Client: Travis Perkins Group
Product: Ecobloc Maxx, Alphaline LLDPE Liner, Terrex Protection Geotextile
- 96% void
- Timed delivery to cause least disruption to site
- Fast installation in tight working space, with no disruption to main contract programme
- Skilled installers able to work round existing services
This tight urban site on Beddington Lane in Croydon, has been developed by Travis Perkins Group as a new branch to service the Croydon area. To make the scheme viable as much of the site as possible had to be made available for commercial activity, while at the same time providing capacity to manage storm water from significant rainfall events.
ABG Geosynthetics had designed the SuDS tanks using a high volume modular system EcoBloc Max in line with the planning attenuation limits set by the local planning authority.
The area selected for the SuDS tank was in made ground and Planning consent was dependant on surface water collection being separated from ground water as the site was being developed in an industrial area near to the Beddington Sewage Works. The excavation for the SuDS tank was in made ground and required a well prepared level bedding area to receive the tank. The position of the SuDS tank was in front of the main loading bays for the depot where regular HGV traffic will be working. Works plant will also be loading the area during the construction period. The design therefore needed a professionally installed high strength tank unit properly aligned, bedded and sealed liner using a qualified team of installers.
The lack of available space on site meant delivery and installation needed to keep to a strict timetable to minimise space taken up by construction materials. There were a number of services to work around, and the installation needed to be kept to a tight schedule to fit with other operations from the main contractor.
ABG put forward Subcontractor Geogreen to provide an installation team with qualified membrane installers to ensure the integrity of the installation. Geogreen coordinated material deliveries to fit site restrictions and completed the installation over two separate day visits.
sand bedding was placed to line and level with careful fitting of the components illustrated above to fit the tight excavation. The knowledge of Geogreen site teams meant no hassle for Hobarts who were able to continue work around the area and therefore not disrupt their works programme.