topic Re: water web isolation tool - Valve Classification and Barriers in Water Utilities Questions

water web isolation tool - Valve Classification and Barriers

YaneevGolombek — Thu, 25 Aug 2016 16:25:58 GMT

I just got this tool working for my organization and so far it is well received!

A couple question about the water web isolation tool.

Since the tool isolates affected customers, it would be helpful to notify all customers affected when an outage occurs. In the clip below, the circled areas are affected by the break since the lines run down a cul de sac. Yet the isolated stops at the beginning of the cul de sac. Is there away to easily code these valves so the tool will included these lines/customers in these circumstances?

Also, I'm a little unclear about the purpose of the Barrier tool. Per the second clip, the only thing they appear to do is expand the isolation area polygon, yet features inside are not selected. What is the main purpose of the Barrier sub-tool?

Thanks.

Re: water web isolation tool - Valve Classification and Barriers

Anonymous User — Thu, 25 Aug 2016 20:21:56 GMT

Thank you for your question Yaneev Golombek‌. I am including my colleague Mike Miller who would possibly be able to answer your question.

mmiller-esristaff‌ - can you help with this question?

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Sat, 27 Aug 2016 00:50:16 GMT

The trace is a simple find connected and does not have advance logic to find dead end areas, like a cul-de-sac. If you are looking for a tool that determines this, we have a toolset for ArcMap that does this.

Barriers are useful if you have pinch-able pipe, like in a gas system.

Re: water web isolation tool - Valve Classification and Barriers

YaneevGolombek — Mon, 29 Aug 2016 13:53:36 GMT

Thanks for the response. Which ArcMap tools accomplish this? Thanks.

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Mon, 29 Aug 2016 15:29:56 GMT

You can find the toolset here: http://solutions.arcgis.com/utilities/water/help/network-editing/

Re: water web isolation tool - Valve Classification and Barriers

YaneevGolombek — Fri, 23 Sep 2016 20:01:44 GMT

Michael,

Another question, if you have an answer. The tool has a "skip location" command for bypassing valves. I see it in webapp widget the tool configuration and it works via the arcmap model when running in ArcMap or publishing to the server. However, When running the tool online after publishing, I do not see it. I only see the flags and barriers. Is it possible to bring the "skip location" tool/icon into this window as well? Thanks.

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Fri, 23 Sep 2016 20:05:33 GMT

You can select a valve to skip it, it is part of the valve pop up. It is not exposed as a tool to manually place them. You could extend the model to provide another feature set input to do this though.

Re: water web isolation tool - Valve Classification and Barriers

TL2 — Mon, 28 Aug 2017 15:36:16 GMT

How do we add this to our own App. Is it done in the web map?

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Mon, 28 Aug 2017 15:38:46 GMT

When you configure the widget, you set the valve layer as skip-able.

Re: water web isolation tool - Valve Classification and Barriers

GregHorch — Mon, 28 Sep 2020 17:38:25 GMT

Hi Michael - Are there plans to enhance the Web Isolation Trace to handle the advanced logic for dead ends in a geometric network?

Thank you.

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Mon, 28 Sep 2020 17:55:50 GMT

Greg,

The Water Outage solution includes the improved logic for dead ends. https://solutions.arcgis.com/water/help/water-outage/

Re: water web isolation tool - Valve Classification and Barriers

GregHorch — Mon, 28 Sep 2020 21:13:42 GMT

I am trying to get a more complete outage area polygon and summary data (count of services effected etc). The neighborhood depicted in the attached image is fed from only one direction due to some closed pressure boundary valves at the SE corner.

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Mon, 28 Sep 2020 21:44:09 GMT

You can set the trace up to load barriers for closed valves. Take a look at the system_barriers parameter. Are you using this?

https://solutions.arcgis.com/water/help/water-outage/tool-reference/generate-web-isolation-trace-toolbox.htm

Re: water web isolation tool - Valve Classification and Barriers

GregHorch — Wed, 21 Oct 2020 17:20:22 GMT

Thank Michael. Properly setting up the system barriers and evaluating paths to controllers did the trick. This did come with a tremendous performance hit in a large network (80K valves, 1500 closed valves, 150K mains, 620K service lines) on SQL server database. Performance is much better in a fgdb stored on the ArcServer box with isolation traces through WAB taking just under 4 minutes. Does this sound about right?

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Wed, 21 Oct 2020 17:23:54 GMT

That is a lot of barriers to load from the database. Are those valves always closed? I would have to look at the code, but there maybe a way to cache them too, to improve performance.

Re: water web isolation tool - Valve Classification and Barriers

GregHorch — Wed, 21 Oct 2020 18:09:26 GMT

I would say they are normally closed, but not always closed. Could it be as simple as setting Enabled to False for those valves?

Re: water web isolation tool - Valve Classification and Barriers

MikeMillerGIS — Thu, 22 Oct 2020 08:36:33 GMT

I looked over the code, you would have to modify it to load barriers from a static class. It would help to enable debug logging and get more information about where the slow down is occurring. You will need to modify the pyt. In line 32, change logger.setLevel('INFO') to logger.setLevel('DEBUG'). Run the pyt in ArcMap. There should be much more verbose messaging. Can you post the results or email them to me at mmiller@esri.com