Question: Problem 4 [ 2 0 points ] The truss structure shown in the figure below is made of A 3 6 steel. Each truss has

Problem 4
[20 points]
The truss structure shown in the figure below is made of A36 steel. Each truss has a cross-sectional area of 400mm2. Use Castigliano's theorem to calculate the horizontal displacement of joint B.
Problem 4 [ 2 0 points ] The truss structure

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