The GeoSTORM software allows the user to model roadway crossings consisting of single or multiple bridge openings and culverts. Roadway crossings can also be drawn directly inside 2D flow areas to model 2D bridges. The user can view and edit all parameters related to these roadway crossings in one editable data grid table using the Roadway Crossing Table Edit command.
Follow the steps below to use the Roadway Crossing Table Edit command:
- From the Input ribbon menu, click the Roadway Crossings dropdown menu and select the Roadway Crossing Table Edit command.
- The Roadway Crossing Table Edit dialog box will be displayed.
The following sections describe how to use the Roadway Crossing Table Edit command and interact with the above dialog box.
Selecting Storm Results
In the Select Storm Results section, the Storm result to display dropdown combo box allows the user to select the storm frequency whose result is to be displayed.
Note that the Select Storm Results section is only available when either the Modified Rational, Rational Method, or Dekalb Rational Method is selected as the hydrology analysis engine in the Scenario Manager dialog box. Otherwise, this section is unavailable. Refer to this article in our knowledge base to learn more about hydrology analysis engines supported by GeoSTORM.
Roadway Crossing – Culvert Parameters
The following panels are available in the Roadway Crossing – Culvert Parameters section:
- Roadway Crossing Data
- Result Data
Roadway Crossing Data
This panel contains editable data grid columns listing roadway crossing parameters present in the current scenario.
The following roadway crossing parameters are provided in the data grid columns:
- Roadway Crossing ID:
This editable column defines all roadway crossing IDs contained in the current scenario. Note that this editable column is also shared with the Result Data panel. - Culvert Set ID:
This editable column lists the set of culverts defined for the corresponding roadway crossings. Note that the culvert set IDs must be unique for the defined roadway crossings. - Culvert Shape
This column having a dropdown combo box allows the user to select a culvert shape. The following culvert shapes are available:- Box
- Circular
- Ellipse
- Arch
- Pipe Arch
- Culvert Diameter or Height:
This editable column defines the diameter of a circular culvert or the height of other types of culverts. - Culvert Width or Span:
This editable column defines the width or span of the culvert. - Culvert Length:
This editable column defines the length of the culvert. - Inlet Invert Elevation:
This editable column defines the culvert invert elevations on the upstream (inlet) ends. Clicking the […] button available in the editable columns allows the user to pick the culvert inlet invert elevation from the Map View. - Outlet Invert Elevation:
This editable column defines the culvert invert elevations on the downstream (outlet) ends. Clicking the […] button available in the editable columns allows the user to pick the culvert outlet invert elevation from the Map View. - Manning’s Roughness:
This editable column defines Manning’s roughness. Clicking the […] button at the column header displays the Manning’s Roughness lookup dialog box, as shown below.
Result Data
The data grid columns in this panel list correspond to output results for roadway crossings present in the current scenario.
The following roadway crossing result parameters are provided in the data grid columns:
- Culvert Slope:
This read-only column displays the culvert slope. - Peak Flow Rate:
This read-only column displays the peak flow rate at the corresponding culvert set during the storm event. - Maximum Velocity:
This read-only column displays the maximum flow velocity at the corresponding culvert set during the storm event. - Headwater/Culvert Depth:
This read-only column displays the ratio of headwater depth to culvert height for the corresponding culvert set, expressed as “HW/D”, where “HW” is the total depth of water (measured from the invert of a culvert), and “D” is the interior height of the culvert barrel.
Sorting the Roadway Crossing – Culvert Table
The data in the Roadway Crossing – Culvert Parameters table can be sorted by multiple columns. The user can sort the data by holding down the [Shift] key while clicking the Up and Down arrows in the column headers. This allows for multi-column sorting without losing the previous sort. The sorting order is determined by the sequence in which the column headers are selected.
Follow the steps below to sort the data using multiple columns:
- Select the header of the first column and click the Up or Down arrow to sort the data in ascending or descending order.
- Hold down the [Shift] key, then select the header of the second column and click the Up or Down arrow to sort the second column.
- Repeat step 2 to sort the data of any additional column.
For example, first, select the Culvert Length column and click the Up arrow to sort the data in ascending order. Then, while holding the [Shift] key, select the Inlet Invert Elevation column and click the Down arrow to apply a secondary sort.
Copying and Exporting Roadway Crossing – Culvert Parameters
The data in the Roadway Crossing – Culvert Parameters table can be copied to the clipboard or exported as a Microsoft Excel or PDF document by using the right-click context menu commands such as Copy, Copy Table to Clipboard, Export Table to Excel, or Export Table to PDF.
After editing the required roadway crossing parameters, click the [Close] button to close the Roadway Crossing Table Edit dialog box.