StormCAD-pipes

Question

For pipes at angle points (horizontally) or slope changes (vertically) , should I treat those locations as "transition" or"cross section" or it doesn't matter when you run the system?

Akshaya Niraula · Accepted Answer

Hi Nigel, 
 From element point of view, you have little more options to enter in a manhole Vs a transition. From the hydraulics point both will calculate the headloss. Now, cross-section is a different element generally it represents the geometry of a channel/gutter. 
 But, when it doubt, match the system out! So, however system is built, try to model the same way. If you find a manhole in real system, place a manhole. 
 Here's a quick comparison of Manhole and Transition: 
 HTH,

Jesse Dringoli · Answer

If you are simply trying to model a bend in the pipe where the slope changes, you could indeed use the transition node. This is like the manhole, but is enclosed (whereas the manhole has a structure that extends vertically) . 
 To explain a bit more, the below Support Solution has been logged: 
 communities.bentley.com/.../12703.cross-section-vs-transition-for-modeling-slope-or-size-change.aspx