The following key case studies exemplify the versatility and outstanding success of the novel and highly successful King Sheet Piling (KSP®) retaining wall system.
M25 DBFO Widening Junctions 16 - 23 and 27 – 30, UK
King Sheet Piling (KSP) was first used in 2009 on this prestigious, high-profile and fast-track project to widen 63 km of motorway in the northern sector of the M25 London Orbital Motorway. Introduced without prior trial, it proved a resounding success, with over 25km of KSP wall forming part of Europe’s largest land-based use of sheet piling. Steel saving of 35% to 40% was typical. The KSP installation speed was key to the project opening 3 months early and helped deliver KSP savings of over £10M, shared equally with the Highways Agency.
A421 Marston Pumping Station, UK
Incorporation of KSP in 2009/2010 in the re-design of a pumping station saved £800k and avoided a projected 3 month programme over-run, resulting in savings of £2.7m for Client, The Highways Agency.
M4/M5 Managed Motorway, UK
KSP’s versatility was proven in 2011/2012 by use in weak rock where sheet piles would normally be rejected. It saved valuable vegetation screening, enhanced safety and was built in 1/3 the time of a gabion alternative.
Westbury Railway Embankment Stabilisation, UK
KSP was used to great success in stabilising a railway embankment for Network Rail, saving 41% of steel and more than halving noise for nearby residents.
Contact Us
To use KSP on your project, see Guidance to Users updated 15 July 2021 & new Permit to Use.
Latest News
November 2024: Installation of KSP walls is currently well advanced or completed on the M25 Junction 10 Upgrade and on motorways across the Southern and Midlands sections of the National Highways network as part of the Smart Motorway Alliance programme. KSP also helped make valuable savings on major temporary works on parts of Balfour Beatty Vinci’s Midlands section of HS2.
May 2023: KSP walls are due to start shortly for slope stabilisation on both rail and highway applications, taking advantage of the important benefit that KSP facilitates groundwater flow.
2022: Saw completion of further KSP walls on the M1, M45 and M56 motorways.
31 August 2021: Correct Link to Technical Guidance Download reinstated (inadvertently re-directed in website upgrade of 28 July 2021).
July 2021: Installation of the last KSP wall on M4 Junctions 3 – 12 Smart Motorway marked completion of many kilometres of Smart Motorway KSP walls across the Highways England network. KSP walls are currently being designed for further schemes under the Smart Motorway Alliance programme.
