The members and of 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 relative to joint along the direction of the truss, is

The members and of steel truss shown in the figure below are subject

1.	The members and of 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 relative to joint along the direction of the truss, is
A.	0.255
B.	0.589
C.	0.764
D.	1.026
Answer» D. 1.026

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The members and of 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 relative to joint along the direction of the truss, is

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