Model the Roadway Corridor - Squarespace · PDF fileGEOPAK, InRoads, Power GEOPAK, ... Locate Profile - Reset For Active Profile: ... Set the Vertical Exaggeration to 5. 8

Practice WorkbookThis workbook is designed for use in Live instructor-led training and for OnDemand selfstudy. The explanations and demonstrations are provided by the instructor in the classroom, or in the OnDemand eLectures of this course available on the Bentley LEARN Server (learn.bentley.com).

This practice workbook is formatted for on-screen viewing using a PDF reader. It is also available as a PDF document in the dataset for this course.

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Model the Roadway CorridorThis workbook contains two sets of exercises.

Set 1: model roadway corridor.

Set 2: view 3D corridor model.

TRNC01190-1/0001

Copyright © 2014 Bentley Systems, Incorporated 2DO NOT DISTRIBUTE - Printing for student use is permitted

Exercise Set 1: Description and Objectives

Course Description

This set contains exercises to model the roadway corridor using an existing 2 lane urban typical section with curb and cutter and sidewalk. The pavement width will be controlled by the edge of pavement geometry created in a previous exercise.

Skills Taught

Create Corridor

Understand and use Design Stages

Display and review cross sections

Define Point Control for lane widening

Model Corridor Using an Existing Template

In this exercise we will define the geometry for the centerline of the East Road using know PI locations and curve radii. Feature definitions will be used so the geometry elements are created and displayed properly. The geometry will be checked for compliance with design standards.

1. Continue in the North St.dgn file created in the previous exercises.

If you did not complete the previous exercise...

GEOPAK, InRoads, Power GEOPAK, Power InRoads, or PowerCivil Users:

Start the software

Select the Bentley-Civil workspace

Open the North St.-Corridor-Imperial.dgn [North St.-Corridor-Metric.dgn] file.

MXROAD Users:

Copy the files and folders in the MX_Backup folder to the folder that contains the MeadowPark.tif file.

Start the software

In the MX Project Start Up window, set the Last Used MX Project to ...\Training.mmd

In the MX Project Start Up window, set the Current Drawing Name to North St.-Corridor-Imperial.dgn [North St.-Corridor-Metric.dgn] file.

Click OK.

2. Select the Element Selection tool.

3. Select the North St. centerline geometry and hover until the context sensitive menu appears.


4. Select the Create Corridor tool.

Following the heads up prompting:

a. Locate Profile - Reset For Active Profile: Click Reset mouse button

b. Corridor Name: Type North St.and click Data mouse button to accept.

c. Template: Hold down the ALT key and press the down arrow key to open the Pick Template window.

Browse to and select the Urban > 2 Lane Urban Curb and Gutter with Sidewalk template.

Click OK.

Click Data mouse button to accept template

d. Start Station: Type 11+50 [1+045] and press the Enter key, then click Data mouse button to accept

Note: Starting at this station to leave room for intersection civil cell.

e. End Station: Press ALT key to lock to the end of the alignment, then click Data mouse button to accept.

f. Interval: Type 10 [3] and click Data mouse button to accept.

g. Start Transition: Type 0 and click Data mouse button to accept.

h. Stop Transition: Type 0 and click Data mouse button to accept.

The corridor model is displayed.

The corridor model is built in a 3D model in the active DGN file. The 3D model is automatically referenced into the 2d model you are currently using. For now, we will turn off the display of the 3D model reference.


5. Turn off display of 3D model reference.

a. Select the References tool.

b. Select the North St. file. Notice the Default-3D name in the Model column.

c. Clear the Display setting by either clearing the check mark in the display column or selecting the icon at the bottom of the window.

d. Close the References window.

Notice that the corridor model is chorded around the curve. Corridor Models have a Design Stage property that affects how the corridor is modeled. The interval specified when the corridor is created defines the distance between drop points where the corridor is modeled. The Design Stage property applies a multiplier to the interval.

For example, a Preliminary design stage has a multiplier of 10. So instead of our model being processed every 10’ [3m] as we specified, it is modeled every 100’ [30m].This is what causes the chording.Early in a project using the Preliminary design stage causes the corridor to process faster and typically provides sufficient detail. As the project progresses changing to the design or final design stage results in a more accurate model.

6. Change the corridor to use the 2-Design design stage.

a. Select the Element Selection tool.

b. Select the corridor border. Sometimes it is easiest to select the corridor border by one of the lines that extends perpendicular to the border.

c. Expand the Corridor tab in the Element Information window.

d. Change the Design Stage to 2-Design.

