King Sheet Piling (KSP®)

The award-winning King Sheet Piling (KSP®) retaining wall system typically saves 35% to 40% of the steel used in a standard wall, whilst delivering marked productivity, environmental and sustainability benefits. It can be up to 4 times faster to install.

What Does KSP Offer?

KSP is a simple, radical innovation that revolutionises 120 years of sheet piling practice. It uses sheet piles more efficiently to yield typical steel savings of 35% to 40% in standard cantilever walls, whilst guaranteeing dramatic productivity, environmental and sustainability benefits.

How Does KSP Work?

Many sheet pile walls are sized for driveability, using heavier sections than required structurally for the wall. KSP harnesses the surplus structural capacity by 'thinking laterally' to use pairs of Z section piles as "kings" with lighter, shorter Z piles or "intermediates" spanning horizontally between them. For further details, including options for water cut-offs, see the Technical page.

What is KSP’s Track Record?

To date KSP has delivered:

  • Multi-million pound savings for Contractor and Client
  • De-risked critical programmes on two major projects worth a combined £1.2 billion
  • Substantial sustainability, constructability and environmental benefits
In the UK, over 25 km of KSP wall has been installed on the M25 London Orbital Motorway with further KSP walls installed on the A421 near Bedford, the M4/M5 near Bristol, the A11 in Norfolk and a railway embankment at Westbury. KSP is also at the design stage on other major infrastructure projects including M3 Smart Motorway and Crossrail SE Spur.
Contact Us

To find out how you can use a KSP wall on your project, see Guidance to Users. Contact for more information.

Latest News

8 June 2016: Up to 60% steel saved! 1.3 km of KSP walls on the A1 Coalhouse to MetroCentre Improvement achieved a new milestone, saving 44% steel on average, up to 60% steel on individual walls and 902 tonnes overall. The Arup design for Balfour Beatty included the first permanent works use of KSP walls with two pairs of intermediate piles.

15 September 2015: David Baker presented a paper entitled “King Sheet Piling (KSP) – a fundamental and innovative advance on past sheet piling practice” at the International Society for Soil Mechanics and Geotechnical Engineering’s XVIth European Conference on Soil Mechanics and Geotechnical Engineering in Edinburgh in September, 2015. This prestigious conference attracted over 1,150 delegates made up largely of leading practitioners from 65 countries.