Estimate the deflection at midspan of the truss in Figure P13.12, treating it as a beam of constant cross section. The area of both the top and bottom chords is \(10 \mathrm{in} .{ }^{2} . E=29,000 \mathrm{kips} / \mathrm{in} .{ }^{2}\). The distance between the centroids of the top and bottom chords equals \(9 \mathrm{ft}\).

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KKKKKCLLLLL 10 kips 2.5 kips 5 kips 5 kips 5 kips A 5 kips 5 kips 5 kips 10 @ 12' 120' 5 kips 5 kips 5 kips 2.5 kips top chord A = 10 in 7.P bottom chord A = 10 in.