Trace Solver

The Trace Solver includes tools for tracing sewer, storm, and water lines. This provides a quick and easy way to select groups of pipes to create subsets, or work orders. This tool works without an ArcInfo license or ArcGIS network developed. These tools do not use the Trace solvers that are built into ArcGIS and therefore can run with ArcView licenses.

Click on the Trace Solver Tool . The Following dialog will appear:
Select a trace from the drop down box:
The available traces are described below:
- Upstream/Downstream Trace – Selects all lines upstream or downstream of the line that is clicked on (includes the line that was clicked on).
- Upstream/Downstream Distance Trace – The dialog expands prompting for a distance to trace. Traces upstream or downstream until that distance is met or exceeded. The line that is clicked on is included in the distance calculation. It does not matter where users click on the initiating line; the system will use the full line length in the calculation.
- Upstream/Downstream Segment Trace – The dialog expands prompting for the number of segments to trace. Traces upstream or downstream until the specified number of segments are selected. The line that is clicked on is included in the segment count.
Click Trace.
The mouse cursor will change to crosshairs and the user then click a point along the sewer/storm pipe feature class where they want the trace to begin. This will start the trace and when completed the following prompt will appear and the map display will be refreshed to zoom to the extent of the selected sewer/storm pipes.
Users can continue to use the tool to perform additional traces by clicking on a point along the sewer/storm pipe feature class.

Click on the Trace Solver Tool . The Following dialog will appear:
Select "Water Isolation Valve Trace" from the drop-down list.
At this point several options are given.
- Water Line Trace Options: Place a check next to the statuses that indicate a valve can NOT be closed. If status' a re checked then the tool will assume that all isolation valves can be turned off.
- Check the "Query Lucity database to determine if the valve is an isolation valve and the operation status. This allows agencies to keep this information only in Lucity if it is not stored in the feature class.
- Subset Option: Check to create a subset from the resulting selection. When this option is checked, the field to the right will be enabled to enter a subset name.
- Hydrant Options:
  - Do not select hydrants - selects no hydrants
  - Select hydrants using a pipe # assigned to hydrant - checks which pipes were selected in the trace and checks the hydrant records in Lucity to see if they are attached to those pipes.
  - Select hydrants within a specified distance from affected pipes - performs a selection of hydrants within a distance of the selected pipes
    Note: Selecting by pipe number assigned to the hydrant is the most accurate method of selecting hydrants affected by a shutoff.
Click Trace
The mouse cursor will change to cross hairs and the user then click a point along the sewer/storm pipe feature class where they want the trace to begin. This will start the trace and when completed the following prompt will appear and the map display will be refreshed to zoom to the extent of the selected water assets.
Users can continue to use the tool to perform additional traces by clicking on a point along the water pipe feature class.

Sewer/Storm Upstream/Downstream Trace	Selects all lines upstream or downstream of the line that is clicked on (includes the line that was clicked on).
Sewer/Storm Upstream/Downstream Distance Trace	The dialog expands prompting for a distance to trace. Traces upstream or downstream until that distance is met or exceeded. The line that is clicked on is included in the distance calculation. It does not matter where users click on the initiating line; the system will use the full line length in the calculation.
Sewer/Storm Upstream/Downstream Segment Trace	The dialog expands prompting for the number of segments to trace. Traces upstream or downstream until the specified number of segments are selected. The line that is clicked on is included in the segment count.
Water Isolation Valve Trace	This is used to find the closest water system shutoff points near a specific location. It selects all water pipes upstream and downstream until it reaches a water isolation valve. It also selects the isolation valve, and can select any related hydrants.



Step 1: Choose a trace type		Use this drop down to select what type of trace should be performed.
Step 2: Selection Options		The trace tool selects features during the trace. This option controls how the trace tool will react with any currently selected features. If it is set to Clear Selection it will un-select any currently selected features. If it is set to Add to Current Selection it will add pipes from the trace to the current selection.
Step 3: Water Line Trace Options		These options only appear if the Water Isolation Valve Trace is selected in Step 1. This trace decides which valves can be used to shut water off based on whether they are marked as an isolation valve and whether their status is considered "close-able." Use the grid to the right to select any statuses that are not considered close-able.
	Query the Lucity Database...		Mark this option if the isolation valve and status information is stored in Lucity instead of the geodatabase.
Step 4: Subset Option		Mark this box to create subsets of the selected water pipes, valves and hydrants. Enter a name for the subsets in the provided field.
Step 5: Hydrant Options		This allows users to select whether they want hydrants selected and how. If the third option is selected enter a distance in the provided field. All hydrants within that distance of a selected pipe will be selected as well.