note convert all units to metric before solving,

solve only LRFD method $($ the normal method $)$

change all material in problem to Fy $=300$ MA $20-$foot long column is pinned at the bottom and fixed against rotation but

free to translate at the top. It must support a service dead load of $110$ kips

and a service live load of $110$ kips.

a$.$ Select a W$12$ of A$992$ steel. Use the column load tables.

$1.$ Use LRFD$.$

$2.$ Use ASD.

b$.$ Select a W$18$ of A$529$ Grade $55$ steel. Use the trial$-$and$-$error approach

covered in Section $4\mathrm{.}6.$

$1.$ Use LRFD$.$

$2.$ Use ASDPA and Fu$=470$Mpa