Hi! Just discovered this forum, and it's like the best ever!! Anyway, I do have a question. In statics I hear about an "axial member" of a structure. This means that the force in this member works along the rod or wire or whatever, so that the direction of the force need not to be determined. What I'm now wondering about, is when this is the case and when it is not. How can I tell? Is it usually obvious just by looking at the structure?