Standard I section properties: $I_{yy}=218c{m}^4$

Maximum permissible stress of material used ${}_{\text{m}\text{a}\text{x}}=190\frac{N}{m}{m}^2$

A strengthening plate with dimensions $B=70mm$ and $t=10mm$ has been added as shown in the above sketch

$($Please include appropriate unit next to your answer and state your answer in $4$ significant figures.

Calculate the total lyy for the compound section.

$I_{\text{T}\text{o}\text{t}\text{a}\text{l}}=$

Calculate F limited by stress at mid$-$span $($point C$).$

$F=$

Calculate F limited by stress at end of plate $($point $D/$E $).$

$F=$

What is the maximum capacity of the compound strengthened beam.

$F_{\text{m}\text{a}\text{x}}=$