The corridor model updates. Notice that the chording is no longer present because the interval is now closer together. The 2-Design design state has an interval multiplier of 2 so the corridor is being modeled every 20’ [6m].


View Corridor Cross Sections


2. Select the corridor border. Sometimes it is easiest to select the corridor border by one of the lines that extends perpendicular to the border.

3. Select the Open Cross Section Model tool.

4. Open View 5 by selecting the 5button at the bottom of the screen. There is nothing special about view 5, you can use any of the eight views.

5. Click inside view 5.

6. Select the down arrow next to View Properties at the top of the window.

7. Set the Vertical Exaggeration to 5.

8. Click the left and right arrow icons at the top of the window to scroll through the cross sections. A light blue line in the plan view indicates the location of the cross section currently being displayed.

9. Close the cross section view.


Add Point Control for Edge of Pavement

The current template is a fixed width and does not follow the turnout geometry defined in a previous exercise. The edge of pavement template point can be aligned with the geometry element using a point control and then the template will automatically change width to match the geometry element.

In the following image the blue edge of pavement, yellow curb, and purple sidewalk graphics generated from the corridor can be seen cutting through the turnout section.


2. Select the corridor border. Sometimes it is easiest to select the corridor border by one of the lines that extends perpendicular to the border.


3. Select the Corridor Objects tool.

4. Select Point Control from the Corridor Objects window.


5. Select the Add New tool.

Following the heads up prompting...

a. Start Station: Use ALT to lock to the beginning of the alignment.

b. End Station: Use ALT to lock to the end of the alignment.

c. Control Description: L_EOP

d. Point: LT_EOP

This is the name of the point in the template that will be tied to the geometry element.

It might be easiest to select this point name from the tool settings dialog instead of the heads up interface.

e. Mode: Horizontal

f. Control Type: Linear Geometry

g. Locate Plan or Profile Element: select the blue edge of pavement geometry in the plan view.

h. Use Secondary Alignment: No


i. Priority: 1

j. Start Horizontal Offset: 0

k. Stop Horizontal Offset: 0

The Point Control is listed in the Corridor Object window and the model is reprocessed.

6. Close the Corridor Objects window.

7. Use the Open Cross Section Model tool to review the cross sections again and observe the widening section.


Exercise Set 2: Description and Objectives

Course Description

This set contains exercises to review the 3D corridor model.

Skills Taught

Open View

Define which model is displayed in a view using the View Attributes

Define how the graphics in a view are displayed or rendered using the View Attributes

Rotate in a 3D view


Review 3D Model

The corridor modeling process builds a 3D model by default. Generally you will be working in a 2D drawing and just look at the 3D model when you want to view the model.

The 3D model can be viewed in any of the 8 views.

1. Open view 6.

2. Select the View Attributes icon.

3. Change the Models to Default-3D.

4. Change the Display Style to Smooth.

5. Close the View Attributes window.

6. If the model is not visible, select the Fit View tool at the top of the window.

7. Zoom in near the left edge of the North St. corridor model.

8. Select the View Rotation tool at the top of the window.

9. Position the cursor over the centerline at the left edge of the corridor model.

10. Snap to the centerline by pressing the left and right mouse buttons at the same time.

Hint: Some computers are setup to use the mouse wheel or center button to snap instead of the left and right button combination.

11. Press the data (left) mouse button to begin view rotation.

12. If the view cannot rotate as far as you want before the cursor exits the view window:

a. Press the data (left) mouse button to stop view rotation.

b. Move the cursor near the center of the view.

c. Press the data (left) mouse button to begin view rotation again.


If you zoom in close enough you can see that this is a true 3D model of the corridor complete with subsurfaces, pavement layers, curb and sidewalk.

13. Close View 6.




Model an Intersection with a Civil CellThis workbook contains exercises for modeling a T intersection complete with curb returns and side slopes using a civil cell.

TRNC01191-1/0001


Description and Objectives

Course Description

This workbook contains exercises for modeling a T intersection complete with curb returns and side slopes using a civil cell.

Skills Taught

Create a T intersection ply placing a Civil Cell

Change the curb return radii by editing the Civil Cell

Tie the Civil Cell and secondary corridor together by moving the template drop location

Cleanup intersection of Civil Cell and mainline corridor by copying and editing template drops.

