$4.$ Using the Aldred Structural drawings $($on D$2$L$)$:

a$.$ What is the column size between the $\backslash (4^\{\backslash$text $\{$th $\}\}\backslash )$ floor and roof level at grid A$5?$

b$.$ What is the baseplate type for this column and the strength of the concrete that it is bearing on$?$

c$.$ What is the length of this column?

d$.$ Determine the maximum load baseplate type E could take if it was supporting an HSS $\backslash (254\backslash$times $254\backslash$times $16\backslash )$ on $40$ MPa concrete. Check the plate in bearing and in bending. Re$-$order the steps as needed $($i$.$e$.$ you know the size, overhangs and thickness $-$ what's $\backslash (\backslash$mathrm$\{$C$\}\_\{\backslash$mathrm$\{$f$\}\}\backslash )?)$

BONUS $(2$ marks$)$: Determine the governing slenderness ratio for:

$-$ A W$310$x$86,\backslash ($ L$=42\backslash$mathrm$\{$ft$\}\backslash ),$ one end pinned and the other fixed.

$-$ An HSS$178$x$127$x$7\mathrm{.}9,$ L $=18$ ft $,$ both ends fixed and the weak axis is braced at third points. written answer only