A$.)$ Given that fy $=275$MPa, fo$\text{'}=26$MPa $($LWC$)$

calculate for the elastic stresses and design ratio if

$M=20knm$

B$.)$ Given that fy $=415$MPa,$f{c}^{\text{'}}=34$MPa $($NWC$)$

calculate for the elastic stresses and design ratio if

$M=120knm$