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THE GLENFIELD TO LEPPINGTON RAIL LINK
David Putley, Principal Engineering Manager Services, Transport for NSW David Polkinghorne, Design Manager, John Holland
Challenges and Solutions
The challenges and solutions to facilitate growth in south-west Sydney with NSW's newest railway infrastructure.
Agenda
• Project requirements • Key elements • Design solutions • Approvals and changes • Construction solutions • Case studies • Engineer requirements • Conclusion
Presenters The two Davids
David Putley Transport for NSW • 35 years railway project management & civil engineering • Client and supply
David Polkinghorne John Holland • 35 years contractor D&C experience
Why GLRL?
• Provide sustainable development for the wider South West Growth Centre
• Provide direct transport link to/from the city • Improve services through congestion relief
and extra capacity for the south west region
• Minimise environmental impacts
What is GLRL?
• Rural location • 12 km track • Two stations • One stabling yard (20
trains) • 14 bridges plus culverts • Hume Highway • Deep cuttings • High embankments • Electrical substations
Project requirements
• Reference design • Environmental Assessment • Land purchases • Ministerial conditions • RailCorp standards and TPD Works Brief • Design and construction contract • Systems engineering and assurance
Key challenges
• Route is sinuous • Through open paddocks • Stakeholders • Safety in design • Drainage and flooding • Rail systems • Rail and NSW
experience • Design changes
Keys to Success
• Safety – starts in design – continues through integration of the design &
approvals – into construction, use and maintenance – Safety In Design monthly awards – JH National Group Award for 2012
• Systems Assurance – Through all stages of design, construction &
verification
Hume Highway Underpass
• RMS requirements • Two x four lane highway with 15m median • 79.5m in length • RailCorp requirements • Two tracks, walkway and refuges • Geology • Design and construction
Cowpasture Road Viaduct
• Tiered retaining wall • JH change proposal
– 485m long; – 12m above ground; – 1:40 incline
• Change process and business case
Civil or multi-discipline requirements?
• Integrated designs – Signal sighting
• Stations • Buildings and
structures • Cut and fill (1 million
m3) • CSR & Rail Systems
• Stabling Yard • Flood management • Durability • Utility interfaces • Community • Urban design
Engineer requirements
Engineers must: • Focus upon safety into the design • Meet the requirements • Appreciate impact to others
– external – internal to project
• Value the community • Leave a great legacy
Conclusion
GLRL is a great project to be working on • Huge contribution by many • Innovative ways to work • Multi-discipline engineering • Railway systems understanding • Any changes to be business case based • Delight the customer
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