In Problems P10.12, take advantage of symmetry to simplify the analysis by slope deflection.

(a) Determine the member end moments for the rectangular ring in Figure P10.12, and draw the shear and moment curves for members \(A B\) and \(A D\). The cross section of the rectangular ring is \(12 \mathrm{in.} \times 8 \mathrm{in}\). and \(E=3000 \mathrm{kips} / \mathrm{in} .^{2}\).

(b) What is the axial force in member \(A D\) and in member \(A B\) ?

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B A 8 w = 2 kips/ft 8 8 w = 2 kips/ft 12' C 8. D 6'