Problem $2(30$ pts$)$: Indeterminate Structures $-$ Braced Frames with Gravity and Lateral Loads. For the chevron braced system under the lateral and gravity loads, estimate the internal forces in each brace $($axial$),$ beam $($moment and shear$)$ and column $($axial$)$ in order to perform the preliminary design of the members.

Problem $3(30$ pts$)$: Indeterminate Structures $-$ Approximate Methods of Analysis. For the frame below, determine the approximate axial forces, shear and moments for all the members, by using the portal method.