LECA® LWA SPECIFIED FOR THE CONTINUATION OF THE EDINBURGH TRAM DEVELOPMENT
Over 11,000m3 of LECA® LWA has been specified for the continuation of the existing Edinburgh Tram Network, which has been developed by the main contractor Sacyr Farrans Neopul (SFN) on behalf of the City of Edinburgh Council. The project is due for completion in 2023.
The aim of the Tram development is to create a sustainable solution for clean, green and accessible public transport, significantly reducing the impact on air quality through the reduction in vehicle congestion, with a move towards a net zero carbon emission future for Edinburgh. In addition, it is expected to deliver significant social and economic benefit to the immediate area and to Edinburgh as a whole.
For this development, LECA® LWA was specified as a lightweight solution to provide a robust foundation support for the track bed between two existing retaining walls whilst not applying excessive pressure to the ground and adjacent retaining walls, it reaches up to 4m high over variable ground conditions, including loose sand and soft clay/ silt. The LECA® LWA has allowed the project to move forward whilst maintaining the existing structures previously installed by others and minimising the ground consolidation.
Based on a historical Tram Project in Murrayfield, where LECA® LWA was successfully applied to provide lightweight ground support. The specific compaction rates of LECA® LWA and the reduction in bearing pressure at base provided a key property for the specification of the material, with the design specification requiring a Type 1 fill to be placed over the LECA® LWA.
11,000m3 of LECA® LWA was delivered by ship directly into the Port of Leith in Edinburgh - helping to minimise the carbon footprint of delivery – reducing the number of trucks required to travel and deliver onto the project site in Edinburgh.
Amount of material: 11,000m3 of LECA®LWA (10-20mm)
Interesting Fact: The specific compaction rates of LECA® LWA and the reduction in bearing pressure at base provided a key property for the specification of the material
Delivery Method: Walking Floor
Main Contractor: Sacyr Farrans Neopul (SFN) on behalf of the City of Edinburgh Council