Putney to Southfields Embankment Stabilisation

Ramwall

Ramwall

OWNER: London Underground Nominee SSL Ltd

DESIGNER: Pell Frischmann / OTB Engineering Ltd.

CONTRACTOR: Kier

PURPOSE: Retaining toe walls & abutments along re-graded embankments

RAMWALL TYPE: 8m diameter 200mm x 200mm galvanised RAMWALL mesh plus 5m diameter, 50mm x 50mm galvanised facing mesh, 25mm rebar spikes

RAMWALL FILL: Hardcore

London Underground SSL is undertaking and extensive programme of embankment stabilisation on the District Line using piled reinforced concrete retaining walls and re graded slopes. To form end-walls in the variable slopes RAMWALL has been selected because of its adaptability to the difficult and constrained geometry imposed by the new and existing structures. In particular, the need to prevent additional earth pressures created by the reprofiling work from imposing further ground loadings on adjacent structures and to maintain track ballast retention adjacent to bridge abutments.

RAMWALL provides a fully reinforced solution that is tailored to fit the site geometry constructed by the site personnel with only minimal training and supervision. In total 6 RAMWALLS are planned for the scheme.

Stainless steel components were selected throughout to provide the required 120-year design life.