Question 14.81: Determine the horizontal displacement of joint C on the trus...

Determine the horizontal displacement of joint C on the truss. Each A992 steel member has a cross-sectional area of  3 in^2.

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member n N L Nnl
AB 1.333 18 48 1152
BC 1 15 36 540
BD -1.666 -25 60 2500
CD 0 0 48 0
\sum = 4192
1 \cdot \Delta_{C_{h}} =\Sigma \frac{n N L}{A E} \\\Delta_{C_{h}} =\frac{4192}{(3)(29)\left(10^{3}\right)}=0.0482 in
2

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