OpenRail: Beginner’s Guide to Rail Design with Bentley

This lecture introduces the process of attaching regression points to your project in Bentley OpenRail Designer. Regression points are essential for defining precise track alignments by anchoring tangent and curve elements in the design.

You'll begin by accessing the References dialog, which manages all attached files related to your project. Here, you will learn to attach the TrackClpoints DGN file containing the regression points that serve as references for your track geometry.

The session explains how to use the Coincident World attachment method to link the regression points properly, ensuring they align with the terrain and existing model. You will also get familiar with managing multiple references like terrain models and the rail design files within OpenRail Designer.

Key topics covered in this lecture include:

• Understanding the role of regression points in rail design.

• Accessing and using the References dialog in OpenRail Designer.

• Attaching reference files with the Coincident World attachment method.

• Identifying and managing multiple attached references, including terrain and rail models.

• Visualizing regression points in the project workspace.

Practical value in rail design workflows:

• Enables accurate alignment of rail geometry based on real-world survey points.

• Facilitates smooth integration of designed track elements with existing terrain data.

• Provides a foundational step for building complex rail geometry with curves and spirals.

• Helps maintain project organization by effectively managing reference attachments.

By the end of this lecture, learners will understand how to attach and work with regression points as a critical reference in rail design projects. This knowledge will allow them to start creating precise track geometries anchored to real survey data within OpenRail Designer.

This lecture introduces the process of creating regression lines from sorted regression points, which is a fundamental step in developing accurate track alignments. Regression analysis begins by sorting the points based on a starting position and direction, ensuring they are correctly ordered for alignment creation.

Using Bentley OpenRail Designer tools, learners will follow the workflow of selecting regression points, defining parameters such as feature definitions and direction, and generating a regression line that connects all relevant points systematically.

After establishing the regression line, the lecture covers methods to manage the display of source points to keep the workspace organized and aid in clarity during further design steps.

Key topics covered in this lecture include:

• Sorting regression points using the Sort algorithm based on a start and search direction

• Selecting regression points with the Element Selection tool

• Creating the regression line from points and setting feature definitions

• Specifying locate start points and regression direction interactively

• Handling heads-up prompts to input parameters and complete the regression line tool

• Managing the visibility of regression points after line creation for a cleaner interface

Practical value in rail design:

• Enables precise track alignment through accurate regression line creation

• Improves workflow efficiency by organizing points and managing display elements in the software

• Supports better visualization of track geometry for further design refinement

• Prepares learners for subsequent steps like curvature analysis and complex geometry building

Upon completing this lecture, learners will understand how to generate and control regression lines from raw rail geometry points, laying the groundwork for detailed and professional-quality track design within OpenRail Designer.

In this lecture, you will learn how to analyze track alignment using curvature diagrams, a powerful tool that complements plan view regression analysis. This method helps visually identify the geometry of the rail track by showing the relationship between points along the alignment and their deflection values relative to neighbors.

The curvature diagram allows you to distinguish tangents, curves, and transition zones with ease. You will see how to select the regression line and display its horizontal curvature diagram using the OpenRail Designer interface, making it simpler to understand track geometry nuances.

This lecture fits within the broader objective of mastering regression techniques to create precise and optimized rail alignments. Understanding curvature diagrams is essential for ensuring smooth track transitions and compliance with railway design standards.

Key topics covered in this lesson:

• Introduction to curvature diagrams as a tool alongside regression analysis

• How to select and display horizontal curvature diagrams in OpenRail Designer

• Interpreting vertical axis deflection values relative to tangents and curves

• Identifying tangent sections based on low deflection points

• Recognizing curves through high deflection values

• Understanding transition zones and their representation as spiral curves

Practical value for rail design:

• Improves accuracy in track geometry assessment by visualizing curvature changes

• Supports identification of smooth transition curves for enhanced ride quality

• Aids in detecting problematic geometry segments early in the design process

• Facilitates compliance with engineering standards on track curvature and spirals

By the end of this lesson, you will be able to confidently interpret curvature diagrams to evaluate and refine track geometry, supporting the creation of more effective and safer rail designs using OpenRail Designer.

In this lecture, we delve into the critical process of creating single horizontal regressions within the OpenRail Designer software. Single Horizontal Regression is a specialized tool designed to generate individual tangent lines or curves derived from an existing regression line. This process enables detailed control over segments of a rail alignment, allowing the designer to adjust specific sections without altering the entire regression line indiscriminately. The ability to break down a regression line into manageable tangents or curves is essential for precision in rail geometry design.

