Engineering Specification

Track

Engineering Specification
SPC 203

TRACK DESIGN

Version 1.6

Issued June 2012

Reconfirmed 03 July 2019

Owner: Chief Engineer, Track

Approved Andrew Wilson Authorised Malcolm Kerr

by: Technical Specialist by: Chief Engineer
Wheel/Rail Track

Disclaimer
This document was prepared for use on the RailCorp Network only.
RailCorp makes no warranties, express or implied, that compliance with the contents of this document shall be
sufficient to ensure safe systems or work or operation. It is the document user’s sole responsibility to ensure that the
copy of the document it is viewing is the current version of the document as in use by RailCorp.
RailCorp accepts no liability whatsoever in relation to the use of this document by any party, and RailCorp excludes
any liability which arises in any manner by the use of this document.
Copyright
The information in this document is protected by Copyright and no part of this document may be reproduced, altered,
stored or transmitted by any person without the prior consent of RailCorp.

UNCONTROLLED WHEN PRINTED Page 1 of 54

RailCorp Engineering Specification — Track
Track Design SPC 203

Document control

Version Date Summary of change

1 December 2008 First issue as a RailCorp document.
1.1 May 2009 Complete document – Format Change; Appendix A - Track
Services Checklist ED-001 – Addition of reference to
Appendix L Guidelines for Catchpoint Design; Appendix A -
Concept Design Guidelines Checklist ED-002 – Addition of
reference to Appendix L Guidelines for Catchpoint Design;
Appendix L - New appendix - Guidelines for catchpoint
design
1.2 December 2009 Change of titles to suit organisation changes
1.3 July 2010 Appendix H - Change Figure A7-8 to more appropriate
example
1.4 February 2011 Section 5.2.6 & 5.2.7 Addition of requirements for detailing
joints/welds behind monobloc crossings; App B - Change
“Acute” crossing angles to “Blunt” crossing angles; App D -
Add Checkbox for “Location of joints and/or welds behind
monobloc crossings shown” to Tangential & Conventional
Timber & Plating Layout – Documentation Checklists
1.5 August 2011 Section 5.2.7 – addition of requirements for angle of attack
and switch pad protectors; Appendix B - Addition of switch
pad protectors to guidelines
1.6 June 2012 Changes detailed in Summary table below

Summary of changes from previous version

Summary of change Section
Document
Control changes
Control
Reformatted to new template All
Added guidance on transition ramp limits Appendix B

© RailCorp Page 2 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Contents

1  Scope and Application ...........................................................................................................4 

2  References...............................................................................................................................4 
2.1  Australian and International Standards.....................................................................................4 
2.2  RailCorp Documents .................................................................................................................4 
2.3  Other References......................................................................................................................5 
2.4  Definitions .................................................................................................................................5 
3  General Requirements............................................................................................................6 
3.1  Review of Brief/Specification ....................................................................................................6 
3.2  Design Personnel......................................................................................................................7 
3.3  Design Procedures....................................................................................................................7 
3.4  Track Design .............................................................................................................................7 
3.5  Technical Review of External Designs......................................................................................9 
3.6  Acceptance ...............................................................................................................................9 
4  Design Requirements .............................................................................................................9 
5  Documentation and Drawings .............................................................................................10 
5.1  General Requirements ............................................................................................................10 
5.2  Drawing Presentation Standards ............................................................................................11 
5.3  Control of Drawings.................................................................................................................17 
Appendix A  Track Services Checklist ......................................................................................21 
Appendix B  Concept Design Guidelines..................................................................................25 
Appendix C  Final Design Guidelines ........................................................................................27 
Appendix D  Documentation Checklists ...................................................................................29 
Appendix E  Verification Checklist ............................................................................................34 
Appendix F  Plan Presentation – Horizontal Alignment Design.............................................35 
Appendix G  Plan Presentation – Track Setting Out Details ...................................................39 
Appendix H  Plan Presentation – Vertical Alignment Design .................................................42 
Appendix I  Plan Presentation – Field Layout for Tangential Turnouts ...............................45 
Appendix J  Plan Presentation – Tie Layout and Details for Tangential
Turnouts .................................................................................................................48 
Appendix K  Plan Presentation – Timber and Planting for Conventional
Turnouts .................................................................................................................51 
Appendix L  Guidelines for Catchpoint Design........................................................................54 

© RailCorp Page 3 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

1 Scope and Application

This Specification sets out RailCorp's requirements for the preparation, content and
presentation of track design documentation and drawings by designers external to
RailCorp.

It covers the following track design activities:

• Horizontal Alignment Design

• Vertical Alignment Design
• Turnout & Special Trackwork Components (Alignment) Design
• Special Trackwork (Manufacture / Installation)
• Permanent Speed Design
• Transit Space Studies (including Cross Sections)

It also provides guidance on design through the use of guidance notes and model
checklists.

It is suitable for use as a general technical specification. Particular requirements may

need to be added for specific works.

It DOES NOT include the following items that may be required in any particular contract:

• Commercial conditions
• Project management and supervision;

The specification applies to the design of all new and altered track infrastructure to be
installed in RailCorp's network.

2 References

2.1 Australian and International Standards

Nil

2.2 RailCorp Documents

Network Rules
OS 001 IM – Train Operating Conditions Manual (TOC Manual)
ESC 200 – Track System
ESC 210 – Track Geometry and Stability
ESC 215 – Transit Space
ESC 240 – Ballast
ESC 250 – Turnouts and Special Trackwork
ESC 410 – Earthworks and Formation
SPC 204 - Track Product Approval
ED 0022P - CAD and Drafting Manual – All Design Areas
ED 0026P - CAD and Drafting Manual - Track
EM 0149 - CAD and Drafting Manual
EM 0241 - Engineering Design Competency System

© RailCorp Page 4 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

2.3 Other References

Nil

2.4 Definitions
General Terminology in this specification is detailed in Engineering Standard ESC 200.

The following particular definitions apply to this specification

RailCorp Rail Corporation of New South Wales (hereinafter referred to as

"RailCorp"), the owner of the infrastructure.
Maintenance District An area of the RailCorp network.
External design firm The person, company, corporation or authority which is
contracted to perform the Works. The term "External design
firm" shall be taken to include all employees and sub-
contractors under the control of the External design firm.
Chief Engineer Track The person responsible for the acceptance of track designs for
installation on the RailCorp network.
Designer a suitably experienced competent track design engineer who
has the responsibility for:
• undertaking the design,
• ensuring design achieves the required system
performance, and
• ensuring the safety and integrity of the design.
The designer must have design authority for the work issued by
RailCorp and must sign-off the design and all design drawings.
Checker a suitably experienced competent track design engineer who
has the responsibility for:
• checking the design,
• verifying calculations and methodologies and
• verifying that the design achieves the required system
performance and safety and integrity.
The design checker must have design authority for the work
issued by RailCorp and must sign-off the design and all design
drawings
Approver a person empowered by the external design firm to release
(or equivalent) designs carried out and verify the external design firm’s
procedures and protocols have been carried out. Approvers
may carry out some level of final “sanity” checking at the
discretion of the external design firm. Design Authority from
RailCorp is not required to be an Approver. The external design
firm is accountable for utilising appropriate persons for this role.
Independent Checker This is an additional role as for Checker but with the added
(sometimes referred proviso that the person must be independent from the group
to as Independent carrying out the design. In addition the verification may not
Verifier(Note 1) involve directly checking the design calculations but must
involve equivalent calculations sufficient to establish the
integrity of the design.
Design Verification Design verification is the process of reviewing and attesting that
the output of each design stage conforms to design input
requirements for that stage. It is conducted before the
documentation is released for the stage. Design verification is
not to be considered a single sign-off.
Design verification includes the following activities:
Designer sign-off
The designer is responsible for achieving the required design
outcome

© RailCorp Page 5 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Design checking
• Design checks are systematic reviews of the activities
undertaken by a designer.
Technical Reviews (if required)
• Technical Reviews for projects take place at or close to
the completion of each design phase.
Peer Technical Reviews (if required)
• Similar to Technical Reviews, Peer Reviews will be
conducted within the External design firm's
organisation.
Independent Design checking (if required)
Design approval
• Design approval is separate and distinct from design
checking.
• Design approval is required prior to the release of
design documentation for construction or alteration of
the asset.
Engineering Authority Track design, review and verification shall only be performed by
persons whose qualifications and experience have been
submitted and accepted by the Chief Engineer Track to perform
the specified work.
Drawings Layouts, plans, diagrams, tables, schematics and the like that
set out the design and/or configuration of track infrastructure
assets (e.g. physical dimensions and composition, temporal
and/or spatial arrangements and physical interconnections).
Documents Technical documents relating to the infrastructure asset. It
DOES NOT include documents relating to correspondence,
administration, finance, marketing, human resource
management, project management, contract management and
the like.
General review General review at a high level, rather than a detailed review.
Broad verification of general thrust, obvious anomalies including
with respect to interfaces with RailCorp.
Acceptance Acknowledgment that the design meets RailCorp's specified
requirements for inclusion as part of RailCorp's track
infrastructure and that all required design elements have been
completed.
Note 1: An Independent Verifier undertakes part of the process of Design Verification.

