Kobane Bridge is made of concrete (cement) and it has a length of 550 m. a) Calculate the change in the length of this bridge if the temperature changes from -5 to 49 C. Linear Expansivity of Concrete = 14.5 x 10-6 m/(m.K) b) If you replace the concrete with clay, would you expect the change in length to increase, decrease or remain the same. The linear expansion coefficient of clay is 3.4 x 10-5 m/(m.K)