Why does the shear force in one part of the column is flipped?
Hi, I'm doing an statical analysis of a 2D frame. I'm verifying the bending moment, the shear force and the displacement for a column but in some part of it the shear force is flipped (as in the image below). The column is the one with the "B" Fixed support. As you can see in the image, the shear force on the step should be negative, not positive. How can i change it? I've the same problem for another column but in that case is the displacement that is flipped only for the second floor column. Can someone pls help me?