Bentley RailtRack

Alignment Optimization for Maintenance and Design

Bentley Rail Track is a comprehensive solution for rail infrastructure design and maintenance. The software

delivers a high degree of automation to well-established workflows, with the added power of an integrated

geometry model that brings into play all aspects of the alignment. This results in significant productivity

improvements and time savings – while offering users greater opportunity to optimize the geometry to reduce

project costs. Available in many languages, Bentley Rail Track can be configured to support a wide range of

international standards.

Adapt to Any Project or Workflow

Bentley Rail Track adapts readily to virtually any rail design and maintenance workflow, increasing efficiency.

The software is suitable for designing light rail, heavy rail, and high-speed rail – including MAG-LEV. It addresses

track geometry (yard, depot, and station layouts) and earthworks and ballast. Users can generate realistic 3D

models for analysis and project visualization, create reports for cost estimates and setting-out, and produce fully

annotated project drawings/deliverables for client approval and construction.

Best-of-Class Solution

A robust toolset enables users to perform regression analysis, horizontal and cant/super-elevation design,

and alignment analysis as concurrent, integrated activities. Turnouts are placed from a user-definable library,

with fundamental types based on international standards. Advanced functionality such as regression analysis,

curvature diagrams, slew diagrams, interactive track editing, and automated cant/superelevation analysis

completes this best-of-class solution.

Easy to Use

The software provides an intuitive graphical user interface that gives easy access to an impressive set of

geometry functionality. Interactive tools enable users to rapidly place, modify, and extend alignments graphically

onscreen. Users can configure their own toolbars to group together commonly used tools for repetitive tasks or

to organize the tools into a workflow sequence. Context-sensitive help is available at all times, and user prompts

display to assist with particular operations.

Survey Data and Analysis

The Text Import Wizard streamlines the importing of track geometry data for the existing alignment. This may

be survey data for the left and right rails or for the track centerline. Tools provided in the system automate the

sorting and conversion of rail survey data into a horizontal, vertical, and cant alignment ready for regression

analysis.

Regression Analysis

Bentley Rail Track employs a least squares method of regression analysis of single and multiple elements

to calculate best-fit alignments. Regression points are derived from centerline or rail survey, and analyzed

according to user-defined criteria for fixity and weighting to limit movement at critical minimum clearance points.

Users can identify groups of points to be included for regression from the combined curvature-and-cant diagram,

enabling identification of the existing alignment elements. The inclusion of the cant data provides a more precise

match to existing geometry, optimizing the new design alignment while limiting slews and lifts.

This 2D/3D solution adapts readily to any rail design and maintenance

workflow.

Integrated cant and horizontal design ensures compliance

with design standards.

Least squares regression analysis calculates best-fit alignments.

Visit us on the Web for more information about Bentley solutions and services.

www.bentley.com

Alignment Design

The software provides a full set of tools for horizontal, cant, and vertical alignment design – either by the

points-of-intersection method or the element method. Users can move freely between either of these methods

at any point during the design process. The alignment design tools contain a comprehensive set of mathematical

algorithms covering the full array of horizontal transition spiral types along with their associated cant transition

algorithms. Users can describe vertical alignments either by vertical parabolas or by circular vertical curves with

vertical transitions.

Integrated Cant Design

The integration of the cant/superelevation design with the horizontal design process gives users immediate

visual confirmation of compliance with design standards. Built-in equilibrium equations compute equilibrium

cant, applied cant, cant deficiency, rate of change of applied cant, rate of change of cant deficiency, and cant

gradient. Transition lengths and applied cant can then be adjusted to optimize the alignment to all cant criteria.

Users can also deploy virtual transitions where horizontal transitions are not required.