3 General Requirements

3.1 Review of Brief/Specification

The client is primarily responsible for developing the technical brief/specification.

Where projects are managed by RailCorp, the Chief Engineer Track will develop the track
technical requirements of the brief, or if developed by others, will approve them.

Where a project is managed by TCA or other external agency, the Chief Engineer Track
will review the Brief and issue a "no objection".

In either case the Chief Engineer Track may;

1. Nominate the type and extent of reviews to be undertaken at each stage of the
design process. The extent of review will be dependent on the perceived risk to
RailCorp of the design solutions developed in satisfying the nominated technical
brief/specification.

© RailCorp Page 6 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

2. Nominate Safety critical design elements that will be subject to a process of

independent review.

3. Nominate design elements requiring separate acceptance.

3.2 Design Personnel

Track design activities detailed in this specification may only be undertaken by persons
with the appropriate Engineering Authority for each task. RailCorp's requirements for
allocation of Engineering Authority are detailed in Engineering Manual EM 0241 –
"Engineering Design Competency System"

The allocation of Engineering Authority for design requires that:

• A person is competent to undertake the particular design activity

• The person is in a position that requires this Authority to carry out the design tasks.
• Established procedures exist for carrying out the tasks.

The external design firm is primarily responsible for identification of resources to

undertake the design

On behalf of RailCorp the Chief Engineer Track will

1. Undertake a general review of the competencies of the design personnel

nominated for the project/task (including changes to nominated designers).
Where necessary he will also undertake a detailed review.

2. Sign an agreement to proceed that confers engineering design authority on the

selected staff resources for the nominated technical brief/specification.

3.3 Design Procedures

The External design firm shall have design procedures that include systems to monitor
the competence and suitability of personnel for whom they may seek Engineering
Authority.

RailCorp may, at its discretion, audit the system and review independent audit reports
supplied by design firm(s) to confirm the existence and appropriateness of design
procedures and assignment of design personnel.

3.4 Track Design

The external design firm's design resources are primarily responsible for design
development and verification.

© RailCorp Page 7 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Guidance Note
As a minimum track designs carried out for RailCorp by External Design Firms must
have the following:
• Designer: The designer must have design authority for the work issued by
RailCorp and must sign-off the design and all design drawings.
• Checker: The checker must have design authority for the work issued by
RailCorp and must sign-off the design and all design drawings.
• Approver (or equivalent): The approver must sign-off the design and all
drawings.
Note: The Checker and the Designer cannot be the same person.

In addition RailCorp may specify the requirement for additional independent checking/
verification.
Independent Checker (sometimes referred to as Independent Verifier); must sign-off the
design and all drawings or alternatively provide a separate signed endorsement which
references all the relevant design documents. A form of Independent Verification
Checklist is provided in Appendix E. Specific approval must be obtained from RailCorp
where an external design firm seeks to use an independent checker from a different
work group in the same organisation as the designer.

The external design firm shall:

1. Be responsible for the provision and submission of all documents and drawings
necessary for the satisfactory completion and performance of the Works under
the Contract.

2. Nominate in the design record the person who has undertaken each design
activity.

3. Provide a safe, reliable and fit-for-purpose track design in accordance with the
requirements set out in this Specification, referenced standards and other
documents forming the contract.

4. Comply with the requirements, practices and procedures set out or referenced in
this Specification, except as otherwise expressly approved in writing by the Chief
Engineer Track or his/her duly appointed Representative.

5. Produce and present documents and drawings in accordance with RailCorp's

documentation and drawing practices, including templates and formats, title
blocks, numbering and naming conventions, symbols and nomenclature, indexing
and version control practices, and addition and deletion annotation practices.
RailCorp's standard practices are detailed in EM 0149 - CAD and Drafting
Manual and Section 4 of this Specification

6. Provide data in the required format, for changes that affect RailCorp's survey
control system data sets.

7. Provide configuration control of designs and drawings including the preparation of

and delivery of all configuration documents and design drawings such that future
corrections, additions, deletions, amendments or presentation changes can be
readily made by others and are not dependent on any proprietary process that is
not an industry standard or on expensive conversion before the change can be
made.

8. Provide and maintain a register of all drawings and copies of drawings issued for
the Works and work under the Contract, showing all identification details of each
drawing issued e.g. drawing number and/or title, type of drawing, purpose of

© RailCorp Page 8 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

copy, version number and date, copy number, copy holder name and receipt
acknowledgment, issue date, history and current status.

9. Transmit all documents and drawings using standard Transmittal Forms detailing
the issue, register the issue details and record and follow up receipt
acknowledgments.

10. Provide new and altered final drawings so that they fit into RailCorp's existing
series of drawings to form an ordered, comprehensive, consistent and cohesive
set in accordance with RailCorp's standard documentation and drawing practices,
including drawing registration numbering practices, without the necessity for any
modification to the existing series of drawings that are not affected by the work
under the Contract.

3.5 Technical Review of External Designs

On behalf of RailCorp the Chief Engineer Track will undertake general reviews of design
elements at Concept and Detailed design stages. Where necessary he will also
undertake detailed reviews.

The extent of review will be dependent on the perceived risk to RailCorp of the design
solutions developed in satisfying the nominated technical brief/specification.

3.6 Acceptance
The Chief Engineer Track (or persons to whom he has assigned appropriate Engineering
Authority for the activity) will, on behalf of RailCorp, accept the design for use in RailCorp.
ALL designs MUST be accepted for use before they can be applied to RailCorp
infrastructure.

The Chief Engineer Track (or persons to whom he has assigned appropriate Engineering
Authority for the activity) will sign individual drawings presented by the external design
firm as "Design Accepted for use by RailCorp" or, alternatively, may signify acceptance of
a schedule of drawings or other documents.

The Chief Engineer Track does not, by any action or omission, accept responsibility for
the design. This responsibility remains with the designer. The Chief Engineer Track is
accepting the design on behalf of RailCorp based on the assurances provided by the firm,
and any independent auditor of the firm, that designers certified as qualified have
followed approved procedures, using approved tools, under appropriate supervision.

4 Design Requirements
RailCorp Standards provide for track design options to be selected that require
justification and or separate approval by the Chief Engineer Track or other parties.

A checklist (Form ED 001) containing these options is provided in Appendix A. Part 1 of

the checklist is normally filled out by RailCorp as part of the design brief. It describes the
key design parameters.

Part 2 provides a checklist of the different design options both as a reference and for the
external designer to fill out to confirm:

• the design limits used,

• that the relevant documents have been provided, and that
• the required approvals have been obtained.

© RailCorp Page 9 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

For the Design Parameter column RailCorp may specify which parameters are to apply
and/or cross out sections not applicable. Otherwise the designer shall nominate what
he/she has applied, including all relevant approvals, and nominate which sections are not
applicable.

Guidelines are provided to External Designers that cover:

• Matters that should be addressed at Concept Stage (Form ED 002 see Appendix
B).
• Matters that should be addressed at various stages in the Final Design (Form ED
003 30%, 70% and 100%) (see Appendix C).
• checklists for various design activities (Form ED 004, Form ED 005 and Form ED
006 see Appendix D).

These do not need to be submitted to RailCorp. Review of designs by RailCorp will,

however, assess if the matters referred to have been addressed.

In addition to the above RailCorp Track Services' internal procedural documents can be
made available to designers on request and at the discretion of RailCorp, on condition
that these do not relieve the designer of responsibility for any aspect of the design. The
designer should also note that these are regularly updated.

5 Documentation and Drawings

5.1 General Requirements

All Design Drawings shall be produced in accordance with the conventions detailed in
RailCorp manuals ED 0026P - CAD and Drafting Manual - Track and ED 0022P - CAD
and Drafting Manual – All Design Areas, and the following requirements:.

1. All drawings shall include a RailCorp drawing number (also called an EDMS
number), placed in the dedicated position in the drawing title block.

2. CAD files may be transmitted electronically in standard DGN format or, if

required, in DXF or DWG formats after converting the file. A paper copy of these
drawing should also be issued if practicable.

3. All document transmittals, whether paper or electronic shall be recorded.

4. If a CAD file is to be issued as a work in progress, i.e. preliminary drawing, it shall

be treated as an uncontrolled document and the “preliminary” and “uncontrolled”
stamps replicated electronically on the drawing. If control is required, a controlled
and stamped paper copy shall be provided in parallel with the CAD file. The CAD
file itself cannot be controlled.

