Has anyone found decent success with using the Pressure Pipe Network in Civil3D 2013? I just recently began developing an Apputenace library for all the parts we use that were not included with the program. I have run into a few big issues that could prevent our firm from using this potentially useful tool. One issue, does the PPN posses the ability to create structures like manholes? This could be a really break point for using it to do a sewer line. Another, how well does it interact with multiple surfaces? If I have two surfaces butted up to one another how to a get a PPN from point A on surface 1 to point B on surface 2 and have that PPN respond at the correct bury depth while creating the correct fittings? As I experiment more this this tool I feel as if there are way more questions about what it can and can't do compared to what a regular pipe network does. Anyone have thoughts?