The concrete post (Ec = 3.6 x 10 psi and ac = 5.5 3 10-

QUESTION:

The concrete post \(\left(E_{c}=3.6 \times 10^{6} \mathrm{psi} \text { and } \alpha_{c}=5.5 \times 10^{-6} /{ }^{\circ} \mathrm{F}\right)\) is reinforced with six steel bars, each of \(\frac{7}{8} \text {-in. }\) diameter \(\left(E_{s}=29 \times 10^{6} \mathrm{psi} \text { and } \alpha_{s}=6.5 \times 10^{-6} /{ }^{\circ} \mathrm{F}\right)\). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of \(65^{\circ} \mathrm{F}\).