In GeoSTORM, the Recompute Pipe Properties command allows the user to recompute pipe properties, such as pipe lengths, pipe slopes, and maximum and minimum pipe cover based upon connected manholes.
Follow the steps below to use the Recompute Pipe Properties command:
- From the Input ribbon menu, select the Recompute Pipe Properties command from the Stormwater Pipes dropdown menu.
- The Recompute Pipe Properties dialog box will be displayed as shown below.
The following sections describe how to use the Recompute Pipe Properties command and interact with the above dialog box.
Selecting Pipes
The Select Pipes section includes a data grid table that lists all the pipes contained within the current scenario along with their pipe lengths, slopes, and maximum and minimum pipe covers. This section allows the user to select single or multiple pipes defined in the project for computing pipe parameters.
The user can select or deselect any pipe by checking and unchecking the checkbox corresponding to each pipe. If a pipe is already selected on the Map View before running this command, the same pipe will be shown selected within the table. The user can also use the checkbox contained within the column header to select or deselect all the pipes.
Alternatively, the user can click the [Pick] button to select pipes from the Map View. On clicking the [Pick] button, the Recompute Pipe Properties dialog box will temporarily disappear, and a prompt will be displayed on the status bar instructing the user to select the pipes on the Map View. After selecting the pipes, press the [Enter] key or right-click and choose Done from the displayed context menu. The dialog box will be redisplayed, and the total number of selected pipes will be displayed in the Total selected read-only field.
Note that the user can select multiple pipes from the Map View before running the Recompute Pipe Properties command by pressing the [Ctrl] key.
Pipe Properties
This section is used to define the elevation data source and other parameters to be used for recomputing pipe properties.
Terrain Elevation Source
Depending upon the terrain elevation source type selected, different options are provided to specify additional detail and elevation data information.
The Terrain elevation source dropdown combo box supports the following surface types:
- CAD Drawing
- Elevation Grid
- GIS Contours
- LandXML Data
- Terrain Surface
- TIN surface
CAD Drawing
If the user selects CAD Drawing as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following options are displayed when CAD Drawing is selected as the terrain elevation source:
- CAD drawing layer
This dropdown combo box allows the user to select the CAD drawing layer available in the project.
- Drawing layers
Clicking the [Define] button adjacent to the Drawing layers entry displays the CAD Drawing Layers dialog box allowing the user to define the properties of the drawing layers.
Elevation Grid
If the user selects Elevation Grid as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following option is displayed when the Elevation Grid is selected as the terrain elevation source:
- Elevation grid layer
This dropdown combo box allows the user to select the elevation grid layer available in the project.
GIS Contours
If the user selects GIS Contours as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following options are displayed when GIS Contours is selected as the terrain elevation source:
- GIS polyline layer
This dropdown combo box allows the user to select the GIS polyline layer type.
- Elevation attribute
This dropdown combo box allows the user to select the elevation attribute type.
LandXML Data
If the user selects LandXML Data as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following options are displayed when the LandXML Data is selected as the terrain elevation source:
- TIN surface layer
This dropdown combo box allows the user to select the TIN surface layer type.
- TIN surface
This dropdown combo box allows the user to select the TIN surface type.
Terrain Surface
If the user selects Terrain Surface as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following option is displayed when the Terrain Surface is selected as the terrain elevation source:
- TIN surface layer
This dropdown combo box allows the user to select the TIN surface layer type.
TIN Surface
If the user selects TIN Surface as the terrain elevation source, the content of the Pipe Properties section changes as shown below.
The following options are displayed when the TIN Surface is selected as the terrain elevation source:
- TIN surface layer
This dropdown combo box allows the user to select the TIN surface layer type.
- TIN surface
This dropdown combo box allows the user to select the TIN surface type.
After selecting the terrain elevation source, the user can check the checkbox of the following properties to be recomputed for the selected pipes.
- Pipe length
This checkbox option is used to compute pipe length.
- Pipe slope
This checkbox option is used to compute pipe slope based upon the pipe invert elevations.
- Maximum pipe cover
This checkbox option is used to compute the maximum ground cover measured from the top of the pipe (crown) along the pipe length.
- Minimum pipe cover
This checkbox option is used to compute the minimum ground cover measured from the top of the pipe (crown) along the pipe length.
Computing Pipe Properties
Once the data have been defined in the Recompute Pipe Properties dialog box, click the [Compute] button. The software will then recompute the pipe properties for the selected pipes.