Library of Turnouts/Switch and Crossings

Bentley Rail Track provides comprehensive capabilities for the placement of turnouts/switch and crossings as

parametric components. This technology saves time in the creation of complex geometries based on complex

rules for bending/flexing. Users can quickly place turnouts from delivered libraries comprising standard turnouts

from many countries. Alternatively, users can add their own designs to the library. The software handles turnouts

as well as single and double slips and diamond crossings. The Connection Editor makes fast work of connecting

turnouts to create crossovers and joining turnouts to other tracks.

Design Validation, Annotation, and Reporting

Various design checking tools highlight areas of nonconformance with design standards, allowing the user

to quickly identify and resolve problems. Designs can also be validated visually with tools such as curvature

diagrams, lift diagrams, and slew diagrams, and numerically using plan and profile annotation. The software

uses XML/XSL technology to report on all geometries (horizontal, vertical, and cant) – delivering greater flexibility

in report format creation.

Flexible Earthworks Modeling

Bentley Rail Track offers proven earthworks modeling technology developed for the Bentley Civil transportation

software. Designers can optimize the earthwork to reduce embankment/excavation or to minimize the

environmental impact on adjacent properties and facilities. Comprehensive surface editing, profile creation, and

cross section tools provide flexibility in the design of ballast, formation, roadway, and earthworks.

Support for Light Rail

A set of tools provides for the particular requirements of light rail design, fabrication, and construction. The

software creates detailed light rail elements: rails, joints, switch points, crossing points, distance keepers, and

so on. Users can produce the full array of drawings, reports, and specifications for jointed rail, pre-bent rail, and

multiple rail types.

Quickly place turnouts from libraries of standard turnouts

from many countries.

Validate designs visually and numerically using plan and

profile annotation.

Optimize design of ballast, formation, roadway,

and earthworks.

Visit us on the Web for more information about Bentley solutions and services.

www.bentley.com

MAInTEnAnCE WoRkFLoW

Data ImportGeometry or surface data in virtually any ASCII format

with a Text Import Wizard

Versine

Industry-standard LandXML geometry (horizontal, vertical,

and cant) and surface data

Regression Analysis Horizontal and vertical alignments from survey data utiliz-

ing least squares computations

Simultaneous regression of single or multiple elements

with the Connection Editor

Single element regression or heads-up point selection and

automatic single-element regression

Advanced multi-element regression with all supported

element types (lines, circular arcs, and transition spirals)

Validation of existing survey data based on user-specified

criteria (minimum/maximum distance between points,

angular differences, gradient differences, and so on)

Conversion of surveyed rails to centerline

Data selection and sorting

Data editing for inclusion, exclusion, and weighting

Rail Curvature Diagram

Automatically generates transition points

Inclusion of cant as an improved source of data

for element determination

Design ValidationCurvature diagrams and/or slew diagrams

Plan and profile annotation

XSL/XML reporting (horizontal alignment, vertical align-

ment, and cant)

Export to FieldPlasser & Theurer tampers (ALC and WinALC systems)

Matisa tampers (the PALAS system)

Trimble

Leica

LandXML

Design WorkflowInteractive Geometry

Robust sets of interactive geometry tools for on-screen

alignment generation

Tools using methods and principles specific to rail design

and civil engineering

Check Integrity tool for location and removal of alignment

discontinuities

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Horizontal AlignmentLines

Circular arcs (arc and chord definition)

Multiple spiral transition definitions, including:

Clothoid

Cubic parabola

Bloss

Biquadratic parabola

Sinusoidal

Cosine

Viennese-Austria

Vertical AlignmentLines

Parabola

Circular arcs

Vertical clothoid transition spirals

CantEquilibrium equations ( D = 11.8 * V2 / R )

Computation of equilibrium cant, applied cant, cant

deficiency, rate of change of applied cant, rate of change

of cant deficiency, and cant gradient

ASCII tables

Transitions

Transitions that match the supported horizontal

transitions

Virtual transitions (where horizontal transitions are

not required but cant is required)

Design checks incorporated in editing

Cant integrated into all horizontal curve edits

TurnoutsTurnouts in the most popular configurations:

Single branch

Double branch

Single slip

Double slip

Diamond crossings

Support for multiple bending methods

Swiss bending practice

German bending practice

UK tangent and offset practice

Library of industry-standard turnouts

German standards

German light rail standards

UK 113a and RT60 standards

AREMA standards

Tools for user-defined standards

Interactive creation and editing

Turnout Connection Editor for connecting turnouts and

editing connections

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Bentley Rail tRack at-a-Glance

Validate design visually with curvature, lift, and slew diagrams.

