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Proposed Mixed Use Development
157 Redfern St, Redfern
Preliminary Track Monitoring Plan
Down Illawarra Relief, Redfern
Date: June 2009
Reference: 113470
Revision: 00
157 Redfern St, REDFERN
Preliminary Track Monitoring Plan
Document Control
Rev Document No. Document Title Date Prepared by Reviewed by Approved by
No
Track Monitoring Plan
Hard & Julian
00 113470 Prelim Rail Crossing 17/06/2009 Colin Hard
Forester Bosman
Botany Goods Line
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TABLE OF CONTENTS
1.0 Purpose .......................................................................................... 5
2.0 References ..................................................................................... 5
3.0 General Description and Requirements ...................................... 6
4.0 Exclusions from this Specification.............................................. 6
5.0 Monitoring ...................................................................................... 6
5.1 Scope ......................................................................................................................... 6
5.2 Location of Monitoring Points................................................................................. 6
5.2.1 Measurement during works ................................................................................. 6
5.3 Measurement equipment and accuracy ................................................................. 7
5.4 Monitoring Frequency .............................................................................................. 7
5.5 Data presentation ..................................................................................................... 7
5.6 Distribution of Monitoring Data .............................................................................. 8
6.0 Notification and intervention levels............................................. 8
6.1 Rail Monitoring Intervention Levels........................................................................ 8
6.1.1 Alarm Level 1....................................................................................................... 8
6.1.2 Alarm Level 2....................................................................................................... 9
6.1.3 Alarm Level 3....................................................................................................... 9
7.0 Emergency Procedures .............................................................. 10
8.0 Safety and Training ..................................................................... 10
8.1 157 Redfern St, REDFERN ..................................................................................... 10
8.1.1 RailCorp Property .............................................................................................. 11
Appendix A – Rail Safety & Monitoring Plan – Risk Assessment.... 12
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Appendix B – Indicative Works Schedule .......................................... 13
Appendix C – Monitoring Network & ULX Clearance ........................ 13
Appendix D – Existing Track Parameters .......................................... 13
Appendix E – Geotechnical Investigation .......................................... 13
Appendix F – Emergency Contact & Distribution Lists .................... 13
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1.0 Purpose
Deicorp intends to develop a mixed use building on the site of the existing Redfern RSL at
157 Redfern St, Redfern. The development will include underground car parking, retail &
commercial tenancies and a residential tower.
The site is adjacent to Redfern Station. The track of closest proximity to the site is the Down
Illawarra Relief in the ESR Tunnel. The sites’ northern and southern boundaries are
approximately adjacent to 1.24km and 1.29km respectively. The western boundary and face
of excavation is approximately 15 metres from the eastern edge of the ESR tunnel. The
design basement is RL 15.8 AHD, being approximately 15 metres below street level. Existing
rail levels will need to be determined by survey along with the precise location of the tunnel
relative to the site works.
This document sets out the technical requirements for monitoring of the Down ESR Tunnel
during the demolition, excavation and construction phases of the project. Following survey it
will include clearances to any services and infrastructure, survey requirements, monitoring of
infrastructure for settlement & deformation, limits to be observed and reporting and data
requirements.
2.0 References
Re-development of 157 Redfern St, Redfern will be undertaken in accordance with the
following Codes, Standards and Requirements.
Department of Planning- Director General’s Requirements
Redfern Waterloo Authority BEP Stage 1 August 2006
Relevant Australian Standards- Construction
Building Code of Australia
TMC 211 Track Geometry and Stability (RailCorp)
TMC 203 Track Inspection (RailCorp)
ESC 210 Track Geometry and Stability (RailCorp)
Definitions
Contractor’s Competent Track Person: Person engaged by Deicorp to measure and
assess track geometry at the site listed in Section 1. The Nominated person must be
competent to examine and certify track, possess current Railcorp competencies ‘Visual
Inspect and Monitor Track’, ‘Record & Analyse Track Parameters (See TMC 203) and
‘Maintain Track Geometry’ (see TMC 211) and be acceptable to Railcorp.
