WEEKS CONSULTING has been appointed to carry out detailed assessments of the condition and stability of earth structures on sections of London Underground's Central Line.
Weeks has been retained by LU subsidiary Infraco BCV, which maintains and upgrades the Bakerloo, Central, Victoria and Waterloo & City underground lines.
Studies will be used to assess the risk associated with earth structures and to detail the need for any works to improve performance and extend the life of the structures to 120 years.
Breaking with LU tradition, Infraco BCV has procured the commission as a single-sourced contract for the first time, employing the consultant to undertake both site investigation and geotechnical assessment.
Previously it appointed a consultant to specify requirements for the site investigation and then let the contract to a site investigation contractor, with the consultant producing a report.
Desk studies and walkover surveys will be carried out by one of several Weeks' engineers experienced to review and analyse the stability of slopes.
The same engineer will compile the desk study, carry out the site inspection, specify the site investigation and undertake the stability analysis, maintaining continuity throughout the project.
Infraco BCV assistant project engineer Chris Tong said: 'By choosing a single-source consultant for the earth structures programme in this manner, we hope to achieve significant savings in both time and cost.
'We are confident that this flagship project will set the standard for other Infracos to follow.'