Turnouts/switch and crossings are placed as parametric components.

Special tools streamline light rail design, fabrication, and construction.

Visit us on the Web for more information about Bentley solutions and services.

www.bentley.com

© 2007 Bentley Systems, Incorporated. Bentley, the “B” Bentley logo, Fiber, Geo Web Publisher and Inside Plant, are either registered or unregistered trademarks or service marks of Bentley Systems, Incorporated or one of its direct or indirect wholly-owned subsidiaries. All other trademarks are the property of their respective owners. All other brands and product names are trademarks of their respective owners. BAA014560-1/0001 9/06

Bentley Rail tRack

SyStem RequiRementS

Prerequisites:

MicroStation V8 XM Edition,

MicroStation V8 2004 Edition,

AutoCAD 2004, AutoCAD 2005, or

AutoCAD2006

Processor

Intel® Pentium®-based or AMD

Athlon™-based PC or workstation

operating System

Microsoft Windows® 2000 Profes-

sional (SP4 or higher) or Microsoft

Windows XP Professional (SP2 or

higher)

Memory

512MB (more memory typically

results in better performance)

Disk Space

310MB minimum free disk space

Internet Browser

Microsoft Internet Explorer 5 or

greater

Internet Explorer 6.0 is

required to view XML

Reports

Cipher Strength: 128-bit

(required for Digital Rights)

Input Device

Mouse or digitizing tablet (digitizing

tablet requires vendor-supplied

WINTAB driver or Bentley’s Digitizer

Tablet Interface, included with the

MicroStation installation)

output device

Supports most industry-standard

devices, including output devices

supported by Windows

Video

Multi-monitor configurations

supported with Windows XP and

Windows 2000

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aBout Bentley

Bentley Systems, Incorporated provides software for the lifecycle of the world’s infrastructure. The company’s comprehensive

portfolio for the building, plant, civil, and geospatial verticals spans architecture, engineering, construction (AEC) and operations.

With 2005 revenues of $336 million and more than 2,000 colleagues around the world, Bentley is the leading provider of AEC

software to the Engineering News-Record Top 500 Design Firms and major owner-operators.

For more information, visit www.bentley.com or call 1-800-BENTLEY.

Surface ModelingProfile Generator

Easy profile creation across multiple surfaces

Display and annotation of profiles and associated

data such as vertical curves, superelevation

diagrams, and digital terrain modeling (DTM) features

Feature-based DTM

Flexible, double-precision

Intelligent features

Representation and labeling of the DTM based on

feature definition

Proper display and labeling of terrain features

throughout the model

Typical Section Libraries

Custom creation of typical sections for generating

cross sections on the fly

Cut/fill tables and decision tables for automatic

adjustment of the model to predefined conditions

InteroperabilitySeamless integration between CAD platforms - in both

DGN and DWG environments

Integration with Bentley® ProjectWise® to bring collab-

orative design data to the entire project team in a secure

environment

Integration with Digital InterPlot®, enabling automated

plot set generation and Web-based access to plot archives

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Bentley Worldwide Headquarters

Bentley Systems, Incorporated

Exton, PA, USA

+1 800 BENTLEY

+1 610 458 5000

Design checking tools pinpoint areas of non-conformance.

Bentley International Headquarters

Bentley Systems Europe B.V.

JC Hoofddorp

THE NETHERLANDS

+31 23 556 0560