SI units) A bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature (assumed 20 ° C ). Expansion joints will be provided to compensate for the change in length in the girders as the temperature varies. Each expansion joint can compensate for a maximum of 20 mm of change in length. From historical records it is estimated that the minimum and maximum temperatures in the region will be − 35 ° C and 40 ° C , respectively. Determine (a) the minimum number of expansion joints required and (b) the length that each bridge section should be fabricated.
SI units) A bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature (assumed 20 ° C ). Expansion joints will be provided to compensate for the change in length in the girders as the temperature varies. Each expansion joint can compensate for a maximum of 20 mm of change in length. From historical records it is estimated that the minimum and maximum temperatures in the region will be − 35 ° C and 40 ° C , respectively. Determine (a) the minimum number of expansion joints required and (b) the length that each bridge section should be fabricated.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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(SI units) A bridge to be fabricated of steel girders is designed to be 500 m long and 12 m wide at ambient temperature (assumed
20
°
C
). Expansion joints will be provided to compensate for the change in length in the girders as the temperature varies. Each expansion joint can compensate for a maximum of 20 mm of change in length. From historical records it is estimated that the minimum and maximum temperatures in the region will be
−
35
°
C
and
40
°
C
, respectively. Determine (a) the minimum number of expansion joints required and (b) the length that each bridge section should be fabricated.
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