Problem $4$:

A steel beam is constructed from

three plates as shown. $(1)$ What is the

maximum stress in the section due to a

$320$ kip$-$ft moment? $(2)$ If you had the

freedom to choose a different set of three

plates $($currently $28^{\text{'}\text{'}},2{11}^{\text{'}\text{'}},2{14}^{\text{'}\text{'}})$ to

carry the same $320$kip$-ft$ moment, what

would you choose? Why?