Client: John Cradock Ltd.
Services: Geotechnical and dewatering analyses

For the River Nore crossing on the Central Access scheme, it is proposed to construct a concrete bridge which spans two mid-stream piers between east and west abutments. The pier piles and pilecap are founded at a level well below existing bed level and so a temporary works scheme is required in order to facilitate construction of the bridge piers.

Trench Control carried out the geotechnical numerical analysis of the proposed mid-stream cofferdams which involved sheet piling and high level propping support. Trench Control additionally undertook a dewatering feasibility study examining likely groundwater control volumes and potential mitigation works such as wet excavation and grout blankets.

Commenting on the project, Alan Wright, director at John Cradock Ltd. said: “John Cradock Ltd. have worked with Trench Control Ltd. on the Kilkenny Central Access Scheme and found them to be most proactive in providing a comprehensive temporary works design and subsequent installation which adopted the Client’s complex requirements”.