Project Manager: Person nominated by Deicorp in the Site Specific Management Plan as
the contact for site activities affecting Railcorp infrastructure.
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3.0 General Description and Requirements
A geotechnical investigation has been completed for the development. It was found that the
original construction of Redfern Station will have relieved any insitu stresses. As such, the
proposed excavation will have a negligible affect on the adjacent station structure.
4.0 Exclusions from this Specification
This specification does not include Railcorp’s requirements for timing of works or protection
of rail traffic by Worksite Protection.
5.0 Monitoring
5.1 Scope
Should Railcorp decide it is necessary, Deicorp will contract a member of the Railcorp
Engineering Surveying Panel to implement a monitoring system in the Down Illawarra Tunnel
and Redfern Station in the vicinity of the proposed works. Deicorp will monitor the structures
at pre-determined intervals during demolition, excavation and construction to ensure the
track remains safe for the passage of trains. If movement greater than predicted is detected
increased monitoring frequency may be required.
5.2 Location of Monitoring Points
Location of monitoring points will be determined following a detailed survey of Railcorp
structures and infrastructure. A proposed monitoring point layout will be forwarded to
Railcorp for review prior to installation..
Track
A track alignment survey will be completed checking long & short twist, top, line & gauge.
The track survey results will be reviewed by the Deicorp competent track person to
establish permissible movements of track to reach defined action levels at each monitoring
point. These will be required in the event the tunnel and station structures movement is
greater than predicted.
NOTE: Unless otherwise agreed the Alarm levels include any pre-existing variations
in geometry.
HOLD POINT: Track survey results and proposed action levels will be approved by
the Railcorp Civil Maintenance Engineer or his delegate.
5.2.1 Measurement during works
After commencement of jacking operations, rail monitoring will be undertaken with the
variances from the baseline readings compared to previously defined action levels. The
survey monitoring results will be conveyed to site staff once the results have been calculated
and compared to the Base Line Values.
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5.3 Measurement equipment and accuracy
The rail monitoring surveys will be carried out by a member of the RailCorp Engineering
Authority Panel. Survey Party Leaders will be required to have Project Specific Engineering
Authority issued by the Railcorp Chief Surveyor.
A Rail Survey Procedure will be prepared that meets the requirements of RailCorp
Specifications SPC 211 Section 6 “Survey for track and other infrastructure” covering,
• Instrumentation
• Instrument Calibration
• Instrument Setup
• Survey Targets
• Observations
• Levels
• Reporting comparison to Engineering Standard ESC 210: Track Geometry and
Stability and Engineering Manual TMC 203: Track Inspection.
Measurement of track geometry will be undertaken using the methods of measurement and
equipment detailed in TMC 203: Track Inspection.
This procedure will be approved by RailCorp prior to commencement of the installation.
5.4 Monitoring Frequency
Survey and track measurements will be taken at the following frequencies:
• Prior to commencement: A minimum of three complete surveys of all points to be
taken. Results to be averaged to produce the baseline values. Variations in results
to be analysed to determine ambient range.
• During demolition, excavation & construction- monitoring will be conducted at
intervals approved by Railcorp. These intervals may change according to changing
risk from various stages of the development or if movement greater than predicted
is detected
5.5 Data presentation
Data may be presented in numerical and graphical formats detailing lateral and vertical
movements. All result spreadsheets will be accompanied with a covering report providing
details for each site-monitoring visit including date of survey, time of survey, name of
surveyor, temperature at commencement of the survey, general weather conditions during
the course of the survey and any remarks or comments relative to the survey.
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5.6 Distribution of Monitoring Data
Data is to be processed and results provided to the RailCorp appointed person and to the
Deicorp representative for distribution. A Data Report Distribution List is included in Appendix
E.
