The most important thing is to apply and orient the forces correctly. To do this, it is necessary to swap the column and beam in the input data as shown in the figure (modified Window 1.6). The example shown applies the following in Window 1.6: The left beam becomes a column, the top column becomes the left beam, and the bottom column becomes the right beam.
Furthermore, it is necessary to pay attention to the local member coordinate system, so that the forces have the right signs. In the example, the member axes are rotated accordingly until the orientations comply with the orientations in Window 1.6. At last, the angle αo must be set to -14.04° in the example before creating the first "preliminary design of sides".
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