View 3D Model

Place Civil Cell

In the following exercises you will use a civil intersection cell to tie between the South Blvd. edge of pavement and the North St. template. Before placing the intersection cell we will delete the North St. superelevation so it matches a more real world configuration.




Start the software


Open the North St.-Intersection-Imperial.dgn [North St.-Intersection-Metric.dgn] file.

MXROAD Users:


Start the software


In the MX Project Start Up window, set the Current Drawing Name to North St.-Intersection-Imperial.dgn [North St.-Intersection-Metric.dgn] file.

Click OK.


2. Only View 1 should be visible. IF necessary, close all other open views.

View 1 is a 2D view that includes the North St. geometry and corridor model.

3. Expand the Civil Cells Toolbox in the Tasks menu.

4. Select the Place Civil Cell tool.

The tool settings window shows the name of the active civil cell. The Place Civil Cell tool automatically defaults to the last civil cell used and thus the dialog is locked (grayed out).

5. Press the Reset mouse button to unlock the active civil cell.

6. Select the button to open the Pick Civil Cell window.

7. Browse to and select the T-Intersections > Basic T civil cell.

8. Click OK.

9. Following the heads up prompting:

a. Locate Reference Element: Secondary Road CL: select the red centerline for North St.

b. Locate Reference Element: Through Road EP: select the blue edge of pavement for South Blvd.

c. Select Elements to View Alternatives: press the Reset mouse button to skip

The civil cell can be oriented differently to meet your geometric configuration. In this exercise the cell is automatically oriented correctly so all you need to do is reset to accept the orientation.

d. Select Corridors to be Clipped: press the Reset mouse button to complete

If the South Blvd. corridor model was located in the active file, the Civil Cell can automatically clip the South Blvd. corridor where it overlaps the civil cell. In this exercise dataset the South Blvd. is located in a different file and is referenced into the active file. This is a common workflow for larger projects. In this configuration we will manually clip the South Blvd. corridor later in the exercise.

e. Press Data mouse button to accept civil cell placement.


A gap exists between the end of the intersection cell and the North St. corridor model that must be closed.


11. Select the Template Drop Handle for the North St. corridor. The Template Drop Handle is on the left (looking up station) at the beginning of the corridor.

12. Select the Start Template Drop manipulator arrow.


13. Position the cursor over the centerline at the end of the intersection cell and pause until the thick yellow snap graphic appears indicating that you are snapped to the end of the intersection cell centerline.

14. Click the Data mouse button to accept.

The gap between the intersection cell and the corridor is healed.


Review Intersection 3D Model

1. Open View 6.

2. Change view attributes to show 3D model.

a. Select the View Attributes icon.

b. Change the Models to Default-3D.

c. Change the Display Style to Illustration: Ignore Lighting.

d. Close the View Attributes window.

3. Adjust levels displayed

a. Open the Level Display tool.

b. Turn off the display of the Default level.

Hint: The Default level may be the active level. The display of the default level cannot be turned off so you might need to double click on another level to set it as active first.

c. You may want to turn off the levels that contain linear graphics so only the 3D model is visible. The following levels should be displayed.

Grade_Cut

Grade_Daylight

Grade_Fill

Grade_Veg_Grass

Road_Curb

Road_Pave_Aggregate

Road_Pave_Concrete

Road_Pave_Subbase

Road_Sidewalk


4. If the model is not visible, select the Fit View tool at the top of the window.

5. Rotate the drawing to view the model.

Hint: If you get lost while rotating the view, select the Top View or one of the other preset view rotations.


Adjust Curb Return Radius

The T intersection civil cell places a 35’ [12m] radius curb return by default. However, this radius can be easily adjusted as needed.

1. Set the plan and 3D model views so you can see the south curb return in both similar to the following image. This view configuration will allow you to see the 3D model update as you update the 2d geometry.



3. Select the blue edge of pavement line in the curb return.

The geometry manipulator text appears.

4. Click on the Radius manipulator text.

5. Change the radius value to 50 [15] and click the Enter key.

The horizontal geometry and 3D model update.

6. Select File > Save Settings.

Save Settings stores how the views are currently setup so that when you return to this file the 3D view will still be setup and visible.


Cleanup South Blvd. - North St. Intersection Overlap

Currently the South Blvd. corridor overlaps the North St. Intersection. For a cleaner design model the South Blvd. corridor needs to be cleaned up through the area of the intersection.

