On the central section all tunnels, portals (transition structures between surface and tunnel) and shafts (vertical structures linking the tunnel to the surface) have been assessed using the Civil Engineering Environmental Quality (CEEQUAL) methodology. Crossrail's aim was to achieve an Excellent rating when the whole project is assessed upon completion, and on the central section all the projects have achieved this at both the Client and Interim Design and Construction stages.
One of the key challenges found on the central section was the alignment of design packages with the procurement and construction strategy. The CEEQUAL learning legacy paper focuses on the key issues and provides suggestions on how the process can be simplified. It also addresses the issue of the value of CEEQUAL in driving best practice and overall improvement on a high profile major infrastructure project that is required to deliver high levels of performance through its minimum environmental requirements and rigorous consenting process. Several examples of the project awards for both the central and surface works can be found in the documents link below to the CEEQUAL/BRE website.
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