Import Routing Reach Alignment Command

In GeoSTORM software, the Import Routing Reach Alignment command allows the user to import any external geometry data necessary to construct routing reach alignment. Follow the steps below to use the Import Routing Reach Alignment command:

1. From the Input ribbon menu, click the Routing Reaches dropdown menu and select the Import Routing Reach Alignment command.
2. The Import Routing Reach Alignment dialog box will be displayed, as shown below.

The following sections describe how to use the Import Routing Reach Alignment command and interact with the above dialog box.

Selecting Reach File

The Select Reach File section allows the user to select the routing reach point file to be imported. The file needs to be in an ASCII text file format, with either commas, tabs, or spaces delimiting the data fields contained within each row of the file. The first row within the file that contains 3 floating point numbers is used to start the import routing reach process. Whenever a blank line is encountered within the data file, or the direction between three adjacent points changes too much, the software interprets this as the start of a new routing reach. The following survey file formats are supported:

• EN (Easting, Northing)
• ENZ (Easting, Northing, Elevation)
• ENZD (Easting, Northing, Elevation, Description)
• LLZ (Lat-Long, Elevation)
• LLZD (Lat-Long, Elevation, Description)
• NE (Northing, Easting)
• NEZ (Northing, Easting, Elevation)
• NEZD (Northing, Easting, Elevation, Description)
• PEN (Point, Easting, Northing)
• PENZ (Point, Easting, Northing, Elevation)
• PEND (Point, Easting, Northing, Description)
• PENZD (Point, Easting, Northing, Elevation, Description)
• PLLZD (Point, Lat-Long, Elevation, Description)
• PNE (Point, Northing, Easting)
• PNEZ (Point, Northing, Easting, Elevation)
• PNED (Point, Northing, Easting, Description)
• PNEZD (Point, Northing, Easting, Elevation, Description)
• PNT (XYZ Survey Alignment Data)
• PTS (XYZ Survey Alignment Data)

The software will attempt to determine the file format based upon the file extension. However, the user can change the file format to be used after the file is selected. For reference, Easting = X coordinate and Northing = Y coordinate.

Point File Preview

This section shows the first 100 lines contained within the survey point file. It allows the user to see the contents of the survey point file and allows the user to change the file format to be used for importing based upon previewing the contents. After changing the file format, the column headings change in the Point File Preview section.

Reach Naming Specifications

This section allows the user to define the naming specifications to be used for the imported routing reaches.

The different routing reach naming formats present in this section are as follows:

1. Routing reach ID prefix: This option allows a prefix to be added to the start of the routing reach ID.
2. Routing reach ID digits: This option permits the specification of a set number of digits to use for the routing reach ID. For example, using 3 digits causes the routing reach ID to be of the format 001, 002, 003, and so on as new routing reaches are created.
3. Next available routing reach ID: This option defines the next routing reach ID number to be used.
4. Routing reach ID increment: This option defines the increment to use when numbering routing reach. The default value is 1.
5. Routing reach ID suffix: This option allows a suffix to be added to the end of the routing reach ID.
6. Routing reach ID preview: This read-only field provides a preview of the routing reach naming specifications defined above.

Assign Reach Slope & Downstream Invert Elevation

This section allows the user to assign the slope and invert elevation to the routing reach using a terrain model.

Note: Define this section before importing routing reaches so that the slope and invert elevations can be assigned.

Terrain Elevation Source

Depending upon the type of terrain elevation source selected, the contents of the Assign Reach Slope & Downstream Invert Elevations section changes to specify additional elevation data information. The Terrain elevation source dropdown combo box supports the following surface types:

• Elevation Grid
• LandXML Data
• TIN Surface

Elevation Grid

If the user selects Elevation Grid as the terrain elevation source, the contents of the Assign Reach Slope & Downstream Invert Elevations section changes, as shown below.

The following option is displayed when 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.

LandXML Data

If the user selects LandXML Data as the terrain elevation source, the contents of the Assign Reach Slope & Downstream Invert Elevations section changes, as shown below.

The following options are displayed when 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.

TIN Surface

If the user selects TIN Surface as the terrain elevation source, the contents of the Assign Routing Reach Slope & Downstream Invert Elevations section changes, as shown below.

The following options are displayed when 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.

Importing Routing Reach Alignment

Once data have been defined in the Import Routing Reach Alignment dialog box, click the [OK] button and the software will import the external geometry data to construct the routing reach alignment.