1. Change to the South Blvd.file.

a. Select File > Open.

b. Select the South Blvd. - Imperial.dgn [South Blvd. - Metric.dgn] file.

2. Turn on all levels

a. Select the Level Display tool.

b. Enable all levels EXCEPT Draft_Corr_Superelevation.

3. Attach as a Reference the North St. file (with the intersection and corridor you created).

Be sure Snap and Locate locks are enabled and the Nested Attachments is set to No Nesting.

Hint: If you are not sure of the North St. file name, select the File menu. At the bottom of the menu is listed recently used files. The file in position 2is the North St. file you were most recently using.

4. Zoom in on the upper left portion of the alignment where North St. intersects South Blvd.

5. Create new Template Drops on South Blvd. where the curb returns intersect the edge of pavement.

These two new template drops will use the same template as currently defined through this segment of South Blvd. so they overall design of the roadway will not change. The template through the intersection can then be edited to remove the curb, sidewalk, and side slopes through the intersection

a. Select the Element Selection tool.


b. Select the Template Drop boundary around South Blvd. and hover until the context menu to appear.

c. Select the Copy Template Drop tool.

d. Following the heads up prompting; select the Start Station by snapping the end of an element in the northern curb return.


e. Select the Stop Station by snapping to the end of an element in the opposite curb return.

The South Blvd. corridor now has to new template drops located at the exact ends of the intersection cell.

6. Edit Template Drop to remove curb, sidewalk, and side slopes through the intersection.

a. Select the new Template Drop boundary in the intersection and hover until the context menu appears.

b. Select the Edit Template Drop tool.

The template editor window appears showing the template being used at this template drop location (through the intersection). We need to delete the curb, sidewalk, and side slope components on the left side of the template.

c. Right click in the template editor window and select Delete Components.

d. Position the cursor near the left edge of the editing window and press and hold the data (left) mouse button.

e. Move the cursor around drawing a white line. Any element that the white line touches is deleted when you release the data button.


f. Repeat as necessary to delete all of the components left of the edge of pavement. When complete, the template should look like the following image.

g. Click OK.

The South Blvd. corridor model is recalculated with the new template through the intersection area.


Review Complete Model

1. Open the North St file where you created the intersection and corridor.

2. Review the finished model in view 6.

The view should still be open because you used the Save Settings command before exiting the file.

Change the Display Style to Smooth to see the rendering without the triangles.




Delivering the Civil ModelThis workbook contains exercises to create a single terrain model from the two road corridors and the intersection and how to share that terrain model as construction deliverables.

TRNC01192-1/0002


Description and Objectives

Course Description

This workbook contains exercises to create a single terrain model from the two road corridors and the intersection and how to share that terrain model as construction deliverables.

Skills Taught

Create Final 3D models

Create terrain model from Composite 3D model

Export terrain model to MXROAD, GEOPAK, InRoads, or LandXML

Change North St. Corridor Design Stage to Final

Displaying the corridor and intersection models as 3D linear features is commonly what a contractor will want to receive as the deliverable.

3D linear features are easily displayed from the models using the Design Stage functionality.




Start the software


Open the North St.-Delivering-Imperial.dgn [North St.-Delivering-Metric.dgn] file.

MXROAD Users:


Start the software


In the MX Project Start Up window, set the Current Drawing Name to North St.-Delivering-Imperial.dgn [North St.-Delivering-Metric.dgn] file.

Click OK.

Up until now we have used the Preliminary and Design design stages for speed and efficiency. When a project is near final, the design stage will be changed to Final so the most accurate models are built and the final 3D model elements are displayed. For construction documentation we will create 3D linear features using design stage that only displays the linear features and not any of the meshes. The 3D linear features are commonly requested by contractors and can be used to build a terrain model of the entire design. In this exercise we will use the 3D linear features to build a composite terrain model of the two road corridors and the intersection.

2. Update North St. corridor to Final design stage.


a. Select the North St. corridor.

b. In the Element Information window, change the Design Stage to Final Linear Features.

c. Open a view to review the 3D model and verify only linear features are displayed for the North St. corridor.

Hint: View 6 should still be setup to view the 3D model from the previous exercises.

d. Turn on all levels in the 3D model view.

3. Update intersection (civil cell) to Final design stage.

a. Select the Intersection Cell.

