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Event Organiser: ICE

Hull & Humber River Defences Design & Construction of Piled Maritime Walls, online

  • Webinar
  • Online
  • 18 January 2021
  • 18:00 - 19:00
Hull & Humber River Defences Design & Construction of Piled Maritime Walls, online

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ICE Wales Cymru Ground Engineering Group webinar

The Hull River Defences and Humber Hull Frontages comprise Design & Build flood defence contracts awarded to a BAM Mott MacDonald JV of value approximately £70M, under the Environment Agency’s WEM Lot 4 framework. Severe corrosion of existing sheet piled walls at the low water level threatened to cause widespread collapse of the existing river walls which would impact river navigation as well as increasing flood risk to thousands of properties. The new structures include tied and anchored sheet piled walls as well as 12 cantilever combi walls. The total plan length of piled walls is over 2km and pile lengths are up to 19m. Challenges include very soft ground, works in proximity to fragile structures and tidal conditions.

The presentation will explain the design methodology where there is incentive to start construction at the earliest opportunity despite the need to carry out many surveys to feed into the design. Key aspects of the design include the reduction of cost and carbon by early comparison of tubular and high modulus piles, advanced ground investigation methods to directly assess soil stiffness; and use of finite element analysis to supplement traditional soil-structure interaction, consideration of scour and the durability strategy. Feedback from the construction will include observed ground movements, back-analysis and implementation of contingency plans during land-based installation of piles from behind an old structure.


Alan Willoner

Alan Willoner

Alan is a Chartered Civil Engineer and Fellow of the ICE with over 20 years of experience in both the design and construction of geotechnical structures. His previous experience includes working for specialist Ground Investigation and Piling Contractors, Main Civil Engineering Contractors and Design Consultancies. He currently leads the geotechnical team in the Mott MacDonald office in Sheffield and leads geotechnical design elements of numerous D&B contracts throughout the UK and overseas. Alan is particularly enthusiastic about developing safe, sustainable, buildable and economic designs.

Jian Hao Chan

Jian Hao Chan

Jian is a Chartered Civil Engineer experienced in the design of geotechnical structures. After completing his MEng from Imperial College in 2016, he was primarily involved in the design of numerous flood defence schemes in the Yorkshire and Humber region. He is currently working on Foundations design for major assets on High Speed 2 Phase 1, including viaducts, overbridges and underbridges as part of the Mott MacDonald SYSTRA design joint venture. Jian is keen on developing practical and sustainable solutions for the built environment.

Event venue

United Kingdom

For more information please contact:

Felicity White

e: [email protected]