$5-63*$ Nine$(3)/(4)-$in$.-$diameter steel $($E$=30,000$ksi$)$E$=4500$

ksiP of $150$ kip was applied to the pier, the temperature in$-$

creased $100\backslash$deg F$.$ The coefficients of thermal expansion for steel

and concrete are $6\mathrm{.}6(10^(-6))/(\backslash$deg $)$F and $6\mathrm{.}0(10^(-6))/(\backslash$deg $)$F$,$ respectively.

Determine a$.$ The normal stresses in the concrete and in the steel bars after the temperature increases.

b$.$ The change in length of the pier resulting from the combined effects of the temperature change and the load.

Figure P$5-63$