5. The signature block of drawings shall be signed as shown in Figure 1 below.

© RailCorp Page 10 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

DISCLAIMER: Design
RAILCORP SIGNATURES ON THIS DRAWING DO NOT SIGNIFY ACCEPTANCE OF Designer Approver
RESPONSIBILITY FOR THE DESIGN.
RESPONSIBILITY FOR INTEGRITY, SAFETY AND DIMENSIONAL ACCURACY OF
THE DESIGN REMAINS WITH THE APPROVING AUTHORITY.

COMPANY
NAME
Include Logo and
details if desired

Figure 1 – Title Block

6. When a drawing has been completed and signed, the names (first initial and
surname) of the people who have signed the actual drawing shall be shown in
printed form in the signature spaces on the CAD file.

7. When a drawing is amended, the initials of the designer and approver shall be
placed in the Amendment Box. An asterisk ([) shall be placed next to Designer,
Design Checker, Approver and Accepter and the words “[ in title block means
signed on original issue” added to the signature block (See Figure 2).

ENGINEERING & PROJECTS GROUP

Professional Services Division

TRACK DESIGN

Figure 2 - Title block on amended Drawings

5.2 Drawing Presentation Standards

5.2.1 General
• All drawings should be documented in accordance with the EM 0149 - CAD
Manual
• The Title Block shall appear in the bottom right hand corner of each drawing as
shown in Figure 1. An alternative arrangement is also available.

Track design involves the production of distinctive drawings depending on the design
activity. Each drawing type has some unique presentation requirements. The following
sections detail the presentation requirements for each specific drawing type. Reference
is made to examples of each drawing type and to examples of individual requirements. It
should be noted that the examples shown do not necessarily match the detail on the
sample documents.

© RailCorp Page 11 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

5.2.2 Horizontal Alignment

The following information should be displayed. (See Appendix F).

Requirement Comment Figure

Ref
Detail survey Show in background as half tone / 75% A5-1
Surveyed features to have annotation for all
relevant/significant information

Tracks No more than two tracks to be documented on A5-2

one sheet
Document tracks in pairs
Track subject to design to be shaded as
shown in Legend
Co-ordinates for frame Point description, kilometrage, Centre Line A5-3
points. name [based on Line Name], Easting &
Northing
Separate schedules for the Down and Up track
frame points
Design centreline Information for each sheet should be
documented on each sheet. You should not
have to refer back to an index sheet to sort the
alignment
Horizontal alignment Documented in schedule form A5-3
Curve Details Show Track Name, Radius and direction, Arc A5-4
Length, Velocity, Ea, Deficiency, Centre-
Easting & Northing
Transition Details Show Track Name, Radius, Length, Xc, M & A5-5
Ramp Rate
Show non standard ramps by dimension with
start and finish km noted (Ea Points)
Straight Details Show Bearing & Distance A6-7
Track Centres Show "6ft" / variable A6-7
Turnouts Show at scale - Document full detail on the A6-9
setting out drawing
Show turnout details in schedule form. A5-6
Tangential and Conventional as separate
schedules)
Design Speed Show in notes
Grid. Show at 50m intervals over the whole sheet. A5-8
This can be scale dependent
Kilometrage Values Place at 90° to track. A5-9
Orient so that they can be read in the direction
of increasing kilometrage from top to bottom
when drawing is rotated 90° clockwise
Kilometrage adjustments In accordance with ESC 210 A6-13
Survey Control Marks Show in schedule form. Include identification A5-7
number, if any, type of mark (SSM / BT etc)
and location.
Show mark location on drawing A5-10
Co-ordinate System Show Horizontal co-ordinate origins, Vertical A6-12
datum origins and co-ordinate system (eg
NGA, ISG, Plane Rectangular) in notes
From & To. Show "From XXX" (usually "From Sydney") A5-11
and "To YYYY" with Sydney on left of the
drawing sheet
Multiple sheets All drawing detail other than the rails is to be A5-12
deleted beyond the join lines

© RailCorp Page 12 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Requirement Comment Figure

Ref
Notes A5-13
References A5-14
Legend A5-15
Scale A5-16
North Point A5-17

5.2.3 Track Setting Out Details

The following information should be displayed. (See Appendix G).

Requirement Comment Figure

Ref
Detail survey Show in background as half tone / 75% A6-1
Surveyed features to have annotation for all
relevant/significant information

Tracks No more than two tracks to be documented on A6-2

one sheet
Document tracks in pairs
Track subject to design to be shaded as
shown in Legend
Co-ordinates for frame Point description, kilometrage, Centre Line A6-3
points. name [based on Line Name], Easting &
Northing
Separate schedules for the Down and Up track
frame points
Design centreline Information for each sheet should be
documented on each sheet. You should not
have to refer back to an index sheet to sort the
alignment
Horizontal alignment Arrowed in A6-5
Curve Details Show Track Name, Radius and direction, Arc A5-4
Length, Velocity, Ea, Deficiency, Centre-
Easting & Northing
Transition Details Show Track Name, Radius, Length, Xc, M & A5-5
Ramp Rate
Show non standard ramps by dimension with
start and finish km noted (Ea Points)
Straight Details Show Bearing & Distance A6-7
Track Centres Show "6ft" / variable A6-7
Turnouts Document Full detail A6-9
Show turnout details in schedule form. A6-4
Tangential and Conventional as separate
schedules)
Insulated joint Standard GIJ units or special units fabricated A8-4
information into closure
Traction rail Show whether Single rail or for Double A6-16
Double rail and note Rail
approximate stagger for Single A8-5
Rail
Clearance Points
Design Speed Show in notes
Grid. Show at 50m intervals over the whole sheet. A6-8
This can be scale dependent

© RailCorp Page 13 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Requirement Comment Figure

Ref
Kilometrage Values Place at 90° to track. A6-12
Orient so that they can be read in the direction
of increasing kilometrage from top to bottom
when drawing is rotated 90° clockwise
Kilometrage adjustments. In accordance with ESC 210 A6-13
Survey Control Marks Show in schedule form. Include identification A6-6
number, if any, type of mark (SSM / BT etc)
and location.
Co-ordinate System Show Horizontal and Vertical co-ordinate A6-10
origins and co-ordinate system in notes
From & To. Show "From XXX" (usually "From Sydney") A6-14
and "To YYYY" with Sydney on left of the
drawing sheet
Multiple sheets All drawing detail other than the rails is to be A5-12
deleted beyond the join lines
Track pulls Show pulls required to get existing track back A6-15
to design
Notes, references, A5-13 - 16
legend & scale

5.2.4 Vertical Alignment

The following information should be displayed. (See Appendix H)

Requirement Comment Figure

Ref
Line name Show as heading in top left corner of section A7-1
Kilometrage location The running kilometrage should include labels A7-2
for the horizontal and vertical alignment frame
points. Include kilometrage adjustments
Diagrammatic With the cardinal points, Ea and radius noted. A7-3
representation of the
horizontal alignment
Existing rail levels Interpolated to 20m intervals A7-4
Track Lifts and Lowering From existing to design A7-5
Grade and Intersection IP metrage and RL
points
Design Rail Levels Note to be added to the rail profile nominating A7-6
the adjoining grades
Grade Values Grades to be rounded in accordance with A7-7
ESC 210
Grading With included km
Vertical Curve Details IP value to be shown A7-8
Construction or Interim Tie in-grades to existing to be included at A7-9
Grades concept stage. Helps define the scope for
survey
Control and Bench Marks
Existing and Design A7-10
Profile
Formation Profile When required. (i.e. 750mm below rail) A7-10
Line diagram

© RailCorp Page 14 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Requirement Comment Figure

Ref
Existing & Proposed Overbridges, Underbridges, tunnels, pipes, A7-12
Design Structures culverts, Turnouts, Platforms (level or
standard) Topographic Features.
Show above and describe the profile at their
longitudinally plotted location.
Underside of girder levels. (Overbridges) A7-13
Deck levels. (Underbridges)
Ballast depth when A7-14
available
Contact and catenaries When required for Over Head Wire design A7-11
Notes Design velocity (speed) A7-15
Datum, km and survey origin
Special super ramps
Scale Preferred ratio 100:1000 or other recognised A7-16
scales
References, legend A7-17 - 18

5.2.5 Field Layout for Tangential Turnouts

Description

This drawing is intended to provide a plan, laid out in correct orientation, for the track
crew carrying out pre-assembly. Position of Insulated Joints, type of IJ units and cant
sets requirements are shown. Initial layout of ties (bearers) allows 'rough' layout to be as
close as possible to final layout. This minimises inaccuracies as well as reducing re-
work.

