posted by jean .
The New River Gorge bridge in West Virginia is a steel arch bridge 518m in length. How much does the total length of the roadway decking change between temperature extremes of -20.0C and 35.0 C? The result indicates the size of the expansion joints that must be built into the structure.
average linear expansion coefficient for steel: 11x10^-6
Delta Temp here is 55C, you are given L, and the coefficent. I assume the coefficent is in Celcius, not F.
i got the answer.