Question

You are given the job of designing a bridge that is to be made of concrete slabs that rest on a steel support frame. The total length of the bridge is 324 m, and you want to be sure that the expansion joints are sufficiently large. If the temperature increases by 22°C, what is the difference in the new lengths of the concrete and steel components of the bridge?

concrete	m
steel	m

Which of these components will have the largest increase in length? (The two components are considered expanded by the same amount if their expansions are within 5% of each other.)

concrete steel    

they both expand by the same amount

Answer 1