Q$1.$ Given: $f_c^{\text{'}}=5000$ psi, Grade $60$ rebars for such cross section as shown in Fig. $1.$

Determine: a$)$ what minimum steel area

b$)$ Strain in rebars

c$)$ what types of failure mode

d$)$ If the cross section satisfies the ACI code requirement, what is nominal flexural

strength $M_n$ and design strength, $M_n$

Fig. $1$ cross section of the beam