Overcoming the challenges of constructing against the tides
With an average 6.5m tide change twice a day, minimising works on site was a priority. The pier was designed so that 90% of the pontoon and the walkway structure connecting the riverside – including the installation of details such as balustrading – were constructed offsite in The Netherlands and shipped to London. Choosing a modular construction approach allowed us to keep the costs within budget and reduce life-cycle costs throughout the design.
To increase the pier’s resilience against passing ships, our maritime team incorporated offshore wind turbine technology. This strategy avoided the construction of time-consuming welds in the tidal zone, which would have also caused disruption to ship traffic along the river. The design also included a dredged pocket with a submerged retaining wall, accommodating tidal movements to increase protection. As a key driver for third-party approvals, our analysis demonstrated that the design did not compromise the stability of the existing river wall and flood defences.
As the pier is exposed to the elements and day-to-day wear of embarking ferries and tidal changes, choosing the right construction materials was critical. We selected stainless steel due to its anti-corrosive nature, robustness, durability and low maintenance requirements.
Designing to complement the natural surroundings
To preserve the views across the river, the structure was designed to integrate into its surroundings. The pier simulates a thin canopy running parallel to the heavier horizontal structure, resolving the conflict between fitting into the landscape while creating a visual presence. The openness of its shape achieves the project’s desired level of transparency, allowing visitors to enjoy unrestricted views of the River Thames. Embedded within the architectural design of the project, wayfinding and signage were also considered to provide minimal impact on views.