desion connection plates

using welded connections

Q$2$

$\{\begin{array}{c}\text{:}{}_0=+4\mathrm{.}5+m\\ T_0=9& \text{t}\text{o}\text{n}& \end{array}$

$($Fe $37,$ foading $1)$

a$.)$hoose an I soction te earry the bood's Sofely

bv$)$ Prrange an evtension odinetiont af $)=(bol+s$