Plumstead Maintenance Facility Crossrail C695
Project Scope and Delivery
A new maintenance facility was required to be constructed east of Plumstead Railway Station, London, as part of the Crossrail project, including a maintenance building, accommodation building, undercover stores and associated external works such as car parking and lay
down and loading bays.
A baseline embodied carbon assessment was undertaken using Crossrail RIBA stage F Bill of Quantities as the data source for materials types and quantities. The purpose of this assessment was to enable the capital carbon of the designs to be known and to provide a framework to identify potential opportunities for reduction during construction and operation.
This data was then inputted in to the RSSB Rail Carbon Tool. Each material was identified in the tools material library and the tool then applied a carbon factor to calculate a figure in kilograms of Carbon Dioxide Equivalent (CO2e). When carrying out this process, assumptions on material specifications were made when necessary to ensure consistency and accuracy of the assessment.
The assessment, which was undertaken using the principles of the PAS 2080:2016 BSI Standard for Carbon Management in Infrastructure, calculated the embodied carbon and associated costs associated with the construction materials in order for the design team to take embodied carbon of materials into account when specifying and recommending materials.
Although the carbon assessment was undertaken as a baselining exercise after the proposed design had been finalised, value was still added to the project. High impact carbon materials were identified and it was calculated that substituting general concrete and steel with ground granulated blast furnace slag or pulverised fuel ash concrete and recycled steel respectively, could reduce the total embodied carbon of the Plumstead Maintenance Facility by 30%.