In the top of the Element Information window, expand Civil Cell: Basic T > Dependent Elements.

b. Select the four Linear Template elements.

Hint: Hold down the CTRL key to select multiple elements

c. Change the Design Stage to Final Linear Features.


4. Open a view to review the 3D model.

Hint: View 6 should still be setup to view the 3D model from the previous exercises.

5. Turn on all levels in the 3D model view.

6. Verify that only linear features are displayed for the North St. corridor and the intersection. There will also be a triangulated terrain model in the intersection visible. Your view should look similar to the following image.


Change South Blvd. Corridor Design Stage to Final

1. Open the South Blvd-Imperial.dgn [South Blvd-Metric.dgn] file you used to build your intersection model.

If you did not complete the previous exercise and build your own intersection model, open the South Blvd-Delivering-Imperial.dgn [South Blvd-Delivering-Metric.dgn] file.

2. Select the South Blvd. corridor.

3. Change the Design Stage to Final Linear Features.

4. Open a view to review the 3D model.

5. Turn on all levels in the 3D model view.

6. Verify that only linear features are displayed for the North St. corridor and the intersection. There will also be a triangulated terrain model in the intersection visible. Your view should look similar to the following image.


Create a Terrain Model of the Composite Model

1. Open the file named Linear Features Model.dgn [Linear Features Model-Metric.dgn].

This otherwise blank file contains filter and filter group definitions that will be used in the following exercise. To learn how to create filters and filter groups attend the Bentley Institute Terrain Modeling course.

2. Attach the Default-3D models from the North St. and South Blvd. files.

If you did not complete the previous exercise and build your own intersection model, attach the North St.-Delivering-Imperial.dgn [North St.-Delivering-Metric.dgn] and South Blvd.-Delivering-Imperial.dgn [South Blvd.-Delivering-Metric.dgn] files.

Important: Be sure to...

set the Model to the Default-3D, not the Default model which is the 2D design space.

set Nested Attachments to No Nesting.

3. Fit the graphics in the view.


The linear features are a direct result of each point defined in a template. To know which linear features should be used, you need to understand the templates you are working with. The objective of this workflow is to create a composite model of the top surface of two roadways and the intersection.

4. Review Template Points.

a. Select the Create Template tool from the task menu.

b. Browse to the Templates > Urban > 2 Lane Urban Curb and Gutter with Sidewalk template.

c. Double click on the 2 Lane Urban Curb and Gutter with Sidewalk template to make it active.

d. Disable the Display Point Names option at the top of the window.

Each point in the template is marked with a + sign. Most of the points in this template are red in color. The color of the points is not important for this discussion.

e. Hover the cursor over a point and see which Feature Definition the point is associated with. Pay particular attention to the different Feature Definitions used for points at the same horizontal offset. For example, the top and bottom of a sidewalk edge.

To create a terrain model that included the top of the sidewalk, we would include the Road_Sidewalk_Front features and exclude the Subgrade features. In the Bentley-Civil workspace, graphic elements are drawn on a level that has the same name as the feature.

f. Close the Create Template window.


5. Create Terrain Model using the graphical filter.

a. Select the Create Terrain Model by Graphical Filter tool from the Terrain Model task menu.

b. Disable the Set Append to Terrain option.

c. Select the ellipsis in the Graphical Filter Group option and select the Template Linear Features Graphical Filter Group from the Active DGN.

d. Disable the Ignore Feature Linking option.

e. Set Edge Method to Max. Triangle Length.

f. Set Maximum Triangle Side Length to 50 [15].

g. Set Feature Definition to Design_Triangles.

h. Set Name to Design.

i. Click in graphic view to accept solution and create the terrain model.


6. Remove the East Road centerline

a. Select the Remove Features tool.

b. Following the heads up prompting

Locate the Terrain Model to Remove Elements From: Select the Design terrain model.

Locate Element to Remove: Select the East Road centerline graphic to remove it from the selection set.

Right-click (reset)


Export Terrain Model to MX, GEOPAK, InRoads, or LandXML

Now that you have a complete terrain model for the design area it can easily be exported to the other formats for further processing or use.

Use the Export to File tool to save the terrain model in the desired format.

Documents

Model the Roadway Corridor - Squarespace · PDF fileGEOPAK, InRoads, Power GEOPAK, ... Locate Profile - Reset For Active Profile: ... Set the Vertical Exaggeration to 5. 8