nkg2,
No matter how hard we try, we cannot create a 3D drawing as WaterCAD (or it's database) is 2D so we have to be "creative" to display a varying Z coordinate in 2D plane. I think this is just a matter of "displaying" elements in the drawing because from hydraulic point you can easily model the vertical pipe or raised structure.
One can be little creative and draw, Isometric or Orthographic views of their network in 2D plane and model it. In the picture below, it does feel like P-20 is parallel to Z axis but it's purely parallel to Y axis and it does feel like it's vertical. If you know how to model a vertical structures then displaying things in the drawing is a pure "Art".