The following information should be displayed. (See Appendix I)

Requirement Comment Figure

Ref
Turnout Type and
parameters
Tie Layout Initial Layout for Turnout & End infill ties A8-1
Final Layouts for Turnout & End infill ties A8-2
Setting Out dimensions for turnout & end infill steelwork A8-3
Insulated joint Standard GIJ units or special units fabricated A8-4
information into closure
Traction rail Show whether Single rail or Double rail and A8-5
note approximate stagger
In-bearer Tie arrangements at points (where required)
Closure details including specials with built in GIJs A8-6
Closure and check rail A,B,C,D,E,F,G,H,K etc – in traditional A8-7
carrier labels sequence (See Figure 3)
Additional plating Adjacent to GIJs A8-9
Notes, references, A8-8
drawing number & scale

© RailCorp Page 15 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure 3 - Closure naming conventions

5.2.6 Tangential Turnouts – Tie Layout and Details

The following information should be displayed. (See Appendix J)

Requirement Comment Figure Ref

Turnout details Location, points numbers, type, length
Concrete Turnout Tie Spacing of bearers (between bearers and A9-1
Layout cumulative on both sides) from
commencement of cant reducing plates at
either end.
Bearer Details Length of each bearer A9-1
Identification No. of each bearer A9-1 & A9-6
Pad Details Pad dimensions for all turnout base plates A9-2
Closure details including specials with built in GIJs A9-3
Closure and check rail A,B,C,D,E,F,G,H,K etc – in traditional A9-4
carrier labels sequence (See Figure 3)
Screw spike inserts Typical details A9-5
Method of securing rails (where required)
with double clip washers
Insulated joint Standard GIJ units or special units fabricated A9-7
information. into closure
Traction rail Show whether Single rail or Double rail and A9-8
note approximate stagger
In-bearer Tie arrangements at points
Notes, references and The location of joints/ welds and any special A9-9
scale. requirements must be included. There are
minimum lengths required behind monobloc
crossings (to maintain a minimum distance to
the flashbutt weld in the monobloc). This
may require, for example, a weld within the
checkrail carrier which can be carried out
with modern designs. Similar issues could
arise with the positioning of GIJs. For
example a note could be added to the joint
location "joint location is critical, welding
requires removal of guard rail."

© RailCorp Page 16 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

5.2.7 Conventional Turnouts – Timber and Plating

The following information should be displayed. (See Appendix K)

Requirement Comment Figure

Ref
Timber & Plating Details Length and spacing of bearers from A10-1
commencement of cant reducing plates at
either end.
Identification No. of each plate
Table of materials Item numbers to be referenced to components A10-2
on drawing. Includes:
Table of pandrol base plates A10-3
Table of timber bearers A10-4
Table of closures A10-5
Table of heelblock dimensions A10-6
Table of standard plates A10-7
Setting out dimensions includes offsets to mainline and turnout for A10-8
for turnout steelwork field layout and check purposes
Switch, stockrail and includes offsets, mid-ordinates, radii and A10-9
checkrail details curvature direction of these components
Crossing Details Crossing rate and XL catalogue number
shown in Material List with reference to detail
drawing
Insulated joint Show standard GIJ units or special units A9-7
information. fabricated into closure
Traction rail Show whether Single rail or Double rail and A9-8
note approximate stagger
Closure details including specials with built in GIJs
Closure and check rail A,B,C,D,E,F,G,H,K etc – in traditional A10-10
carrier labels sequence (See Figure 3)
Notes, references and The location of joints/ welds and any special A10-11
scale. requirements must be included. There are
minimum lengths required behind monobloc
crossings (to maintain a minimum distance to
the flashbutt weld in the monobloc). This may
require, for example, a weld within the
checkrail carrier which can be carried out with
modern designs. Similar issues could arise
with the positioning of GIJs. For example a
note could be added to the joint location "joint
location is critical, welding requires removal of
guard rail."
Include whether switch pad protectors are
provided in accordance with the requirements
of ESC 250

5.3 Control of Drawings

1. The issue and revision of technical drawings during the design process shall be
controlled so that the status of all copies of drawings is clearly identifiable and
verifiable, and all design work based on copies of drawings is carried out using
the latest revision.

2. The status of master drawings and controlled copies is to be evident at all times.
The status of numbered drawings and their copies is to be evident from
amendment identification and stamps.

© RailCorp Page 17 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

3. The first issue of approved drawings and any subsequent revisions shall be
marked with capitalised alpha characters ("A", "B", "C" etc). DO NOT use
capitalised alpha characters for version control of documents prior to approval.

4. External Designers shall nominate the numbering system used for pre-approval
drawings.

5. Approved drawings shall be issued in whatever format has been agreed (eg
paper prints, plastic, .pdf or .tiff file). When first issued, the drawing will be
amendment “A” and shall be marked accordingly in the title block.

6. Note: When a design is complete and the drawing/s are accepted for use by
RailCorp, the original plans will be lodged by Rail Corp in RailCorp's Plan Room.

7. Where design amendments are required after drawings have been accepted by
RailCorp and registered, they shall be verified and approved by the external
design firm in the same manner as initial design, and shall be accepted by the
Chief Engineer Track. Appropriate notation shall be made on the amended
drawing/s.

8. If “As-Built” drawings are specified in the Brief, and upon receiving work-as-
executed information from the field, a final amendment incorporating this
information shall be made to the drawing, with the words “as-built details” in the
amendment block

Guidance Notes
• Drawing amendments are design changes. Design changes are
undertaken by following the same process as initial design. Design sign-
off, design checking and approval and acceptance for use in RailCorp are
required as is all appropriate documentation.
• On the drawing, increment the previous amendment letter shown in the title
block (eg amendment “B” becomes “C”). Indicate the new amendment
letter in the body of the drawing beside the amendment.
• Add the description of the change to the amendment block on the drawing.
• When a drawing is prepared in such a way as to supersede a previously
registered drawing, and a new number is issued, if required place a note, in
5mm high upper case, immediately above the title block to draw attention to
this fact,. This note shall be in the form of “this drawing supersedes CV
1234567” and also a note “this drawing superseded by CV 9876543” shall
be added to the superseded drawing.
9. All documentation and drawings including those submitted for review, shall be
laid out in a clear and logical fashion and shall be such as to facilitate
understanding, checking, construction and maintenance.

10. All drawings and documentation applicable to temporary works including stage
work, interface work etc. shall be clearly endorsed as such on each drawing
sheet. All details necessary for such temporary works should be added to a
reproducible copy of the existing arrangements and/or to a reproducible copy of
final arrangements as appropriate to facilitate production of the temporary or
stage work drawing.

11. The practice for showing work comprising alterations shall include the detailing of
existing track and structures to be removed, as they exist, but with linework
preferably dotted. New work shall be shown in full linework highlighted with filled
arrows. To assist in clarity of the changes, areas may be circled or clouded to
highlight.

12. All copies of documents and drawings shall be designated as to their purpose

© RailCorp Page 18 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Guidance Notes
Drawing Control Stamps (or electronic equivalents) are used to identify the reason the copy
of the plan was created. The following categories are used:
Status

Drawing prepared outside Track Services Unit and

received on this date.

Not complete at issue and likely to be changed and

revised before approval. It should not be relied upon for
any purpose other than that stamped, or otherwise
shown on the drawing.
Note, a drawing is complete and approved when it is signed as approved.
Control
A preliminary copy issued for a design, or other quality
purpose. The issuing authority has registered the issue,
will increment the revision number as significant change
occurs, and will then issue revised copies to the holder.

A preliminary copy which is not controlled or registered.

The issuing authority will not issue updates as revisions
occur.
Intended Use

The drawing is sufficiently developed to be relied upon

for tendering purposes.

This copy is issued for use in checking the design/

drawing.

This drawing is issued for construction work.

The Constructing
Authority is responsible
for "As Built" drawings

This drawing is issued to facilitate testing.

© RailCorp Page 19 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

AS-BUILT
Please review the status of installation/construction at
completion of key milestones, mark up alterations in RED
PERMANENT INK and return to the Designer within 1 Week
of Key Milestone AND/OR Practical Completion.

Project Status: Work in Progress

As-Built at Practical Completion
(Strike out where Not applicable)
Signed:
Construction Supervisor
………………………………………………………………………
Signature Date

Site Engineer
…………………………………………………………………………
Signature Date

The ‘AS -BUILT’ drawing stamp shown above when applied to a ‘construction’ drawing indicates
that the drawing has been marked-up to show the actual ‘as-built’ configuration of the work installed
on site. ‘As-built’ drawings are provided if requested by the client and stated in the scope of
works. They can be prepared at either a key ‘milestone’ during the work in progress or at the
completion of the work following Practical Completion.
Colour of Stamps
All the above stamps (or electronic equivalents) are coloured in red ink. This facilitates
identification of unofficial copies because where a stamped drawing has been copied, the
stamps will appear the same colour as the rest of the drawing and the copy of the drawing
is not to be relied upon for any purpose.

© RailCorp Page 20 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix A Track Services Checklist

External Design Service Providers : Mandatory RailCorp Approvals - TRACK SERVICES Checklist ED-001
CHECKLIST
Page 1 of 4
PART 1 To be completed by RailCorp
Project Identification
Location Design Stage Concept
………….… % Final
Description Project ID

External Organisation responsible for ##

design firm obtaining RailCorp Approvals
Engineering Authority
Design Activities Horizontal & Vertical Alignment (Plain Track) Transit Space Studies
Required
Turnout & Special Components (Alignment) Speed Board Configuration

Special Trackwork (Manufacture / Installation) Track Structure

Other ……………………………………………………………………………………….………….
Documentation Key Personnel Register incl. Project Responsibilities for Designing, Checking, Verifying, etc
Submitted
Relevant Work Experience CV’s Other ………………………….
RailCorp Allocation** Chief Engineer, Track or under delegation to Principal Engineer Design, Track
Comments ………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………………
………………………………………………………………………………………………………….…..
Design Controls
….……./…………../……… OR
Traffic Classification T………………….. Track Structure Classification
Designer to determine
RailCorp Design ESC 200 ESC 210 ESC 215 ESC 250
Standards applied
Others ………………………………………………………………………
Platforms Level Access Standard Access Existing None
Rolling Stock Outline Narrow Electric Medium Electric Extended Medium Electric

Wide Electric Other ……………………………………

Applicable to Platforms also Yes No ……………………………….. (applies)

Service Corridor Standard Service Corridor with Road Access one side both sides
Requirements
Standard Service Corridor without Road Access

Other………………………………………………………………………………………………………………
……………………………………………………………………………………………

Designer is required to get maintainer's approval YES NO

## Organisation responsible for obtaining RailCorp Approvals, during the Design Process
Stage. (could be the External design firm ).

© RailCorp Page 21 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

External Design Service Providers : Mandatory RailCorp Approvals - TRACK SERVICES Checklist ED-001
CHECKLIST
Page 2 of 4
PART 2 To be completed by designer (except where completed by RailCorp)
Location Design Stage Concept
Project ID ………….… % Final

Design Process
Infrastructure Design Parameter Documentation to be prepared by RailCorp Approvals **
Item External design firm (Minimum)
Design Limits Normal Limits (preferred) N/A
(Geometry)
Max / Min Limits Submission of documented
(ESC 210)
justification, including identification Maintainer
of applicable Infrastructure
Exceptional Limits Submission of documented
Chief Engineer
justification, including identification
Track
of applicable Infrastructure
Transit Space Normal Structure Gauge N/A
(ESC 215)
General Kinematic Submission of documented
Structure Gauge – justification, including identification
tolerances complying with of applicable Infrastructure Maintainer
Standard
Structure Gauge Waiver Submission of documented
(non compliant to General justification, including identification
Kinematic Structure Gauge) of applicable Infrastructure, in form Chief Engineer
of Waiver Track
Transit Space Infringement Risk
Assessment
Platforms - existing track Submission for approval where
alignment varies from impact on platform clearances does
design track alignment. This not conform to Standard.
Chief Engineer
is an issue if existing track
Track
alignment is retained after
platform coping installed to
design alignment.
Platform Gaps Compliant to ESC 210- N/A
New Corridor Section 7.5
Design Non-Compliant to ESC 210- Submission of documented Chief Engineer,
(ESC 210) Section 7.5 justification, including extent of Track
gaps, in form of Waiver. Include any AND
special gap reduction measures. General Manager
Waiver Risk Assessment Station
Operations
Platforms Gaps Compliant to ESC 210- N/A
Existing Corridor Section 7.5
– Normal & Non-Compliant to ESC 210- Submission of documented Chief Engineer,
Max/Min Limits Section 7.5 justification, including extent of Track
gaps, in form of Waiver. Include any AND
(ESC 210)
special gap reduction measures. General Manager
Waiver Risk Assessment Station
Operations

© RailCorp Page 22 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

External Design Service Providers : Mandatory RailCorp Approvals Checklist ED-001

- TRACK SERVICES CHECKLIST
Page 3 of 4
Location Design Stage Concept
Project ID ………….… % Final

Design Process (continued)

Infrastructure Design Parameter Documentation to be prepared by RailCorp Approvals **
Item External design firm (Minimum)
Speed Boards Configuration of Boards Submission of Speed board
(ESC 210) including requirements in configuration diagrams and
bi-directionally signalled spreadsheets.
sections
NOTE: Final approval
Interface Input Detail all matters affecting the speed
by Chief Engineer,
Signalling – eg catchpoint risk, buffer stop
Track (or delegate)
limits, level crossing site distance
OHW
Bridges and Structures
RailCorp District
Turnouts Horizontal alignment
(ESC 210) In tangent track N/A
In curves > 600m radius Submission of documented
justification Maintainer
In curves < 600m radius Submission of documented
justification including impact on Chief Engineer,
individual components (ie Track
switch/crossing)
Vertical Alignment
On constant grade N/A
VC ≥ 3000m radius Submission of documented
justification Maintainer
VC < 3000m radius Submission of documented
justification including impact on Chief Engineer,
individual components (ie Track
switch/crossing)
Long Bearers N/A
(≤ 6.4m timber)
(≤ 6.6m Concrete)
Long Bearers Submission of documented
( > 6.4m timber) justification Maintainer
( > 6.6m Concrete)

Track Products Standard N/A

(General) New or non-conforming Type Approval documentation
Chief Engineer,
including Hazard Assessment
Track
& FMECA Analysis
Special Trackwork Diamonds
Slips Submission of documented Chief Engineer,
justification Track
Other ……………………

© RailCorp Page 23 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

External Design Service Providers : Mandatory RailCorp Approvals Checklist ED-001

- TRACK SERVICES CHECKLIST
Page 4 of 4
Location Design Stage Concept
Project ID ………….… % Final

Design Process (continued)

Infrastructure Design Parameter Documentation to be prepared by RailCorp Approvals **
Item External design firm (Minimum)
Catchpoints, 40 metre clear runoff areas N/A
runaway turnouts (speed < 25kph)*
(See Appendix L for 40 metre clear runoff areas Submission of documented
Guidance on (speed > 25kph) justification in form of Waiver
Catchpoint design) Chief Engineer,
Waiver Risk Assessment Track

< 40 metre clear runoff Submission of documented

areas justification in form of Waiver
Chief Engineer,
(including Design Solutions)
Track
Waiver Risk Assessment

Formation Ballast Depth outside the Submission of documented

standard requirement justification in form of Waiver Chief Engineer,
Waiver Risk Assessment Track

Capping crossfall, Document drainage impacts

continuous, under multiple Chief Engineer,
tracks ( Single turnouts to Track
be assessed)
Interfaces Signalling (including the Document impact of Track
configuration of the point Alignment on other Discipline
operating equipment) infrastructure
OHW Submit through RailCorp’s Design
Delivery Delivery Manager or ## Chief Engineer,
Structures Signals, Civil,
Electrical
Platforms

Drainage

Design Documentation Deliverables (to be completed by RailCorp)

Design Document Control Documentation RailCorp Approvals **
H & V Alignment RailCorp CAD Manual

Earthwork Cross Sections Track Services Design Presentation

Standards Chief Engineer,
Speed Board Configuration Other system specification Track
OR
Special Trackwork Principal
Engineer
Transit Space Analysis Design, Track
Detail Survey

*Speed can be achieved by signalling system if failsafe (eg Timed trainstops on Passenger sidings)

**RailCorp Approvals are Mandatory and must be provided prior to commencement of next Stage of
the Design Process

© RailCorp Page 24 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix B Concept Design Guidelines

