The reinforced concrete beam shown below $(b=340mm,h=600mm,c=70mm$ and $db=26mm)$ is subjected to a positive

bending moment of $55$ kN$.$m$.$ Knowing that the modulus of elasticity is $26$ GPa for the concrete and $200$ GPa for the steel, determine

$($a$)$ the stress in the steel, $($b$)$ the maximum stress in the concrete.

Select the closest one to your solution: