The T-beam is constructed as shown. If the nails can each support a shear force of $950 \mathrm{lb}$, determine the maximum shear force $V$ that the beam can support and the corresponding maximum nail spacing $s$ to the nearest $\frac{1}{8}$ in. The allowable shear stress for the wood is $\tau_{\text {allow }}=450 \mathrm{psi}$.