Guideline - Concept / Reference Design ~ Basic Issues for External Design Service Checklist
Providers ED-002
Specific Issues to be
Infrastructure identified and addressed Impact Reference
during this Stage (Note 1)
Platforms Proximity of turnouts Platform gaps, height ESC 210, Section 7.5
Sharp radii curves
Level or Standard Access
Design Track alignment adopted
Rolling Stock outline
Existing / Design track alignment If the existing track alignment and design track
alignment vary then the impact on a new platform
or platform extension needs to be addressed.
Particularly where the track stays in its existing
location and is not placed on design alignment, for
any length of time
Existing level crossings Affect of platform height
Turnouts Type – Non Standard Design not available ESC 250, Sect 7
Configurations
Blunt crossing angles Reduced main line speed, Increased wheel rail ESC 250, Section 7.2
impact, increasing wear and component failure
In curves Special componentry such as crossings and ESC 250, Section
switches, Increase in maintenance and risk 7.1.1.1, Section 7.1.7
Operating speed in turnout direction (impact of
turnout radius and negative super elevation)
In curves < 600m radius Increase maintenance, risk ESC 250, Section
Special componentry 7.1.1.1
Vertical Alignment (ie turnout in Switch binding or not supported by plating ESC 250, Secton
VC) (depends on direction of VC) 7.1.1.2 &
Crossing is rigid (not bent to VC radius) ESC 210, Section
7.3.1.5
Nesting Turnouts should be separated where practical so ESC 250, Section
that they may be maintained and replaced 7.1.1.1,
independently
Switch protection pads To be installed to protect conventional switches in ESC 250, Section
siding turnouts where the crossing rate is ≤ 1 in 6.1.6.1
8.25
Rolling Stock Clearances Clearance points
Location of OHWS, retaining walls, abutments, all ESC 215
track side structures
Platforms
Track Centres
Speed Boards Placement (incl sighting) Interface with Signalling, Electrical, Bridges and ESC 210, Sect 8
Structures, District Staff RailCorp - Network
Rules, TOC Manual
Special Crossovers
Trackwork In curves Operating speed, Droc ESC 250, Section
7.1.5.1, 7.1.1.1
Long Beams under multiple Tracks need to be co-planar if centres result in
tracks long beams under both tracks. Maintenance -
Tamping
Diamonds
Blunt crossing angles Reduced main line speed, Increased wheel rail ESC 250, Section 7.2
impact, increasing wear and component failure
New Products Type approval SPC 204
Catchpoints Run off area – 40m (min) Earthworks (traps and impact barriers) ESC 250, Section 5.4
25kph (max) Placement of structures Design Guidelines
Train speed Appendix L
Buffer Stops Track speed Length of Sidings Refer to Chief
Over run area and hence Earthworks Engineer Civil for
Placement of structures buffer stop type

© RailCorp Page 25 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Guideline - Concept / Reference Design ~ Basic Issues for External Design Service Checklist
Providers ED-002
Specific Issues to be
Infrastructure identified and addressed Impact Reference
during this Stage (Note 1)
Track Structure Ballast depths (min/max) Open Track ESC 200 Section 5, 6
Bridge decks, direct fixation, temporary Under- & ESC 240
track crossings
Signalling Train Speed control Buffer Stop placement / design
Interface Point Operation Location of point motors, use of in-bearers,
independent switches
Turnout beams re drilling for point motor type
Speed boards
Relocation of turnouts (points position in particular)
relative to location of existing GIJs and signals/
How far points are moving – impact on OHWS,
signals, structures
Track Safe places Location of Refuges, hand holds ESC 215 & ESC 350
Formation Cross section Location of drainage pits and lines, cess drains ESC 410 & ESC 420
Access for maintenance – Access to track by staff and vehicles, drivers ESC 215
turnouts, special trackwork walkways
check proximity to features that may affect the
ability to safely maintain new track and turnouts
Plain Track Alignment and impact of Design Normal limits for radii, transition parameters, ESC 210 – Table 1
(Note 3)
Speed superelevation, superelevation ramp , cant
roc
deficiency, D
note the potential impact of proposals for future
works such as quadruplication, turnbacks,
upgrades, etc
General Maintenance and Possession regime, site access
Constructability
NOTES : 1. The process for RailCorp approval/resolution of the Issues above is provided in the Checklist – “Mandatory
RailCorp Approvals”.
2. Where issues are identified at this Stage of the Design Process they must be resolved prior to progressing to
the Final Design Stages.
3. Consideration needs to be given to the implications for Base Operating Conditions for track geometry. Rates
less than 1 in 650 will impact on track maintenance for speeds more than 60kph

© RailCorp Page 26 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix C Final Design Guidelines

Guideline - Final Design ~ Basic Issues for External Design Checklist ED-
003
Service Providers Page 1 of 2
The Design Brief should identify the Track Classification / Operating Class (ESC 200) and as a minimum the brief
should allow the designer to determine clearly the Design Brief- Criteria indicated in Column 1 of the Table below.
Design Brief - Criteria Design Applications /Impact Standards
Track Classification
Track Structure – main line or siding, rail & sleeper type, ballast depth, ESC 200
fastenings, etc
Existing Infrastructure
Future Upgrading Allowance for future track centres, train operations, etc
Works
Operational
Speed
Plain Track, H & V Alignment & Speedboard configuration ESC 210 – Sects 6, 8 and
crossing loops TOC Manual
Turnouts, Selection of Type ESC 250 – Sect 5.1
crossovers
Terminating Roads, Length See “Design Guidelines for
stabling facilities, Buffer Stop (type) Train Stabling Yards &
yards, Grade limits for yard operation Turnback Sidings
Reference Design
including Train Track configuration including location of turnouts, crossovers, platforms
Movements
Transit Space Requirements
Rolling Stock Platform Clearances ESC 215 – Sect 11
Gauge Track Centres ESC 215 – Sect 7.1.6
Location of C’pts ESC 250 – Sect 5.4
Location of Trackside Structures (H & V) ESC 215 – Sect 6
Train Lengths Standing Room
Platform Type (ie Platform Gaps ESC 215 – Sect 12
Level or Standard H & V Track Alignment
access)
Platform H & V Track Alignment
configuration (ie Turnout location
straight / curved) Platform Gaps
Protective Devices
Catchpoints Run off areas
Location of structures
Buffer Stops Over run requirements - speed
Type
Future track configuration
Quadruplication, H & V Track Alignment
duplication, etc Location of future turnouts
Formation
Maintenance Track Centres
Access and Earthwork X- Section, drainage
Walkways Safe places
Design General Issues
Design Limits Track Alignment design ESC 210 – Section 7.1.1
Design RailCorp’s Documentation requirements Track Services Manual,
Presentation RailCad Manual for Track
Engineering Authority
Written delegation by RailCorp on evidence provided by Design
Contractor. Project specific.

© RailCorp Page 27 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Guideline - Final Design ~ Basic Issues for External Design Service Checklist
ED-003
Providers Page 2 of 2

30% Design Issues 70% Design Issues 100% Design issues

At this Stage the following criteria need to be identified and reported upon :
Issues outside normal design limits but meeting Type approval documentation for Response to Stakeholder
max/min limits all componentry outside approved feedback at 70% Design Stage
Justification and application for RailCorp approval RailCorp configurations Submission of completed
for those issues covered by Exceptional Design Response to Stakeholder Checklists for Design
Limits feedback at 30% Design Stage Documentation including
Infringements to Standard Structure Gauge Access for maintenance and Alignment Design, Special
requirements requirements for special track Trackwork, Track Structure,
Requirements for waivers for non compliance to componentry Speedboard Configuration,
Standards Rail Safety and Risk Management Transit Space and Product
Special track componentry adopted issues Approval
Impact on existing rail infrastructure particularly Design co-ordination (all
Track alignment disciplines)
Clearance to track side structures such as over
bridges, signals, retaining walls, etc
Ballast depths and formation profile
Vertical and horizontal clearance to OHW and
OHWS
Train run off areas associated with catchpoints
and buffer stops
Friction buffer stops require additional siding
length
Requirements for “Safe Places” in locations with
restricted clearances
Crossovers and requirement for tracks being co-
planar for long crossover beams
Constructability of track infrastructure
Impact of track alignment and turnout location on
platform gaps.
Impact of the variation between existing alignment
and design alignment on Platform Gaps
Impact of walkways, lighting, train inspections
requirements, etc, on track centres in stabling
sidings.
Track Design Documentation
Should at least provide details of: Will provide details of : Will be suitable for Construction and
Basic alignment framework for both Horizontal Horizontal and Vertical alignment provide details of:
and Vertical alignment Earthwork cross sections for track Horizontal and Vertical alignment
Horizontal curve parameters including speed, formation Earthwork cross sections for track
applied super and deficiency Scope of Works associated with formation
Vertical alignment should include grades, location trackwork construction Staging plans
and description of vertical curves and location of Location of insulated joints in and Speedboard configuration for
turnouts and platforms around turnouts inclusion in TOC Manual
Standing Room Documentation to be presented in Sign off by personnel with
Track Classification a format suitable for approval by RailCorp’s Engineering Authority
Turnout and special trackwork details RailCorp’s Principal Design for the Design, Checking and
Track Centres (structures in “6ft”) Engineer, Track Approval functions for the Project
Platform clearances and design parameters Sign off by personnel with
Typical cross sections indicating clearance to RailCorp’s Engineering Authority
structures, formation profiles for the Design, Checking and
Location of catchpoints and buffer stops, Approval functions for the Project
indicating type and runoff requirements.
Sign off by personnel with RailCorp’s Engineering
Authority for the Design, Checking and Approval
functions for the Project

© RailCorp Page 28 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix D Documentation Checklists

Checklist ED-004
Alignment Design Documentation Checklist
Project Identification
Location Project ID

