# Discussion: beam under bending

Consider a beam section under bending with $M_u=206 kNm$. Let $f_{ck}=25MPa; f_{yk}=500MPa$. Per EC2, i can find the reinforcement area about $A_s=1012mm^2$ .

But if this section with $A_s=1012mm^2$ under this $M_u=206 kNm$, the question is simple, what will be the axial strain $\epsilon$ of the section? $\epsilon_c=?; \epsilon_s=?$.