The workflow typically involves working either directly with the regression line in Plan view or using the curvature line found within the curvature diagram view. For this lesson, focus is placed on employing the curvature diagram to designate appropriate tangents and curves, as it provides a graphical visualization of curvature changes along the alignment. Notably, spirals—which represent transition elements between straight and curved sections—are not created within this step but are instead added later through a different command, emphasizing the modular approach to rail geometry design in OpenRail.

To use the tool, the user navigates through the menu path Rail Regression > Horizontal Regression > Single Horizontal Regression and selects the curvature line in the curvature diagram. Key parameters and values are set in the Tool Settings window to ensure the regression is configured correctly. The process entails selecting specific points on the curvature line to define tangent sections. The user clicks on the start point and the end point on the curvature diagram to establish the boundaries for regression analysis. A vertical selection box is then adjusted to include only the relevant points for regression, deliberately excluding any outliers to maintain the integrity of the geometrical representation.

This methodical selection results in the creation of tangent or curved sections in the Plan view corresponding to the defined regression points. The user repeats these steps across the entire curve, covering multiple tangent and curved sections without selecting the transitional spiral zones. This selective approach ensures that the regression geometry accurately reflects the desired rail alignment, with each segment precisely tuned.

Adjusting the regression geometry is equally flexible. The regression box, an editable entity, can be manipulated by clicking to activate control handles. These handles allow users to drag and redefine the start and end positions of the regression section. Additionally, numerical adjustments can be made by editing the selection box's amplitude through a text input, offering precise control over the regression extent. This adaptability is vital for fine-tuning designs to meet specific project requirements.

When removing regression geometry, it is important to note that deleting the created geometry in Plan view does not remove the regression box within the regression space. Therefore, the recommended practice is to delete the regression box itself to completely remove the corresponding regression segment, ensuring the design remains clean and manageable.

Mastering single horizontal regression empowers rail designers to piecewise control alignment geometry with precision, ultimately enhancing the quality and practicality of rail project designs.

Key topics covered in this lecture:

• Introduction to Single Horizontal Regression tool in OpenRail Designer

• Creating tangents and curves from regression lines

• Distinguishing use of Plan view versus Curvature diagram for regression

• Defining regression boundaries and selection of regression points

• Excluding outliers and transition zones in regression

• Editing regression boxes and geometry manipulation techniques

• Deleting regression geometry properly by removing regression boxes

Practical value of mastering Single Horizontal Regression in rail design:

• Enables precise control over individual rail alignment segments

• Facilitates accurate modeling of tangents and curves in rail tracks

• Improves alignment quality by excluding irrelevant or erroneous points

• Allows incremental geometry editing without disrupting entire design

• Supports high-detail rail design workflows for complex geometry requirements

• Helps maintain clean and organized regression data management

• Optimizes rail infrastructure design accuracy and reliability

By completing this lesson, learners will understand how to expertly create, adjust, and manage single horizontal regressions within OpenRail Designer, equipping them with the skills to develop refined rail geometries tailored to project demands.

In this lecture, you will dive into the creation of complex rail geometry by integrating spirals and transitions seamlessly into the alignment. This process is critical in rail design to ensure smooth curvature changes and enhance passenger comfort by gradually transitioning between tangent and curved sections.

The lecture begins with preparing the base alignment by combining regressed tangents and curves into a single complex horizontal alignment using the OpenRail Designer’s tools. You will learn to navigate and manipulate the curvature diagram and regression lines efficiently, focusing only on final tangents and curves for clarity in design.

A major component of this workflow involves the use of the ‘Complex by Elements’ tool. You will see how to automatically create the complex horizontal alignment using this tool with optimized settings. The lecture carefully explains the importance of the maximum gap parameter, which determines how the software handles the spacing between tangents and curves to avoid incorporating undesired elements such as regression lines too close to the main geometry.

The lecture highlights the choice between automatic and manual methods for creating the complex alignment. While the automatic method is straightforward, the manual approach gives you precise control to exclude certain geometry elements based on their spatial relation within the 300-meter maximum gap. Special emphasis is placed on the orientation of elements when selected—ensuring the directionality of the alignment is correct by selecting the appropriate half of each tangent.

Once the complex horizontal line is established, the lecture demonstrates how to apply the ‘Complex Spiral Between’ tool. This function is used to fill gaps between tangents and curves with spirals—linear transitions that smooth the curvature change and improve track geometry safety and ride quality. Precise parameter settings for this tool are covered, and you will be guided through selecting the centerline of the track alignment created in the previous step.

Throughout the process, detailed tips are shared about element selection strategies within the software to guarantee the correct direction of track elements and avoid errors in alignment behavior. These steps bring together best practices in rail design that comply with industry standards for track geometry.

