Do you need to model pressure pipelines in Civil 3D, show a design profile, and represent the crossings on other Profiles and on Cross Sections?  If so, you have come to the right post.  Check out the two short videos after the jump for a quick and simple process that gives you a complete and dynamic solution.

(P.S. Sorry about the use of YouTube.  The videos were too large to upload to this site.)

Creating the Pipe Assembly (7.25 min video)

Creating the Pipeline Corridor and Projecting Crossings (9.5 min video)

Other links on the subject:

Wastewater: Tools to Help Layout Sanitary Pipelines

Using a Pipe Network Tools to Create a Rising Main

Forcemains, and Gas Lines and Water Mains (Oh My!)