(a) Compute the vertical deflection of joint \(D\) produced by the 30-kip load in Figure P8.13.

For all bars, area \(=2 \mathrm{in} .^{2}\), and \(E=9000 \mathrm{kips} / \mathrm{in}^{2}{ }^{2}\).

(b) Assume that the truss is not loaded. If bar \(A E\) is fabricated \(\frac{8}{5}\) in. too long, how far to the right must the roller at \(B\) be displaced horizontally so that no vertical deflection occurs at joint \(D\) ?

Transcribed Image Text:

P = 30 kips B 9' 12' E 12'