This lecture is part of a broader section aimed at mastering regression and geometry techniques in rail design, and it builds on foundational knowledge of creating regression lines and curvature diagrams to achieve a professional level of competency in using Bentley OpenRail Designer.

Key Topics Covered:

• Understanding complex geometry integration with spirals in rail alignment.

• Use of curvature diagrams and regression lines to finalize geometry.

• Creating single horizontal complex alignments using the Complex by Elements tool.

• Managing maximum gap settings to control geometry element inclusion.

• Automatic versus manual methods for building complex alignments.

• Element selection techniques for accurate alignment orientation.

• Applying the Complex Spiral Between tool for smooth transitions.

• Parameter configuration for spiral insertion in rail design.

• Practical manipulation of regression geometries within OpenRail Designer.

Practical Value in Rail Design:

• Enables creation of professional-grade rail track alignments with smooth curvature transitions.

• Improves passenger comfort and safety through gradual spiral integration.

• Provides control over track geometry precision by managing gaps and element direction.

• Supports efficient workflows by combining automatic and manual alignment techniques.

• Ensures rail designs comply with international standards for geometry and safety.

• Facilitates the use of OpenRail Designer for advanced alignment configurations.

• Reduces design errors by clear guidance on element selection and orientation handling.

After completing this lecture, you will understand how to integrate complex spirals and transitions into rail track geometry using OpenRail Designer effectively. You will be able to create advanced horizontal alignments that combine tangents and curves with smooth spiral connections, essential for high-quality rail infrastructure design.

This lecture introduces the concept and application of speed tables in rail design using Bentley OpenRail Designer. Speed tables enable defining varying speed requirements along different sections of the track alignment, essential for precise track performance and safety management.

You'll explore how speed tables are crucial for accurate superelevation (cant) calculations and understand their expanded usage in workflows like overhead line design. The session guides you through creating a speed table by selecting the track alignment and setting base design speeds.

Hands-on instructions include adding multiple speed ranges at specific stations, allowing for dynamic speed transitions to suit operational demands. Additionally, you'll learn how to define alternative speed schemes for diverse train operations, such as express and freight trains, by adding and customizing multiple speed columns within the table.

Key topics covered in this lecture:

• Purpose and definition of speed tables in rail design

• Creating a speed table for track alignment

• Adding speed ranges and specifying speed changes at various stations

• Using speed schemes to define different operational scenarios

• Renaming and managing speed scheme columns

• Toggling speed diagram visibility

• Opening and removing existing speed tables

Practical value in rail design:

• Accurately managing speed limits to ensure track safety and performance

• Allowing flexible speed planning for different train types and operational needs

• Integrating speed data to optimize superelevation and track geometry

• Streamlining workflow for multiple rail infrastructure components

By the end of this lecture, learners will be able to confidently create and manage speed tables and speed schemes within OpenRail Designer, applying them effectively to tailor rail alignments for diverse operational requirements.

This lecture introduces the concept of cant, or superelevation, which is an essential element in rail design used to improve stability and safety on curves. Cant is calculated based on the horizontal alignment of the track and the train speed, following a mathematical formula involving a constant, velocity squared, and the radius of the curve.

In this session, you will be guided through how to create cant definitions within Bentley OpenRail Designer. The lecture covers selecting the main track geometry, setting feature definitions for cant, and using heads-up prompts to input key parameters effectively.

You'll also learn how to lock start and end stations with keyboard shortcuts, ensuring precise placement of cant along the track. Additionally, the lecture shows how the cant feature appears visually in the plan view as a green envelope around the rail geometry, making it easy to review and adjust.

Key topics covered in this lecture:

• The concept and calculation formula of cant (superelevation)

• Using OpenRail Designer to create and assign cant to rail geometry

• Setting feature definitions and inputs through heads-up prompts

• Locking start and end points for cant application using keyboard shortcuts

• Visualizing cant as a green envelope in plan view

• Modifying cant parameters via the properties dialog

Practical value for rail design:

• Enhance track stability and safety by applying accurate cant values

• Improve your workflow for rail alignment design with precise cant input

• Visually inspect and adjust cant parameters easily within your project

• Gain proficiency in relevant OpenRail Designer tools and features

After this lecture, you will understand how to calculate and apply cant in OpenRail Designer, enabling you to create safer and more effective rail designs through proper superelevation management.

In this lecture, you will learn how to effectively edit cant values using the Cant Editor tool in Bentley OpenRail Designer. Cant, also known as superelevation, is critical in rail design to ensure safe and comfortable train operation on curved tracks by adjusting the rail height difference. This lesson takes a practical approach by demonstrating how to select, modify, and validate cant values applied along the track alignment.

