Chelsea Embankment Foreshore - Intertidal Terraces Trial

The Brief

As part of the Thames Tideway Tunnel scheme, a trial will be undertaken at the Chelsea Embankment Foreshore site to monitor and evaluate the plant species that have been proposed to be installed in the intertidal terraces zone of the permanent works. The trial will be undertaking over a period of two years.

Value-Added Solution

To facilitate the trial, Robert West Consulting have designed a temporary structure which forms a plant box system.  This structure will be located at the same level and as close as possible to the position where there the permanent intertidal terraces zone will be located (on the North bank of the River Thames). 

The temporary structure is formed of four no. HZ steel piles and three no. steel trusses supporting two levels of terrace planting modules and an intermediate walkway for access and inspection. The two levels of terraces are both formed of nine individual plant modules, which are each formed of timber frames.

The design has been detailed to minimise working times within the tidal environment – the connection between the piles and the main steel superstructure is composed of a hat type detail, which minimises the need for any site welded or bolted connections within the tidal environment. The steel frame shall be lifted and dropped into place as a single unit – with four in-situ welds between the superstructure and the hat type detail. Thereby minimising the time spent working in the tidal environment.

Final Outcomes

The design solution simplifies the removal of the structure from the River Thames, once the trial period has been completed.  We look forward to hearing the results!

  • Committed
  • Engaging
  • Professional
  • Confident
  • Adaptable