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View Full Version : Deleting short pipes around valves while preserving overall geometry



Amanda Haynes
February 28, 2017, 04:29 PM
As part of the process to delete short pipes on either side of valves and pumps (a relic of EPANET), short pipes and junctions between them were deleted and the pipes on either side of the deleted features were connected. If a junction was at a corner, that bend is not displayed anymore because the pipe containing that geometry has been deleted. To get the geometry back, the pipes that were deleted were merged with the pipes that got extended. The hope is that this shapefile could be used to update the geometry using the Exchange -> Import tool. When this tool is run, it creates areas where the vertices are drawn out of order even if the shapefile's vertices were drawn in the correct order. Is there a way for InfoWater to redraw the pipe's vertices in the correct order?

Alternatively, is there a better way to merge two pipes together while getting rid of a junction in between? This process needs to be done to at least 4,000 short pipes.

Patrick Moore
March 6, 2017, 11:51 AM
Amanda,

As this is a fairly complicated question, it may be easiest for you to send an email to support@innovyze.com and for us to set up a WebEx session to review your questions and help demonstrate a few options you may have to easily do what you are asking.

It can be tricky to update geometry this way as InfoWater still has to create two "hidden" nodes around each pump and valve so that it can display pumps and valves as a point type node element within InfoWater. When InfoWater sends the model to EPANET for solving each pump is converted to a "link" element between these hidden nodes and it determines the direction of the pump or valve based on the pipes connected to the pump or valve as drawn in InfoWater. If you export an InfoWater model to EPANET you can see the hidden nodes within EPANET that InfoWater creates. But you have to use caution if importing these elements back into the model as it can create issues for the pipeline geometry within the model software around pumps and valves.

However, there are a few easy fixes that can help delete these short pipes and reconnecting the pipes to the pumps under certain circumstances as long as the pipes remaining that will connect to the pump or valve are drawn in the correct direction. However, it would be best to look at your situation together in a WebEx to best provide recommendations on how best to do this.

When you email, can you please refer to this forum Post name in your email like "Forum Post Question: Deleting short pipes around valves while preserving Overall geometry"

Thank you.

Patrick Moore