The workflow begins with accessing the Cant Editor through the Rail Cant edit option, which opens a specialized interface for precise cant management. Within the editor, you will find a Cant range list displaying speed ranges derived from the predefined speed table. You can focus on the entire alignment or isolate specific sections to manage cant values with improved granularity.

The tool provides several useful features detailed in the toolbar, including toggling the cant diagram on and off, which visually represents how cant varies along the track. Another important function is the virtual sections toggle, which simplifies the view by hiding speed ranges where cant values are zero, helping maintain focus on sections where cant adjustment is required.

One of the key capabilities of the Cant Editor is the Validate Data tool, which allows you to check that cant values conform to defined design limits. For example, you can set a maximum allowable cant value such as 80 millimeters, and the system will highlight any cant values exceeding this threshold. This immediate visual feedback aids in identifying problematic sections that may require design refinement or further analysis.

It is important to note that validation only highlights out-of-range cant values; it does not automatically modify or correct these values. This distinction ensures that final design decisions remain under the engineer's control, maintaining accuracy and compliance with project specifications.

By the end of this lecture, you will be comfortable navigating the Cant Editor interface, applying manual adjustments to cant values, and using the validation tools to ensure your rail alignment's superelevation meets safety and performance standards.

Key topics covered in this lecture

• Accessing and opening the Cant Editor tool

• Understanding the Cant range list and speed table integration

• Using toolbar options like Toggle Cant Diagram and Virtual Sections

• Applying manual cant value changes to track sections

• Executing the Validate Data function with max cant thresholds

• Interpreting visual validation feedback for cant compliance

• Distinguishing between validation and automatic cant adjustment

Practical value in rail design and infrastructure management

• Accurately modifying cant to optimize train stability and passenger comfort

• Ensuring track geometry complies with project speed and safety guidelines

• Quickly identifying cant design issues with visual validation tools

• Enhancing data integrity by differentiating validation results from direct edits

• Improving design confidence through real-time cant value feedback

• Applying professional design standards to superelevation management

• Facilitating informed decision-making during rail alignment adjustments

After completing this lecture, learners will understand how to efficiently edit and validate cant values within Bentley OpenRail Designer. They will be able to apply safe and effective superelevation adjustments based on project requirements, ensuring rail track designs meet relevant speed and safety standards.

This lecture focuses on designing siding geometry within a rail track system using Bentley OpenRail Designer. You will learn how to create and position siding turnouts parallel to the main track alignment to facilitate the construction of sidings.

The session demonstrates the workflow for accurately placing turnouts at specific stations along the track and adjusting their orientation for proper siding formation. You will be guided on how to manage turnout parameters and use precise station values to ensure correct turnout placement.

By zooming into the track sections where sidings are to be located, you gain insights into the naming conventions and structure of turnouts, which is essential for understanding their layout and connectivity.

Key topics covered in this lecture include:

• Understanding siding geometry and turnout components

• Placing begin and end turnouts using station values

• Configuring turnout hand and orientation

• Using tool settings and dialogs for turnout parameterization

• Applying precise placement with heads-up display inputs

• Managing locked fields and unlocking them for editing

• Correcting turnout orientation via siding properties

Practical applications for rail design professionals:

• Designing sidings effectively for track layouts

• Accurate placement of turnouts to maintain track geometry integrity

• Customization and correction of turnout orientation after placement

• Utilizing software tools for precision engineering tasks

After completing this lecture, learners will be able to design siding geometry by creating parallel turnouts at specified stations, correctly orient them, and adjust their properties to build functional sidings integrated with the main rail alignment.

Creating accurate siding geometry is a critical step in rail design, ensuring seamless integration of sidings with the main rail track. In this lecture, we begin by positioning both the starting and ending turnouts clearly in view to establish the parameters for the siding layout. Accurate visual framing allows precise manipulation and placement of siding geometry offsets relative to the main track, which is essential for maintaining design standards and operational safety.

The lecture guides learners through the process of applying a horizontal geometry offset and tapering the siding layout for smooth transitions. We configure the alignment feature definitions to specify the type of rail elements involved, such as alignment rail or HR track, allowing OpenRail Designer to correctly interpret and model the siding components. Hands-on adjustments via heads-up prompting facilitate the input of key design parameters without losing workflow momentum.

Students learn how to lock key offsets — in this case, a five-meter horizontal offset from the main track — and position the siding on the desired side of the main geometry. The beginning and end stations of the siding are placed approximately near the turnouts but will undergo refinement in subsequent workflow steps, emphasizing iterative improvement in design accuracy.

The lecture further explains essential editing techniques, such as extending turnout elements to intersect precisely with the newly created siding geometry. This step is vital for ensuring physical and operational connectivity between track components. Zooming into the turnouts allows for detailed editing and alignment verification, leveraging simple line geometry tools configured with correct feature definitions to represent secondary baseline alignment segments.

