A copper transmission line 12.7 mm diameter is stretched between two points 300 m apart at the same level, with a tension of 5 kN when the temperature is 35°C. It is necessary to define its limiting positions when the temperature varies. Making use of the corrections for sag, temperature, and elasticity normally applied to base line measurements in catenary, find the tension at a temperature of -15°C and the sag in the two cases. Young's modulus for copper is 68950 MN/m², its density 8890 kg/m³ and its coefficient of linear expansion 15 x 10 °C.

A copper transmission line 12.7 mm diameter is stretched between two points 300 m apart at the same level, with a tension of 5 kN when the temperature is 35°C. It is necessary to define its limiting positions when the temperature varies. Making use of the corrections for sag, temperature, and elasticity normally applied to base line measurements in catenary, find the tension at a temperature of -15°C and the sag in the two cases. Young's modulus for copper is 68950 MN/m², its density 8890 kg/m³ and its coefficient of linear expansion 15 x 10 °C.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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