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The members EJ and IJ of a steel truss shown in the figure below are subjected to a temperature rise of 30°C. The coefficient of thermal expansion of steel is 0.000012 per °C per unit length. The displacement (mm) of joint E relative to joint H along the direction HE of truss, is
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- 0.255
- 0.589
- 0.764
- 1.026
Correct Option: D
Expansion = 3000 √2 × 0.000012 × 30 = 1.527 mm
Expansion of EJ = 1.03 mm.