Connecting the siding layout with curves is another important task covered. Learners use arc tools to create smooth horizontal curves between turnout extensions and siding geometry, with parameters like radius and trim extents carefully controlled. This ensures the siding conforms to required rail curvature standards, promoting safe train movement and reducing operational wear.

Finally, the components of the siding — including individual turnouts and the sliding geometry — are combined into a complex geometry element. This aggregation step organizes the design model, making it easier to manage and review. Particular attention is paid to the correct selection order so that the resulting complex geometry flows logically along the intended track direction, an important technical decision for accurate downstream modeling and simulations.

This structured workflow, from initial offset placement to complex element creation, demonstrates how meticulous geometry creation in OpenRail Designer can achieve detailed and accurate rail siding designs suitable for professional railroad projects.

Key topics covered in this lecture:

• Zooming and visual framing of siding turnouts

• Setting horizontal offsets and tapering for siding geometry

• Using alignment feature definitions for rail components

• Heads-up prompting for efficient parameter input

• Extending turnout elements to connect with siding

• Applying simple line and arc geometry tools

• Creating horizontal arcs between geometric elements with controlled radius

• Constructing complex geometry from individual siding components

• Directional selection of geometry elements for complex creation

Practical value for rail design professionals:

• Ability to accurately model siding tracks offset from main rail alignment

• Skills to integrate turnouts smoothly with siding geometry

• Proficiency in using OpenRail Designer’s geometry tools and alignment settings

• Understanding iterative refinement of track start and end stations

• Capability to create smooth curves and transitions meeting rail standards

• Improved workflow efficiency through heads-up prompting techniques

• Competence in assembling complex geometry for comprehensive rail models

By completing this lecture, learners will confidently create and refine siding geometry within OpenRail Designer, ensuring precise alignment with main tracks and proper integration of track turnouts. They will gain practical skills essential for producing professional-grade rail designs that facilitate operational safety and infrastructure reliability.

In this lecture, you will embark on the essential process of modeling a mainline rail corridor within Bentley OpenRail Designer. The lesson begins by introducing the fundamental concept of creating a corridor, which serves as a 3D representation of the rail alignment integrating both horizontal and vertical geometry. This integration is crucial for ensuring the rail design reflects actual field conditions and meets project requirements.

The workflow details how to select the main track alignment and initiate the corridor creation using the Element Selection tool. Various user interface elements are highlighted, such as the pop-up contextual menu and Ribbon tools, to streamline the corridor creation. Key technical decisions include setting the feature definition to a specific corridor named "Real Final," which aligns with professional standards for naming and version control during design iterations.

Attention is given to steps involving heads-up prompting for setting corridor parameters like profile alignment, stationing ranges, and drop intervals for model elements. This careful configuration ensures the created corridor accurately represents the intended track design. Locking the start and end stations with the “Alt” key and setting drop intervals to 10 units illustrates precision management in the modeling process.

Once established, the lecture covers the next phase: visualizing and interacting with the corridor in both 2D and 3D views. Zooming in on corridor objects and template depth drop indicators enables detailed selection and editing. Setting up side-by-side 2D and 3D models in the view windows provides a comprehensive perspective, allowing users to analyze design elements and their real-world spatial context simultaneously.

The explanation clarifies that within the DGN file, OpenRail Designer supports concurrent 2D and 3D models, making this setup ideal for corridor work. This dual-view approach aids in verifying the proper integration of design components and streamlines editing workflows. Finally, learners are encouraged to explore the newly created 3D model, fostering a hands-on understanding of the corridor structure and its components.

Upcoming sessions will build upon this foundation by demonstrating how to modify templates within modeling ranges and develop advanced siding designs using specialized templates. These additional modules deepen proficiency to create detailed, realistic rail models suited for comprehensive infrastructure projects.

Key topics covered in this lecture:

• Introduction to rail corridor modeling concepts.

• Selecting alignments and using UI tools for corridor creation.

• Configuring feature definitions and corridor parameters with heads-up prompts.

• Accurate station locking and drop interval settings for elements.

• Visualizing corridors using template depth drop indicators.

• Setting up dual 2D and 3D views for comprehensive corridor inspection.

• Understanding DGN file capabilities for simultaneous 2D and 3D models.

• Exploration and interaction with 3D rail corridor models.

Practical value in rail design and modeling:

• Equips learners to build precise 3D rail corridor models integrating horizontal and vertical geometry.

• Teaches efficient use of OpenRail Designer tools and interface for corridor creation.

• Improves ability to set and manage corridor parameters essential to detailed rail design.

