Pioneering Percussion Driven Earth Anchors (PDEA®) for 40 Years


Henwick Turnback – UK

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Project Overview

AMEY Rail installed a new signal in a railway cutting, and needed to provide support for the slope behind the signal, prior to construction of a proposed retaining wall.


Platipus Geotechnical Engineers suggested a cost effective and swift solution that would permanently stabilise the slope behind the signal, removing the need to construct a retaining wall as originally planned. A Platipus Conceptual Proposal was drawn up which allowed Amey Rail designers to complete the Network Rail Forms 1, 2 and 3 and issue an AFC (Approved For Construction) drawing.

Vertical Access, a Platipus Approved Installer, carried out an anchor suitability test prior to the installation of five rows of Percussion Driven Earth Anchors ( PDEA®) driven directly through a geo-mat to spread the load between the anchors and support the slope. From concept to completion this project was delivered in less than two weeks.

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