So you have a plan view with the following View Range:
which should only show elements in the shaded area:
Notice that the beams are above our view range. However in a plan view, you get this:
Why on earth are those beams showing up in that plan view? After taking a look at the properties, one might not see any issues. Upon inspecting a 3D view, the Analytical Lines don’t seem to be set correctly, however the Vertical Projection in the Properties is set to “Auto-detect”. So what gives?
The answer is at the top of the properties dialog. Notice that the beam’s Reference Level is grayed out and so is the Workplane. Now try and enter a value for the Start or End Level Offset and notice how the Workplane parameter disappears and the Reference Level is now editable. Just re-set the Start/End Level Offset to zero and alas, the analytical model will come to its senses and will start detecting the correct location. Bug? I dare say so but I’ll seek an official confirmation and post an update.
The interesting thing is that Structural Framing visibility is defined by where the analytical model is. I personally do not agree with this at all. Plan representation (in my opinion) should not be dictated by where an engineer decides he/she wants the analytical model to reside, but it should be purely based upon geometrical location. So make sure to either “touch” the Start/End Level Offset as described above if you’re only using the z-Direction Offset value, or use the other offsets instead!