• Supports visualization techniques that enhance design accuracy and quality control.

• Prepares learners for subsequent advanced modeling tasks including siding and template modifications.

• Enables understanding of 2D and 3D data integration within digital rail infrastructure projects.

• Facilitates hands-on experience critical for practical application in professional rail design.

By the end of this lecture, learners will confidently create and visually analyze a 3D rail corridor model, forming a core skill set for digital rail design projects using Bentley OpenRail Designer. This foundational knowledge sets the stage for mastering more complex modeling and design workflows critical to contemporary rail infrastructure development.

In this lecture, we explore the important process of assigning cant to the 3D rail model within Bentley OpenRail Designer. Cant, or the superelevation of the track, is critical for ensuring safe and comfortable train operations, particularly on curves where it compensates for lateral acceleration. The lecture begins by revisiting the earlier calculation of cant values and then focuses on the practical steps for assigning these cant values to the corridor model using specific point controls embedded in the design template.

The workflow involves selecting the rail cant tool and targeting the main track corridor where the cant will be applied. Assigning cant requires identifying key points on the rail template, including the left cant point (Rail Cant L), the center cant point (CL), and the right cant point (Rail Cant R). Proper assignment depends on matching these control points correctly to the cant alignment. The instructor guides learners through entering the start and end stations for the cant assignment, ensuring the cant is applied accurately along the desired track segment.

After successfully assigning the cant, the lecture transitions to a practical demonstration of modeling geometric elements within the corridor, specifically how to incorporate a tunnel in a part of the rail alignment where a large cut was present. This shows the flexibility of the corridor and template system, allowing for seamless modifications to the track design. The process includes replacing the existing template within the cut area by adding a tunnel template. The instructor outlines the interface steps to add a new template drop, how to select the appropriate tunnel template from the library, and setting accurate start and end station values to define the tunnel’s extent along the corridor.

Key technical decisions during this exercise include setting the drop interval for the template insertion. By choosing a shorter drop interval (e.g., 2 units), the model better represents transition zones around the tunnel where the corridor template changes from open cut to tunnel sections. This level of refinement is necessary for realistic and precise 3D rail modeling. Finally, the lecture concludes with reviewing the updated corridor in the 3D view, examining the tunnel integration in conjunction with the main track template on each side, showing a complete and continuous model ready for further design or analysis tasks.

Key topics covered in this lecture:

• Review and practical application of cant assignment to corridor models

• Identification and use of point controls on rail templates (Left, Center, Right cant points)

• Setting start and end stations for cant assignment precision

• Adding new template drops within rail corridors to modify geometry

• Selection of tunnel templates and integration into rail design

• Managing drop intervals for accurate modeling of transition zones

• 3D visualization and verification of design changes including tunnels

• Workflow for combining multiple track templates within one corridor

Practical value in rail design and infrastructure modeling:

• Ensure cant values are properly assigned to reflect real-world track superelevation

• Allow dynamic modification of corridor templates to include critical structures like tunnels

• Improve accuracy of rail alignment models by managing drop intervals thoughtfully

• Visualize complex design elements in 3D to validate construction feasibility

• Integrate multiple track elements seamlessly for comprehensive rail designs

• Adapt corridor designs efficiently when encountering varying terrain and structures

• Employ software tools to streamline the iterative design and review process

Upon completing this lecture, learners will be able to confidently assign cant to their rail corridor models, use template drops to introduce tunnel structures in precise locations, and manage design parameters to ensure realistic and functional rail infrastructure models. This skill set is essential for rail designers aiming to produce professional and constructible railway alignments using Bentley OpenRail Designer.

In this lecture, we focus on the detailed process of modeling sidings within the rail design project using Bentley OpenRail Designer. Sidings are auxiliary tracks alongside the main rail track, and modeling them accurately is critical for effective design and operational planning. Here, we handle two tracks in the siding area: the main track and the siding track, each with its own ballast layer. Understanding how to integrate these tracks into a single cohesive rail corridor model allows designers to simulate rail operations more realistically.

The workflow begins with applying rule-based templates designed to support both the main track and the branch (siding) track with their respective ballast layers. This approach streamlines the modeling process by standardizing how the track and its adjacent components are constructed and maintained. Using these templates simplifies managing complex rail features and ensures consistent geometry across the entire rail corridor.

A crucial part of this modeling is the implementation of point controls. Point controls act as dynamic references that help follow the siding track geometry precisely within the corridor model. They enable the template to adapt automatically to the specific alignment of the siding track, which is necessary since sidings often diverge from the main alignment. This ensures the model reflects real-world track positioning accurately.

