Assign Junction Elevations Command - CivilGEO Knowledge Base

In GeoHECHMS, the user can assign elevations to the junctions, diversions, sources, and sinks elements by using the following commands:

Assign Junction Elevations
Assign Diversion Elevations
Assign Source Elevations
Assign Sink Elevations

The following sections describe how to assign elevations to the junctions, diversions, sources, and sinks.

Assigning Junction Elevations

The Assign Junction Elevations command is used to assign invert elevations to the selected junction(s). This command uses the elevation terrain surface to compute the invert elevation of an individual junction(s) with respect to the terrain surface present in the model.

Follow the steps below to use the Assign Junction Elevations command:

From the Input ribbon menu, click on the Routing Junctions dropdown menu and then select the Assign Diversion Elevations command.
The Assign Junction Elevations dialog box will be displayed.
The Select Junctions section lists the available junction(s) in the project. To select the desired junction(s), check the adjacent checkbox entry. Alternatively, the user can click the [Pick] button to manually select the junction from the Map View and then press the [Enter] key or right-click and select Done from the displayed context menu to complete the selection. The number of selected junction(s) will be displayed in the Total selected read-only field as shown below.
From the Extract Elevation Data section, select the desired Terrain elevation source from the list of supported surface types as shown below.
Note that if LandXML Data or TIN Surface is selected as the surface type, different options will be provided to specify additional elevation data information. In addition, if the selected terrain elevation source (e.g., LandXML Data) is not available in the model, the [Assign] button will get disabled (i.e., grayed out) as shown below.
From the Elevation grid layer dropdown menu, select an elevation layer contained within the project.
The user may also check the Apply elevation offset option before assigning the junction elevations. For example, the user can define a negative offset value to lower the junction for specific circumstances, such as in the case of a manhole bottom elevation.
After defining all the options, click the [Assign] button, and the software will compute and display the invert elevation for the selected junction(s).

Similarly, the user can also assign elevations to the selected diversion(s), source(s), and sink(s) using the Assign Diversion Elevations command, Assign Source Elevations command, and Assign Sink Elevations command.

Assigning Diversion Elevations

The Assign Diversion Elevations command is used to assign elevations to the selected diversion structure(s). This command uses the elevation terrain surface to compute the elevation of an individual diversion(s) with respect to the terrain surface present in the model.

Follow the steps below to use the Assign Diversion Elevations command:

From the Input ribbon menu, click on the Diversions dropdown menu and then select the Assign Diversion Elevations command.
The Assign Diversion Elevations dialog box will be displayed.

Selecting Diversions

The Select Diversions section lists the available diversion structure(s) in the project. Select the desired diversion structure(s) either by checking the adjacent checkbox entry with each diversion structure or manually from the Map View using the [Pick] button. Once finished, the number of selected diversion structure(s) will be displayed in the Total selected read-only field.

Extracting Elevation Data

The Extract Elevation Data section allows the user to extract the elevation profile from the selected elevation data source. By default, this section is enabled. If disabled, the options contained within this section will be unavailable (i.e., grayed out).

After defining all the options, click the [Assign] button, and the software will compute and display the elevation for the selected diversion structure(s).

Assigning Source Elevations

The Assign Source Elevations command is used to assign source elevations to the selected source(s). This command uses the elevation terrain surface to compute the elevation of an individual source(s) with respect to the terrain surface present in the model.

Follow the steps below to use the Assign Source Elevations command:

From the Input ribbon menu, click on the Sources dropdown menu and then select the Assign Source Elevations command.
The Assign Source Elevations dialog box will be displayed.

Selecting Sources

The Select Sources section lists the available source(s) in the project. Select the desired source(s) either by checking the adjacent checkbox entry with each source or manually from the Map View using the [Pick] button. Once finished, the number of selected diversion(s) will be displayed in the Total selected read-only field.

Extracting Elevation Data

After defining all the options, click the [Assign] button, and the software will compute and display the elevation for the selected source(s).

Assigning Sink Elevations

The Assign Sink Elevations command is used to assign sink elevations to the selected sink(s). This command uses the elevation terrain surface to compute the elevation of an individual sink(s) with respect to the terrain surface present in the model.

Follow the steps below to use the Assign Sink Elevations command:

From the Input ribbon menu, click on the Sinks dropdown menu and then select the Assign Sink Elevations command.
The Assign Sink Elevations dialog box will be displayed.

Selecting Sinks

The Select Sinks section lists the available sink(s) in the project. Select the desired sink(s) either by checking the adjacent checkbox entry with each sink or manually from the Map View using the [Pick] button. Once finished, the number of selected sink(s) will be displayed in the Total selected read-only field.