Module 1 - Base Model Creation
Description
In this module you will learn how to create base models for bridge/structure designs.
Objectives:
- Learn how to select the proper Workspace and WorkSet.
- Select the proper seed file to create a Base Model.
- Align a file so it’s in the proper geospatial location.
Before attempting to open or create DGN files users should make sure the following is in place:
- CTDOT users should have the CTDOT CONNECT DDE synced through SharePoint with the COMPASS Project Synced along with the CAD Configuration follow Module 3 - CTDOT Employee DDE Sync.
-
Consultants should have one of the following set up: Module 1 - Consultant DDE Install or Module 2 - Consultant DDE Sync.
- Make note of the Coordinate System you will be working in. If you have existing survey data, you will need to find out what system is being used (NAD 83/NAVD 88 or NAD 27/NAVD 29).
Sections:
WorkSet Bridge Templates
Creating a Design File
WorkSet Bridge Templates
OpenBridge Modeler uses custom templates which designers can create and modify including:
- 2D Templates: Decks, Beams, Columns, and Barriers
- 3D Templates: Piers, Abutments, and Wingwalls
- Parametric Templates
The Bridge Templates point to the Project (WorkSet location) …- Design\Standards\Bridge Templates. This will allow designers Read/Write access to these files. The first time a designer begins working on a project they should review these files using Windows File Explorer.
1. Compare these two folder locations to make sure the WorkSet has all the needed files.
...CT_Configuration\Organization-BIM\_CT_Bridge Standards\Bridge Templates
Project (WorkSet location) ...- Design\Standards\Bridge Templates
2. If the Bridge Templates folder does not exist, the designer will need to copy the Bridge Templates folder from:
...CT_Configuration\Organization-BIM\_CT_Bridge Standards\Bridge Templates
to: …- Design\Standards\
3. If there is already a Bridge Templates folder in the WorkSet location ...- Design\Standards and after reviewing it looks to have missing or out of date files, the designer will need update. Note: New Designers should be cautious when copying over files already in the WorkSet location as they may overwrite work done by another Designer. Keep in mind designers may have modified some of these files so a careful review should be followed when deciding what files to update.
Creating a Design File
1. Log on to the CONNECTION Client. Bentley CONNECT licensing requires users to log into their Bentley account to secure a software license. CTDOT users should log in using your CTDOT email address and Bentley password. If you do not see the dialog box, select the ˄ icon on the bottom Windows Screen. Click on the Connection Client Icon and select Open.
2. Access OpenBridge through Accounting or the Customized Icon following Volume 1 - M.6.1 Accessing the Application.
3. On the OpenRoads open screen select Custom Configuration, using the small drop-down arrows select the Workspace CT_Workspace, the needed WorkSet and Role.
4. Select the New File Icon. In the New dialog box browse to the Bridge/Base_Models folder.
5. The Seed file should be set to
...CT_Configuration\Organization\Seed\Bridge\Seed3D - CT BridgeDesign.dgn.
6. In the File name field enter a name for your file using the CTDOT File Naming structure.
Example: SB_CB_1234_1234_Bridge#.dgn
7. Select Save and the new file will open.
8. To set up your Interface follow the steps in Volume 1 - Module 6.2 Setting up the Interface.
9. If it has been determined the provided survey is in NAD 27/NAVD 29 you will need to re-project your design file’s Geospatial Header, follow Volume 2 – Module 1 - Working with Geographic Coordinate Systems to complete this task.
10. Reference in other Design Unit’s DGN files. This could include but not limited to Highway, Illumination, Signal, Signing, Pavement Markings and Existing Survey.
a. Select the CTDOT workflow and click on the Attach Tab, in the References section click on Attach Reference.
b. Navigate to the Highways\Base_Models folder and reference the Highway Design Master Base Model file. Choose the needed Model (most likely its “Default”) and use Live Nesting at a Nesting Depth of 1. Note: Highway Design may elect to have several DGN files which could include Alignment dgns, Modeling dgns, and Drainage dgns. Highway Design will have all these files referenced to a Master Highway dgn. When another unit wishes to reference, they can simply use a nested Depth of 1 to reference the Master Highway dgn and all its first level of reference files will in, which also should include the Survey dgns.
c. To reference navigate to the Active_Survey folder and reference the Survey *.dgn file. This may include 2 files a Terrain DGN and a Ground Topo (grn) DGN Note: Older DGN Files will need to be referenced in with certain settings to get them to line up in the correct Geospatial location.
d. For older reference files turn True Scale off and set the Scale to 1:1. Note: Always do a check by clicking on the Survey’s Northing and Easting Grid Marks to compare the files read out. If they do not match you did not properly align the file Geospatially.
Select the Home Tab, in the Primary Section select the Attach Tool drop down and choose References. This will open the References Dialog box.
Review the Attachments. If the Survey file did not propagate to reference with Live nesting in the above step you will need to reference the Survey files directly. If there is no Existing Survey users can attach Raster Images or use a Back ground Map, these workflows can be found in Volume 2 – Module 2 - Attaching Imagery and LiDAR Data.
11. Select Level Display and turn off the desired levels in the reference files.
12. Activate the terrain by clicking on the terrain boundary, hover over the boundary and from the pop-up menu select the Set Terrain Active tool.
13. Click again on the terrain boundary and set the override symbology to Yes. Then to help with the horizontal alignment creation, you can turn on the contours.
14. Select Save Settings.
15. Select the OpenBridge Workflow and begin designing your structure using the tools available in the ribbon.
Tutorials – Click on the Orange Find Training button and enter OpenBridge Modeler.
It is suggested to start with Introduction to OpenBridge Designer/OpenBridge Modeler course.
The following Modules are available:
Module 1 Getting Started
Module 2 Geometry
Module 3 Precast Girder 2 Span straight Bridge Model
Module 3w Precast Beam 2 Span straight Bridge Model using Wizard
Module 4 Steel Girder 2 Span straight Bridge Model
Module 5 Steel Girder 2 Span curved Bridge Model
Module 6 Segmental Bridge Model
Module 7 Libraries Module 8 Reports
Module 9 Interoperability
Module 10 Visualization with Lumen RT
Module 11 Precast Girder 2 Span – Divided Highway Example