AutoCAD Civil 3D - Stormwater

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Active Member
bbissinger
Posts: 10
Registered: ‎07-13-2009
Message 1 of 3 (340 Views)

AutoCAD Civil 3D 2012 - Storm Sewers - Exceeding Pipe Capacity

340 Views, 2 Replies
06-14-2011 09:40 AM

Is it true that there is nothing in the program that tells us if we exceed pipe capacity or surcharge inlets?

 

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Matt.Anderson
Posts: 2,906
Registered: ‎05-13-2005
Message 2 of 3 (335 Views)

Re: AutoCAD Civil 3D 2012 - Storm Sewers - Exceeding Pipe Capacity

06-14-2011 03:03 PM in reply to: bbissinger

I would say, no, it's not true.  

 

The HGL values being drawn above the pipe is a sure sign you have a capacity issue.  When the HGL appears above the RIM elevations (in profile or numerically), that would indicate you have surcharged inlets.

 

There are a couple other locations that I recall that provide Design Capacity and Actual Flow values, including the reports.

 

If you are seeking additional visual cues that an inlet is flooded or a pipe is under pressure, check out Autodesk Storm and Sanitary Analysis.

 

 

Matthew Anderson, PE
Active Member
bbissinger
Posts: 10
Registered: ‎07-13-2009
Message 3 of 3 (331 Views)

Re: AutoCAD Civil 3D 2012 - Storm Sewers - Exceeding Pipe Capacity

06-14-2011 03:26 PM in reply to: Matt.Anderson

When you get a chance can you please provide me with the other locations for Design Capacity and Actual Flow Values? I am trying to get a good grasp on this and it seems to be difficult. We have started looking at SSA and are semi overwhelmed by all of the options and feel like there are so many options and we just don't understand how they interact with calculations. We are trying to dig into it though, but I am aware of the capacity feature in SSA.

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