Aarsleff Ground Engineering completed the multidisciplinary foundations package at Saxton Gardens, on behalf of main client Leeds City Council for Vital Energi.
The foundation works formed part of a wide-scale scheme to create the Leeds PIPES district heating network for the city that would see the heat created by the council’s Recycling and Energy Recovery Facility (RERF) in East Leeds being used to provide
hot water and heating for households and businesses through a network of underground pipes.
Vital (www.vitalenergi.co.uk) were awarded the design and build contract, and subsequently awarded Aarsleff Ground Engineering the driven steel tube piling, mini bored piling, king post wall and drilling and grouting works required for the network’s backup equipment at Saxton Gardens.
Specifically, Aarsleff installed 44No. driven steel tube piles, 16 No. mini bored piles installed inside a 4.5m Height restriction, 45lin/m of King Post Wall to a retained height of 1.5m, and drilled 60No holes to 18m past the existing coal seam & filled with grout.
Overseeing the project, Aarsleff’s Chris Purvis said
“We utilised our JS130 rig to drill 72No. vertical and inclined holes. Due to many areas of the site being close to the foundations of existing building walls and underground services, it was necessary to work with extreme caution and assess all risks prior to drilling. Having assessed detailed site plans, made suitable and sufficient assessment of the risks posed by those hazards and co-operated with principle contractor Vital Energi, we made sure any rules or agreed methods of working were strictly adhered to.”
Heralded as the next sustainable model for urban development, the scheme is expected to be completed by 2020. Should the scheme prove successful it could be expanded to other areas of the city.