$4\mathrm{.}7\mathrm{.}11$ The frame shown in Figure P$4\mathrm{.}7-11$ is unbraced against sidesway. Relative moments of inertia of the members have been assumed for preliminary design purposes. Use the alignment chart and determine $K_x$ for members $AB,BC,DE,$ and $EF.$

FIGURE P$4\mathrm{.}7-11$