Description Design Stage Concept

……… % Final
Design Contractor Design Approver
Checklists are not comprehensive and are subject to change
Interface Definition Check the following interfaces for relevance
Transit Space Track/platforms – alignment, level, foundation, drainage
Wheel/rail Track/buildings
Track/Survey Control – alignment, level Track/walkways
Track/drainage Rail Corridor Boundaries
Earthworks/drainage Future Projects (Quad., Turnback’s, Upgrading, etc)
Track/OHW – alignment, mast clearance, wire height at Existing Track/New track/realigned track alignment and
mast and mid-span level
Track/signalling/track circuits Alignment change at connection between existing and
Track/Level Crossings new work
Track/Turnouts Gradient change at connection between existing and
Track/Structures new work
Track/Tunnels Effect of superelevation, super ramps through turnouts,
Track/Bridges (under and over) alignment, level, width, grade/level differences through crossovers, etc.
clear space Turnouts – operating equipment type, in-bearers, conflict
Track/Signal structures with beams between adjacent turnouts
Others
……………………………………………………….
Concept Track Layout - Documentation
Legend Impact on existing infrastructure (Platforms, OHW,
Notes Signals, drainage, etc)
References Standing room
Running kilometrage Property Boundaries
From Sydney …..To ? Requirement for retaining walls, culvert extensions and /
Track classification or amplification.
Curvature North Point
Turnout type Correct Title
Indicative earthwork cross-sections Is drawing sheet size correct.
Track identification Is content orientation correct ( Sydney on left with tracks
Track centres as horizontal as possible)
Horizontal Alignment Setting Out - Documentation
Legend Existing alignment and associated labelling.
Notes Track identification
References Track centres
Running kilometrage Grid
From Sydney …..To ? Turnout table - with turnout descriptions, signal points
Kilometrage of frame points number, etc.
Co-ordinates of frame points (Are there any issues with North Point
differences between InRail computations and Survey Scale
definitions) Correct Title
Relevant distances - T.P. to Xing, Pts to Pts, etc Sheet break-up join lines
Co-ordinates of turnouts - TOTP, PTS, XING, TOEP Adjoining sheet references
Curve and transition details, straight details (length and is drawing sheet size correct.
bearing) superelevation. Is content orientation correct (Sydney on left with tracks
Clearance points as horizontal as possible)
Indicative location of Insulated Joints with NOTE regarding
Track circuits

© RailCorp Page 29 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Checklist ED-004
Alignment Design Documentation Checklist
Vertical Alignment Setting Out - Documentation
Legend Existing profile with kilometrage and existing rail levels or
Notes natural surface.
References Formation profile
Running kilometrage and kilometrage adjustments Is drawing sheet size correct.
From Sydney …..To ? Is scale correct
Design alignment detail as a line diagram within the Datum.
section. Underbridge and overbridge location that includes
Track layout diagram showing crossovers/turnouts where kilometrages, underside of girder levels, deck levels and
necessary. clearances.
Kilometrage of frame points Existing platform coping levels and clearance to design.
Track identification
Design rail profile with proposed design rail levels,
proposed lifts, proposed design grades, grade intersection
points, vertical curves and associated radii etc.
Cross Sections - Documentation
Existing and proposed profile Approximate railway boundary
Offsets from existing or design alignment centreline Location of fences
Kilometrage location and offset location for each cross Railway tracks labelled.
section Existing and proposed rail/sleeper profile.
Are cross sections viewed and compiled in the direction of Proposed design rail level and superelevation.
ascending chainage Proposed design formation.
Datum level on each cross section. Areas and volumes calculated to earthworks level.
Offset origin Typical cross section showing batter slopes, ballast
Positive and negative offset values profile, capping layer etc. and all associated dimensions.
Features indicated and labelled.

© RailCorp Page 30 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Checklist ED-005
Special Trackwork Design Documentation Checklist
Project Identification Page 1 of 2
Location Project ID
Description Design Stage Concept
……… % Final
Design Contractor Design Approver

Design Parameters - Check the following parameters for relevance

Rolling Stock types Location of Insulated Joints
Wheel profiles Requirements for back drive / spring assist
Maximum Axle loads Swing nose crossings
Annual Tonnages Other Signal Interface Issues
Train Operating Speeds …………………………………
Rail Profiles ………………………………………………………………………….
Point operating motor type Operational service life
In bearer operation Access for maintenance
Long Bearers Type approval of all components proposed for use in
Interlacing/Splicing of bearers design.
Track Centres Final horizontal and vertical track design alignment
KE clearances to operating equipment available
Location of points motors Construction Issues (eg size of turnout panels to meet site
constraints)
Others
……………………………………………………………….
Tangential Timber & Plating Layout - Documentation
Is drawing sheet size correct. All switches and stockrails identified.
Does drawing orientation match the horizontal alignment All crossings identified with catalogue numbers.
drawing. All closure rails identified.
Is drawing scale correct Location of insulated joints
Are dimensions in mm. Location of joints and/or welds behind monobloc crossings
General arrangement of turnout / turnouts in plan view, shown
showing full timbering layout. Relevant notes and references.
All timber spacings and orientations shown. Correct Title
If bearer spacing is non-standard Is content orientation correct ( Sydney on left with tracks
Has note been added to track setting out drawing flagging as horizontal as possible)
this? Special handling instructions Yes No
If constructor is expected to make minor adjustments to Setting out for field assembly ( eg special turnouts)
suit has this been flagged on the setting out drawing? Installation manual
If more than minor adjustments are required has Maintenance manual
timbering drawing been supplied for the non-standard
component?
Conventional Timber & Plating Layout - Documentation
Is drawing sheet size correct. All crossings identified with catalogue numbers.
Does drawing orientation match the horizontal All closure rails identified.
alignment drawing. Location of joints and/or welds behind monobloc
Is drawing scale correct crossings shown
Are dimensions in mm. Location of insulated joints
General arrangement of turnout / turnouts in plan Material, plating, timbers and closure lists shown.
view, showing full timbering layout. Relevant notes and references.
All timber spacings and orientations shown. Correct Title
All plating to be shown and identified with catalogue Is content orientation correct ( Sydney on left with
numbers. tracks as horizontal as possible)
All switches and stockrails identified Special handling instructions Yes No
Switches and stockrails curvature / setting shown. Setting out for field assembly ( eg special turnouts)

© RailCorp Page 31 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Project Identification Page 2 of 2

Location Project ID
Track Components - Documentation
Is drawing sheet size correct. Flangeway widths and depths
Does drawing orientation match the Timber & Crossing nose profile, shape and ramp rate
Plating Drawing Checkrail height above running rails
Is drawing scale correct Maintenace requirements
Are dimensions in mm. Scale
Is First Angle Projection used. Correct Title
General Arrangement showing plan, elevation, end Sheet break-up join lines
elevation and sections as required to fully detail the Adjoining sheet references
component. is drawing sheet size correct.
Assembly drawings and procedures. Is content orientation correct (Sydney on left with
Material specifications and finishes. tracks as horizontal as possible)
Welding procedures. Type approval documentation for new products,
General shape and orientation and full listing of manufacturing processes.
insert coordinates for concrete ties.
Relevant notes and references.

© RailCorp Page 32 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Checklist ED-006
Sundry Design Documentation Checklists
Project Identification Page 1 of 1
Location Project ID
Description Design Stage Concept
……… % Final
Design Contractor Design Approver
Permanent Speed Design Documentation Checklist
Effect of applied superelevation, rate of change of super temporary speed restrictions in the immediate section of
deficiency, track
turnouts and adjacent infrastructure. - Track/OHW – Unprotected level crossings
alignment, structure and track centre clearances inspection/maintenance regime etc - will it need to
Type of rollingstock to be allowed for change? - Sighting times for maintenance staff working
Speed differentials approaching turnouts under NAR rules
Track configuration (concrete/steel/timber – ballast/slab) Access issues, maintenance and emergencies
Signal braking distances (overlaps) Any change to track possession arrangements
Level crossing warning times Driver sighting of speed signs
OH traction capacity Speed sign density
Network Rules compliance (placement of speed signs) Documentation
Platforms TOC Manual
Bridge capacity to handle increased speed Others
Permanent speed restrictions due to other than geometry ……………………………………………………………….
design (bridge capacity etc)
Transit Space Documentation - Checklist
Maximum Infringement/s to Structure Gauge Checked Speed
Minimum Clearances to Kinematic Envelope Checked Inspection/maintenance regime etc - will it need to
Track/OHW – alignment, mast clearance, wire height at change?
mast and mid-span Access issues, maintenance and emergencies - Safe
Existing Track/New track/realigned track alignment, level places for staff under safeworking conditions –
Track configuration (concrete/steel/timber – ballast/slab) embankments, multiple tracks, platforms etc
Effect on Track Centres Checked Any change to track possession arrangements
Type of rolling stock to be used checked - NR Locos have Usage factors such as numbers of trains.
extra clearance requirement
Do clearances take account of transitions and turnouts
(turnouts at platforms a trap) - Platform gap, minimum
radius
Detail Survey Documentation Checklist
Topographical details such as embankments, cuttings, Known underground services
rivers, creeks or watercourses including direction of flow. Boundaries
All fixed points Fences and gates.
Buildings Roads, road names
OHW structures Access roads and walkways
Signal equipment, huts troughing and signal rodding. Existing trackwork and track nomenclature
Bridges (under and over) and openings Turnouts
Level Crossings Kilometrages.
Platforms and platform number. Schedule of survey marks/control.
Drainage details ie sumps, culverts, headwalls and pipes. Reduced level.

