The moment of inertia of the girder in Figure P7.24 is twice that of the column. If the vertical deflection at \(D\) is not to exceed \(1 \mathrm{in}\). and if the horizontal deflection at \(C\) is not to exceed \(0.5 \mathrm{in}\)., what is the minimum required value of the moment of inertia? \(E=29,000 \mathrm{kips} / \mathrm{in}^{2}\). The elastomeric \(\operatorname{pad}\) at \(B\) is equivalent to a roller.

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B 21 6 I a 21 12' D 9' 4 kips