Determine $($approximately$)$ the support reactions at the base of the columns of the frame shown and draw the shear and mament diagrams for the frame $($girder and coliamos$)$ duc to the applied losd. Assume the supports are fixed, inflection paints exist at mid span of each member, and the base shear fraction of the total horisontal losd is $\%$ at A and $C$ and $\%$ at $B.$ Use the portal method of analysis.