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The Amsterdam North/Southline Building a subway in a challenging environment

The Amsterdam North/Southline Building a subway in a challenging environment. Peter Dijk NETLIPSE Network meeting October 20th, 2008. Introduction. Amsterdam. 750.000 residents 220 km2 Divided in 15 boroughs 4.457 residents per km2

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The Amsterdam North/Southline Building a subway in a challenging environment

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  1. The Amsterdam North/SouthlineBuilding a subway in a challenging environment Peter Dijk NETLIPSE Network meeting October 20th, 2008

  2. Introduction

  3. Amsterdam • 750.000 residents • 220 km2 • Divided in 15 boroughs • 4.457 residents per km2 • 2.275 residencies per km2 • 1 out of 3 residents owns a car • 253 mln. public transport users in 2006 • 987 mln. kilometers travelled by public transport (2006)

  4. The North/Southline • Length: 9.5 km • 9 km new infrastructure • 6 km underground • 8 stations • 4 deep stations • 2 x 3.8 km bored twin tunnels • Budget: € 2.25 bn. • Commissioning date 2015 • Financers: • Dutch Government • Amsterdam City Council • Journey time North/South: 17 minutes • Journey time same route by present public transport: 35 minutes

  5. Bird’s eye overview of the project

  6. Stations of the North/Southline

  7. Building techniques Cut and cover method + immersion tunnel In-situ tunnels (Caissons) In situ tunnel (traditional) In-situ tunnel (traditional) Above ground Bored tunnel (4.2km) South City centre North

  8. Reasons for the North/Southline • Accessibility city centre • Connection to the region • No damage to cultural inheritance • Tourism • More efficiënt form of public transport • Incentive for economic development • Reduction of motorised transport • Improving the quality of life

  9. The environment • Social environment (residents in the immediate surroundings of the building activities) • Political environment • (geo)physical environment: • Geological conditions demand special techniques • Construction sites at very close range to existing residential area (down to less than 2 metres!)

  10. Multiple challenges • Scale • Complexity • Technology • Political environment: Central vs decentralized decision-making processes • Long-term planning (time & costs) • Communication • Diversity of context factors:

  11. Context factors: • History (Oostlijn) • Various conflicting interests • Stakeholders • Politicians • Residents • Constructors • And many more.. • Technology • Rules and legislation

  12. Boundary conditions & constraints • Historical buildings in Amsterdam • Inhabitants are proud of their city • Many permits & licenses required • Decisionmaking processes on different jurisdictional levels (municipality versus local boroughs) • No demolition of buildings • As little disruption as possible • Prevent damage of buildings • Liveability • Accessibility of city, shops & houses

  13. Surrounding aspects (1) • Minimal disruptions during construction: • no vibrations and no lowering of groundwater level = use of slurry walls • no damage to houses = strengthening the piles • logistic disruption = mainly use of transport by water • accessibility = continuity of traffic • economical damage = compensation

  14. Surrounding aspects (2) • optimal definite situation: • maintain the city = no demolition • fit in surrounding = involvement in design of station entrances • opportunities and threats = optimal station locations • transport system = good transfer facilities to trams and sufficient parking facilities for bicycles • more space on the street = refurnising the CS surroundings

  15. Environmental projects • CAN-area • Project “Overhoeks” • Central Station • Rode Loper • Europaplein • Amsterdam Station Zuid

  16. Managing the environment • BLVC-plan: accessibility, liveability, safety, communication • Cooperation between: • Constructors • Supervisors • BLV- Coordinators • Local Districts • Community Liaison Officers • Project Management

  17. Liveability • The Community Liaison Officer • Guards the liveability of the community • Is responsible for all communication about the construction site • Solves problems and deals with complaints • Liveability Fund • Often individual measures: • Double windows • Housing exchange • Hotel accommodation • Substitute workplace • Compensation for additional moving costs • Cleaning activities in vicinity of building site • Extra help for the elderly

  18. Safety is the number one priority • On the construction site • Around the construction site: • Monitoring • Loading/unloading • Fencing • Fire alarm • Compensation grouting • On call duty (24/7)

  19. Communication • 1st level = community communication • 2nd level = project communication • Arts & cultural applications

  20. So much for theory

  21. Questions?

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