Throughout the lecture, detailed steps are provided on how to insert the siding template drops at specific stations along the corridor using the Corridor Objects dialog. This includes selecting the correct template "Reel Single Track Siding right," setting precise start and end stations, and adjusting the drop interval to apply the template consistently along the siding section. These technical decisions ensure the corridor is segmented effectively for detailed 3D modeling.

The model updates reveal that initially, the siding track and turnouts are not visible because the template has not yet been associated with the siding geometry. Therefore, the next critical phase is to define the point control settings for the siding. By setting the point controls with accurate station limits and linking them properly in the 2D corridor views, the siding geometry is successfully incorporated into the 3D corridor model.

User interaction with dynamic cross-section tools enhances the workflow by allowing visualization and navigation along the corridor's cross sections. The ability to move through cross sections step-by-step is vital for detecting potential modeling issues and ensuring the siding geometry’s correctness. This interactive inspection supports fine-tuning the design before progressing to later phases.

After setting these point controls and confirming their parameters both in the tool settings dialog and the heads-up display, the corridor model updates automatically. This seamless integration between geometry definition and model visualization is a strength of Bentley OpenRail Designer, enabling efficient and precise rail infrastructure modeling with minimal manual adjustments.

Key topics covered in this lecture:

• Difference between main track and siding track ballast layers

• Use of rule-based templates for dual track modeling

• Inserting and configuring template drops in corridor objects

• Defining point controls to link siding geometry dynamically

• Utilizing dynamic cross-section tools for corridor review

• Setting precise start and end stations for templates and point controls

• Updating and validating the 3D siding model in the corridor

• Workflow integration between 2D corridor control and 3D model visualization

Practical value of this lecture in rail design:

• Enables accurate representation of siding track geometry within the main corridor

• Supports detailed ballast layer modeling for both main and branch tracks

• Improves the efficiency of modeling complex track layouts using templates

• Facilitates alignment and design verification with dynamic cross-section tools

• Connects geometry controls with model updates automatically for better precision

• Prepares learners for real-world scenarios involving track divergence and siding construction

• Demonstrates how to handle multiple track layers in a coordinated design environment

By the end of this lecture, learners will understand how to model siding areas by combining main and branch tracks using Bentley OpenRail Designer templates and point controls. They will be able to set up templates, define point controls matching siding geometry, and validate their designs through 2D and 3D corridor views. This knowledge is essential for creating comprehensive rail models that reflect realistic track layouts, improving both design accuracy and functionality.

In this lecture, you will delve into the process of creating sleepers along the rail track alignment using Bentley OpenRail Designer. Sleepers, also known as railroad ties, are essential track components that support and maintain the correct gauge and alignment of rails. Understanding how to model them accurately in a 3D environment is vital for producing realistic and professional rail designs.

The session begins by introducing the 'Create Sleepers' tool, which automates the placement of sleepers along the main track alignment. This tool generates a detailed 3D mesh model of the sleepers, providing visual and structural context within the overall rail design model. Learning to utilize this feature effectively allows designers to enhance model fidelity and communicate design details more clearly.

As you proceed, you will learn how to access and configure the Create Sleepers toolbox. This involves selecting the rail and rails option followed by activating the create sleepers command. Within the toolbox, you will be guided on setting precise sleeper dimensions and features, ensuring your sleepers conform to project and industry standards. This step reflects important practical considerations since sleepers vary in size and shape depending on materials, rail types, and regional regulations.

The workflow includes responding to header prompts that guide you through the parameterization and placement of sleepers along the alignment. The interface is designed to be user-friendly, facilitating quick iteration and modifications. Additionally, you will learn about key nuances, such as the fact that sleepers are only represented in the 3D model and dynamic cross-sections but do not appear in 2D plan views. This distinction helps manage model clarity and performance, keeping 2D drawings focused on other design elements while allowing immersive 3D visualization.

Throughout the lecture, practical tips are shared to optimize the modeling process and avoid common pitfalls. By mastering this function, you will be able to build more complete rail infrastructure models that include track components essential for construction and analysis. This knowledge integrates seamlessly into the final stages of siding, modeling, and track element design covered in this course section.

The ability to create accurate and adjustable sleeper models empowers you to simulate real-world track conditions closely. This improves collaboration with engineers, fabricators, and construction teams who rely on precise 3D models for planning and execution.