6.0 Notification and intervention levels
6.1 Rail Monitoring Intervention Levels
The following table is an example only of the parameters and associated measurements to
be applied. Values will be determined from RailCorp Standards ESC 210 once the existing
track alignment and track speeds have been confirmed.
Monitoring Parameters 25% of Normal 50% of Normal 75% of Normal 100% of Normal
(min 5 mm) (min 6 mm)
Port Botany Line (50 km/hr speed limit)
Adopting 60 km/hr speed limit
Track Top (4m) 11 mm 13 mm 18 mm 21 mm
Track Line (8m) 10 mm 12 mm 16 mm 19 mm
Short Twist (2m) 8 mm 9 mm 13 mm 15 mm
Long Twist (14m) 20 mm 24 mm 35 mm 40 mm
No. 1 and 2 Yard New Sidings & James Siding (20 km/hr speed limit)
Track Top (4m) 14 mm 17 mm 23 mm 27 mm
Track Line (8m) 18 mm 22 mm 31 mm 36 mm
Short Twist (2m) 9 mm 11 mm 16 mm 18 mm
Long Twist (14m) 26 mm 32 mm 45 mm 52 mm
6.1.1 Alarm Level 1
Any detected movement > 25% but ≤ 50% of Normal Limits or where significant movements
have been detected above those predicted.
Measurements
Verify movement by reviewing and repeating the survey. The competent track person shall
carry out an immediate survey of gauge, track line and top to confirm movement and assess
track geometry.
Notification
Notify all parties following detection of movement.
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Continuation of works
If settlement has exceeded the predicted settlement the Geotechnical Engineer is to
reassess and, if appropriate, approve continuation of the work. On approval by the
Geotechnical Engineer, works shall not stop at this point but shall proceed with caution and
increased vigilance in the areas of detected movement.
6.1.2 Alarm Level 2
Any detected movement > 50% but ≤ 75% of Normal Limits where movement has been
steady.
Measurements
Verify movement by reviewing and repeating the survey. The competent track person shall
carry out an immediate survey of gauge, track line and top to confirm movement and assess
track geometry.
Notification
Notify all parties following detection of movement.
Continuation of works
The Geotechnical Engineer shall reassess and, if appropriate, recommend continuation of
the work. If the Geotechnical Engineer does not recommend continuation of the works, he
shall determine remedial measures to be implemented prior to re-commencement of the
works, to prevent further settlement. Work must not proceed unless approval has been given
by the Civil Maintenance Engineer for work that will exceed Alarm Level 3.
6.1.3 Alarm Level 3
If movement preceding this level have been gradual, alarm levels 1 and 2 control measures
shall have been introduced to prevent this level of movement occurring. Consequently, the
control measures identified for level 3 are identified on the basis of a sudden movement only.
If a sudden movement of > 50% but ≤100% of Normal Limit is detected:
Notification
Notify all parties following detection of movement.
Continuation of works
All works will cease immediately. Works shall not recommence until methodology and
monitoring procedures are reviewed and remedial measures/revisions, are approved by the
Civil Maintenance Engineer.
If a sudden movement of >100% of Normal Limits is detected:
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Notification
Apply emergency procedures immediately. Notify all parties.
Continuation of works
All works will cease immediately. The competent track person shall assess the track
geometry and take appropriate action. This may include speed restrictions and consultation
with RailCorp’s Civil Maintenance/Asset Engineer. Works shall not recommence until
methodology and monitoring procedures are reviewed, remedial measures/revisions are
approved by RailCorp (Principal Geotechnical Engineer and Chief Engineer Track) and track
geometry corrective works have been undertaken.
7.0 Emergency Procedures
In the event of an emergency, the competent track person will immediately stop trains and
notify Train Operations in accordance with RailCorp Standards and Procedures.
The Project Manager on site will notify the people on the Emergency Contact List. An
Emergency Contact List is included in Appendix E.
