A steel section of the Alaskan pipeline had a length of 65.1 m and a temperature of 15.8 °C when it was installed. What is its change in length when the temperature drops to a frigid -31.2 °C?

Answer 1

Change in L = Lo * a*(T-To)
= 65.1 * 10^-5 * (-31.2-15.8) = -0.030597 m.