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Section 8 Thermal Flow (6 Marks) Question 16 A Bridge is 2650m long @ 20 C. The coldest day recorded was -4.0C and the hottest day was 45.3.C, which means the road base was at 61 C. Assume a = 1.2 x 10-5. AL = LoaAT Where:- AL = Change in length m ) Lo = Original length ( m ) a = Coeficent of linear expansion ( # ) AT = Change in temperature (. C) a. What is the minimum length of the bridge? Marks b. What is the maximum length of the bridge? Mar