© RailCorp Page 33 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix E Verification Checklist

Checklist ED-007
Design Verification & Approval Checklist
Project Identification Page 1 of 1
Location Project ID
Description Design Stage Concept
……… % Final
Designer Design Approver
Verification Checklist
Aspect to be checked & verified Required Completed Independent Checker Reference
Signature documents
Detailed Design Requirements in YES NO YES NO
Accordance with Discipline Checklist
Are key design assumptions and YES NO YES NO
Standards appropriate for compliance
to Works Brief /Project Specification
Engineering Authority delegated in YES NO YES NO
accordance with RailCorp Policy
Design checks completed and report YES NO YES NO
available?
Hazard and Risk Analysis completed YES NO YES NO
and results available? ONGOING
Interface requirements verified? Track YES NO
Signals YES NO
Civil YES NO
Comms YES NO
OHW YES NO
Power YES NO
Drainage YES NO
Operating YES NO
Safeworking YES NO
Statutory Approvals and Licenses YES NO YES NO
obtained
Design Documentation completed and YES NO YES θ NO θ
ready for use
Test requirements defined and test YES NO YES θ NO θ
plans available
Maintenance requirements reviewed YES NO YES NO
and updated ONGOING
Operating and Maintenance Manuals YES NO YES NO
Updated ONGOING
Comments : …………………………………………………………………………………………………………………………….
…………………………………………………………………………………………………………………………………………..
…………………………………………………………………………………………………………………………………………..
Certification and Design Approval
I certify that all required actions have been Signature Printed Name Date
completed or are planned and that the
design is ready for release to construction
and/or use

© RailCorp Page 34 of 54
Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix F Plan Presentation – Horizontal Alignment Design

A5-8
A5-3 A5-6

A5-7

A5-5 A5-4

A5-11
A5-9

A5-2 A5-12

A5-10 A5-1

A5-11
A5-15

A5-17
A5-13

A5-16

A5-14

© Rail Corporation Page 35 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A5-1 Figure A5-2

Figure A5-3

Figure A5-4 Figure A5-5

Figure A5-6

© Rail Corporation Page 36 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A5-7

Figure A5-8 Figure A5-9

Figure A5-10 Figure A5-11

Figure A5-12 Figure A5-13

© Rail Corporation Page 37 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED
 RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A5-15 Figure A5-14

© Rail Corporation Page 38 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED
RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix G Plan Presentation – Track Setting Out Details

A6-8
A6-4 A 6-6

A6-16

A6-1

A6-2 A6-7
A6-14 A6-14

A6-5
A6-9

A6-12

A6-15
A6-13

A6-3 A6-11
A6-10

© Rail Corporation Page 39 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A6-1 Figure A6-2

Figure A6-3

Figure A6-4

Figure A6-5

Figure A6-6

© Rail Corporation Page 40 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A6-7

Figure A6-8 Figure A6-9

Figure A6-10 Figure A6-11

Figure A6-14

Figure A6-15

Figure A6-12 Figure A6-13

Figure A6-16

© Rail Corporation Page 41 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification— Track
Track Design SPC 203

Appendix H Plan Presentation – Vertical Alignment Design

A7-12 A7-13

A7-11

A7-1
A7-10

A7-17

A7-14

A7-11

A7-2 A7-15

A7-7 A7-8 A7-9

A7-18
A7-6
A7-5
A7-16
A7-4
A7-3

© Rail Corporation Page 42 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A7-1 Figure A7-2

Figure A7-3

Figure A7-4

Figure A7-5

Figure A7-6

Figure A7-7

Figure A7-8 Figure A7-9

Figure A7-10 Figure A7-11

© Rail Corporation
Issued June 2012 UNCONTROLLED WHEN PRINTED
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A7-12 Figure A7-13

Figure A7-15

Figure A7-14

Figure A7-16

Figure A7-17

© Rail Corporation
Issued June 2012 UNCONTROLLED WHEN PRINTED
RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix I Plan Presentation – Field Layout for Tangential Turnouts

A8-4
A8-5

A8-2 A8-3

A8-4

A8-7
A8-6

A8-1
A8-8

© Rail Corporation Page 45 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A8-1

Figure A8-2

Figure A8-3

Figure A8-5

Figure A8-4 Figure A8-6

© Rail Corporation
Issued June 2012 UNCONTROLLED WHEN PRINTED
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A8-7 Figure A8-8

Fig A8-9

© Rail Corporation
Issued June 2012 UNCONTROLLED WHEN PRINTED
 RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix J Plan Presentation – Tie Layout and Details for Tangential Turnouts

A9-5 A9-9

A9-6

A9-4

A9-2
A9-1
A9-7
A9-8

A9-3

A9-2

© Rail Corporation Page 48 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
 RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A9-1 Figure A9-2

Figure A9-3

Figure A9-4 Figure A9-5 Figure A9-6

© Rail Corporation Page 49 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A9-7

Figure A9-8 Figure A9-9

© Rail Corporation Page 50 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix K Plan Presentation – Timber and Planting for Conventional Turnouts

A10-10 A10-5
A10-1

A10-6

A10-3 A10-4
A10-9 A10-9 A10-2

A10-11

A10-7

A10-8
A10-9

© Rail Corporation Page 51 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A10-1

Figure A10-3

Figure A10-2

Figure A10-4
Figure A10-5

© Rail Corporation Page 52 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Figure A10-6 Figure A10-7

Figure A10-8

Figure A10-9

Figure A10-9

Figure A10-10

© Rail Corporation Page 53 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6
RailCorp Engineering Specification — Track
Track Design SPC 203

Appendix L Guidelines for Catchpoint Design

The requirement for catchpoints and the operational scenarios for function are
determined by the Chief Engineer Signals. This includes any preliminary controls such
as trainstops.

There is a need to consider the different vehicle types that may operate over the
catchpoints, such as freight trains and track machines. The risk consequences need to
be balanced. For abnormal operations (work trains or track machines on passenger only
lines) the risk exposure is low.

The track designer must select the most appropriate mechanism of derailment using
different catchpoint design features. Standard devices that can be used include throw off
rails, guard rails or ballast drags. Deflecting devices need to be secure enough to fulfil
their intended function. Strategies for managing the derailed train are at the discretion of
the track designer.

The design intent is to provide a minimum clear landing area appropriate for the vehicles
being derailed. For passenger trains the standard design for speeds up to 25kph is a
landing area 40m long as shown in ESC 250.

The design rules for passenger trains for more complex situations are as follows:

• The maximum speed allowed will normally be the permitted track speed.
• Allow for a deceleration of 1m/sec2 from the point of derailment (note that the
overhang of the vehicle needs to be considered).
• If a train trip has taken place prior to the point of derailment the Chief Engineer
Signals will provide the expected speed at the catchpoints.
• Where the train enters a ballast drag or equivalent (min 300mm deep) a
deceleration of 3m/sec2 can be used.

Clear landing areas must be assessed for any unusual consequence e.g. Public facilities
or geographical features.

For light locomotives or track machines similar rules can be used (though train trips will
not be effective).

The design rules for freight trains are as follows:

• For freight trains the degree of control provided by the signalling system needs to
be considered in the catchpoint design (consult with the Chief Engineer Signals).
• Catchpoints are effective in situations where a driver might inadvertently miss or
misread a signal particularly when coming out of a yard. Where a freight train
repeatedly runs through red signals it could as easily run into the back of another
train. Catchpoints do not address this kind of scenario.
• An appropriate low speed and a nominal deceleration rate of 0.5m/sec2 should be
assumed from the point of derailment.

Note that the landing for derailed vehicles must provide an even ramp (so the train
doesn’t tilt over) and must be clear of obstacles that could impact significantly on the train
or if struck by the train cause an untoward consequence (e.g. damage a portal structure
and potentially impacting on main line trains running at track speed) and minimise the
potential for damage to other infrastructure.

© Rail Corporation Page 54 of 54

Issued June 2012 UNCONTROLLED WHEN PRINTED Version 1.6