Pile Supported Roads Construction Techniques for Alberta Wetlands - - PowerPoint PPT Presentation

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Pile Supported Roads Construction Techniques for Alberta Wetlands - - PowerPoint PPT Presentation

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Pile Supported Roads Construction Techniques for Alberta Wetlands Rob Udy & Lorne McNeilly January 21, 2016 Landmark Solutions Ltd. www.landmark-solutions.ca Contact Rob Udy @ 250-804-0332 Who is Landmark? Established in 1999

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Pile Supported Roads

Construction Techniques for Alberta Wetlands Rob Udy & Lorne McNeilly January 21, 2016

Landmark Solutions Ltd.

www.landmark-solutions.ca

Contact Rob Udy @ 250-804-0332

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Who is Landmark?

  • Established in 1999
  • Professional, full service, multi-disciplined
  • Project Management, Engineering & Construction,

Environmental Enhancement, Forestry Services

  • Practical bunch, ... Solutions-oriented

From concept to completion, we design, develop and deliver ...

Landmark Solutions Ltd.

www.landmark-solutions.ca

Contact Rob Udy @ 250-804-0332

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What we do ...

Landmark Solutions Ltd.

www.landmark-solutions.ca

Contact Rob Udy @ 250-804-0332

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  • Solution requires ...
  • Single heading construction
  • Maintenance of wetland function & environmental

values

  • Competitive Cost & Favourable Timing

Open Water – End of the Road?

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  • Conventional construction methods not possible
  • Options?

Open Water – End of the Road?

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  • Long history of pile use – foundations, footings
  • More recently – embankments
  • Simple process
  • Find some wood
  • Drive some piles
  • Build something on top of it ... like a road!

History of Pile Supported Construction

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  • Long history of pile use – foundations, footings
  • More recently – embankments
  • Simple process
  • Find some wood
  • Drive some piles
  • Build something on top of it ... like a road ... or a city

History of Pile Supported Construction

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History of Pile Supported Construction

Santa Maria della Salute

Completed in 1681 1.1 million timber piles

  • St. Mark’s Bell Tower

Collapsed in 1902 1000 yr old piles in perfect condition

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Open Water Crossing – Case Study

  • Describes the challenge and solution for constructing an

elevated road across open water using single heading construction.

  • Step by Step
  • Materials
  • Equipment
  • Next Steps ...
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Next Steps

  • Develop relationship between vibratory driven and drop

hammer driven piles

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Next Steps

  • Test under a variety of conditions
  • Soil type
  • Pile spec (species, diameter, quality)
  • Depth
  • Pattern (# per mat)
  • Operational testing on an ongoing basis for all projects

requiring piles

  • Develop “playbook” for pile supported roads and structures

to improve cost effectiveness

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Next Steps

  • Cost Considerations
  • Scale of project (mob/ demob)
  • Width (single lane with pull-outs vs double-lane)
  • Depth and availability of granular fill,
  • Depth of peat,
  • Availability of timber
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Other Possibilities

  • Retrofit existing roads with pile supported culverts/ bridges
  • Refine designs for floating road (EPS foam)
  • Refine design for deep peat conditions
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Summary - Pile Supported Roads

  • Minimization technique
  • Hydrology is minimally impacted
  • Continuous “causeway” possible in peat up to 4-5 m deep
  • Range of techniques available depending on peat depth
  • Locally available timber piles combined with GRS exceeds

CL 800 load rating

  • Reversible process
  • Restoration is possible for existing roads
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Landmark Solutions Ltd.

www.landmark-solutions.ca

Contact Rob Udy @ 250-804-0332