Key topics covered in this lecture:

• Introduction to the Create Sleepers tool in OpenRail Designer

• Generating 3D mesh models of sleepers along track alignments

• Accessing and using the Create Sleepers toolbox

• Setting sleeper dimensions and feature parameters

• Responding to header prompts for sleeper placement

• Understanding the 3D-only representation of sleepers versus 2D plans

• Viewing sleepers in dynamic cross sections and 3D models

• Practical tips for efficient sleeper modeling workflow

Practical value of this lecture for rail design professionals:

• Enable detailed rail model construction with realistic track components

• Improve visualization of track structure for design validation and presentation

• Reduce errors by parameterizing sleeper dimensions and placement

• Support interdisciplinary collaboration with comprehensive 3D models

• Facilitate integration of sleepers into overall rail design projects

• Enhance model accuracy for construction and maintenance planning

• Save time through automated sleeper creation tools and workflows

By the end of this lecture, learners will be proficient in creating and managing sleeper elements within Bentley OpenRail Designer, adding an important dimension of authenticity and detail to their rail infrastructure projects. You will be able to generate precise 3D sleeper models aligned with the rails, improving the completeness and quality of your designs.

In this lecture, you will learn how to create and model rails along the main track alignment using the Create Rails tool in Bentley OpenRail Designer. The process involves generating precise left and right rail geometries that accurately follow the horizontal, vertical, and cant alignments, as well as track widening specifications. This ensures that the rail design meets the necessary standards for real-world railway constructions.

The Create Rails tool facilitates the creation of complex rail geometry elements, which include components representing each individual rail element. Additionally, the tool provides the capability to generate a detailed 3D mesh model of the rails, offering a comprehensive visualization of the track structure. This 3D representation is essential for analyzing and validating the rail design in both two-dimensional and dynamic cross-sectional views.

The workflow begins with activating the Create Rails tool and accessing its toolbox. You will be guided to toggle the option to create a rail mesh and select an appropriate template for the rail component. Templates such as "Rail Single" are provided to standardize rail features and ensure consistency. Assigning feature definitions for elements such as the rail inside edge and rail centerline is critical for defining the exact placement and alignment of each rail.

Technical attention is given to setting name prefixes and following the user interface prompts carefully, creating a smooth and error-free modeling process. Important practical tips are also highlighted, including the need for the rail geometry to represent the top center point of the rail, thereby ensuring accuracy in mesh creation. It is equally important for the selected template’s origin to correspond to this same location to maintain consistency across the model components.

The creation procedure is repeated for both rails: first the right rail using the "Rail RHR Track 1" feature definition, and then the left rail using the "Rail LHR Track 1" feature definition. Reviewing the rail geometry is done through multiple perspectives, including 2D model views, 3D model visualizations, and dynamic cross sections, which together provide a robust understanding of the track’s spatial configuration.

This lecture equips you with the foundational skills to accurately design and visualize rail components, an essential part of modern rail infrastructure projects.

Key Topics Covered in This Lecture

• Introduction to the Create Rails tool and its functions

• Generating left and right rail geometry aligned with track parameters

• Creating 3D mesh models for detailed visualization

• Selecting and applying rail templates for consistent feature definitions

• Assigning correct feature definitions like rail inside edge and centerline

• Setting up naming conventions and following interface prompts

• Understanding rail geometry origin points for precise modeling

• Verification through 2D, 3D, and dynamic cross-section views

Practical Value of This Lecture for Rail Design

• Enables precise rail geometry creation aligned with design standards

• Supports building accurate and detailed 3D rail models for analysis

• Improves ability to apply templates ensuring replicability and consistency

• Facilitates verification of rail alignment and positioning in multiple views

• Enhances understanding of mesh origins to prevent modeling errors

• Prepares learners to integrate rail design into comprehensive track modeling

• Strengthens skills critical for infrastructure design and construction planning

By the end of this lesson, you will be able to confidently create detailed rail geometries and 3D rail mesh models in Bentley OpenRail Designer. This will allow you to accurately represent real-world track alignments and ensure that rail components are precisely positioned and visualized across multiple views, thereby enhancing the quality and reliability of your rail infrastructure designs.

This final session offers a concise question and answer format to reinforce your understanding of key concepts covered throughout the OpenRail Designer course. It is designed to recap essential commands and workflows that are fundamental to rail design using the software.

You will review important processes such as creating regression lines from survey points, the correct timing for adding spirals in complex geometry creation, and how to manage varying speeds along a track using speed tables.

This lesson closes the course by summarizing critical points and ensuring you feel confident in applying your newly acquired skills.

Key topics covered:

• Creating regression lines from survey points

• Timing for adding spirals in complex geometry

• Managing multiple speed values along a rail track

• Review of fundamental OpenRail Designer commands

Practical value in rail design:

• Clarifies usage of core OpenRail Designer features

• Reinforces best practices for track geometry creation

• Ensures understanding of speed table applications for real projects

• Prepares learners for confident use of the software in professional contexts

After this session, learners will have a solid grasp of fundamental OpenRail Designer commands and workflows. They will be ready to apply these concepts to real-world rail design projects with confidence.