The cross$-$section shown below is subject to a positive internal bending moment

$M=180kNm$ applied about the local $z-$axis of the section. The top flange has a

width $b=190mm$ and a thickness $a=14mm,$ the web has a thickness $t=10$

$mm,$ and the total section has a height $h=250mm.$

In your working express your centroidal location to the nearest tenth of a

millimetre and express the second moment of area for the cross$-$section to the

nearest millimetre.

Determine the maximum tensile normal stress in the cross$-$section due to the internal moment. Report your answer in units of MPa with one decimal place of accuracy.

Answer for part $1$

Determine the maximum compressive normal stress in the cross$-$section due to the internal moment. Report your answer in units of MPa with one decimal place of accuracy.

Answer for part $2$