I'm doing pipe modeling and this problem keeps happening while I've checked it using the network navigator and using downstream tracing like the picture above and can't find which part is not connected. Please what should I do?
Hello Farhan,
I think that there is no "reservoir" or "tank" element present upstream of this network. You need a "reservoir" or "tank" which sets the starting hydraulic grade for analysis. See this article which explains troubleshooting this issue: Node / Pipe is not connected to, or is isolated from, a boundary (reservoir or tank) user notification
I also noticed that you are using an older version of WaterCAD (V8i) which is no longer supported. Please upgrade to the latest version of WaterCAD i.e. the CONNECT Edition (v 10.03.05.05) for continued support. See this article for reference: What's New in WaterGEMS, WaterCAD, and WaterOPS CONNECT Edition Update 3 (10.03.05.03 & 10.03.05.05)
Hope this helps.
Regards,
Yashodhan Joshi
thanks yasodha but i have tank element at this network
Then check the connectivity with the tank. There must be some element which is not connected to the tank.
Check the Tank's minimum, maximum and initial elevations. If your initial water level is either below the minimum or above the maximum the tank will be disconnected from the system.
If you are using pump controls based on tank water levels, check that your on-off levels are within the tank max & min levels. I usually set my tank control levels well above the minimum and well below the maximum levels.
You may want to start your analysis with a much larger tank than you actually have just to try and locate the source of your disconnection problem. If you put in a larger tank and your run is successful then you know the tank is the problem.
Good luck!
Answer Verified By: Farhan Putra
If the suggestions from Yashodhan and Gary do not help, we may need to see a copy of the model files.
Scott