The Water Delivery Alliance will undertake all tasks to ensure site and train operation safety
during the interim while RailCorp initiate their Emergency Response Procedure.
8.0 Safety and Training
8.1 157 Redfern St, REDFERN
These works will be carried out as part of the 157 Redfern St, Redfern re-devlopment. The
Site Specific Management Plan will form the basis for safety requirements and
responsibilities.
All personnel working in connection with the Project shall:
• have completed the Project Safety Induction;
• hold a WorkCover General Construction Induction card;
• comply with the requirements of the Project Plans and procedures;
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8.1.1 RailCorp Property
Railcorp structure monitoring activities will require works to be completed within the rail
corridor.
These works will be subject to these additional requirements:
• Only those workers required to complete the works shall enter the rail corridor
• All personnel required to enter the rail corridor will have current Rail Industry Safety
Induction accreditation
• A certified Worksite Protection Officer (WPO), provided by the Surveyor, will
accompany personnel within the rail corridor at all times
• All personnel working within the rail corridor will follow the directions of the WPO.
• Works within the rail corridor shall be completed in accordance with the RailCorp
approved site specific Safe Work Method Statement (SWMS) and the WPO’s daily
Site Assessment
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Appendix A – Rail Safety & Monitoring Plan – Risk Assessment
Likelihood
RISK RATING TABLE
Consequence Likelihood Risk Level 1 2 3 4 5
1. Catastrophic >$100M / Multiple Fatality 1. Certain E Extreme 1 E E VH VH H
Consequence
2. Major <$100M / Single Fatality 2. Likely VH Very High 2 E VH VH VH H
3. Serious <$10M / Life Threatening Injury 3. Possible H High 3 VH VH H M L
4. Important <$1M / Medical Treatment 4. Unlikely M Moderate 4 H H M M L
5. Minor <$10K / First Aid 5. Rare L Low 5 M M L L L
Issue Untreated Risk Control Treated Risk
Consequence Likelihood Risk Level Consequence Likelihood Risk Level
1. Collision between train and 2 3 VH Minimise work within rail corridor 2 5 H
worker whilst working within rail All personnel entering the rail corridor to be RISI
corridor accredited
Certified WPO to monitor rail activity and control works
whilst works within rail corridor are being carried out
WPO to carry out site assessment and brief workers
prior to commencement of work
2. Demolition results in damage 3 4 M Geotechnical assessment 3 5 L
to Railcorp structures, leading Monitoring of Railcorp structures
to interruption to rail services Liaison with RailCorp for Contingency Planning
3. Excavation results in damage 3 3 H Geotechnical assessment 3 5 L
to Railcorp structures, leading Design of shoring
to interruption to rail services Monitoring of Railcorp structures
Liaison with RailCorp for Contingency Planning
4. Construction results in damage 3 4 M Geotechnical assessment 3 5 L
to Railcorp structures, leading Design of crossing within stable strata
to interruption to rail services Monitoring of Railcorp structures
Use of drilling muds to maintain open borehole
Liaison with RailCorp for Contingency Planning
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Appendix B – Indicative Works Schedule
Appendix C – Monitoring Network & ULX Clearance
Appendix D – Existing Track Parameters
Appendix E – Geotechnical Investigation
Appendix F – Emergency Contact & Distribution Lists
The following contacts should be advised of the emergency in the order shown,
Order Organisation Contact Name Position Contact Number
1 RailCorp Train Operations 02 9379 1743
2 Emergency Services 000
3 RailCorp Civil Maintenance
Engineer
4 RailCorp Geotechnical Engineer
5 RailCorp Project Manager
6 Deicorp Project Manager
7 Deicorp Project Engineer
The following data report distribution list should be used for distribution on a daily basis in accordance
with Section 5.6.
Organisation Position Name Email address
Deicorp Project Manager
Deicorp Project Engineer
RailCorp Civil Maintenance
Engineer
RailCorp Project Manager
RailCorp Geotech Services
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