Retain was approached in late 2018 by HMH Civils Ltd., the Groundworks and specialist Civil Engineering Contractor. The consultant engineers employed by NTWDC, 3 E Engineering had carried out extensive ground investigations and conceptual designs which envisaged Crib Retaining Walls.
At an early stage Retain identified the need for a specialist Geotechnical consultant and Remedy Geotechnics were instructed. Their main areas of involvement were to do with global stability checks which required the provision of boreholes and pull-out calculations on the Huesker geogrid employed.
The final proposal from Retain considered:
Retain managed the iterative process amongst the numerous parties. The installed walling reached a height of 8 metres and a face area of