Sustainable Drainage Systems: Case Study

GEOlightTM storm water management package offered by Sustainable Drainage Systems provided the most cost effective solution.

Smith's Gloucester, contracted to Brittania, needed a 969m3 storm water management system for a new Tesco distribution centre in Magor, South Wales.

Two of the key issues were speed of installation, and loading capacity as the system needed to be located underneath the HGV service yard.

It was decided by the design engineer and the contractor that the GEOlightTM storm water management package offered by Sustainable Drainage Systems provided the most cost effective solution in terms of performance, buildability and cost.

GEOlightTM, our low-weight, modular, honeycombed structure, made from 100% recycled PVC, offers 95% water retention void, fewer distribution pipes and manholes, and also reduced excavation over other systems.

During installation it emerged that a 55 tonne piling rig had to be trafficked over the GEOlightTM system.

This was achieved with no disruption to the installation or programme of works on site.

Project: Attenuation tank installation, Tesco Distribution Centre, Magor, South Wales.

Product Profile: GEOlight 400.969m3 Location: Tesco Distribution Centre, Magor, South Wales.

Type of job: Full installation.

Date Completed: Tuesday 31st January.

Summary: The installation consisted on two attenuation tanks of roughly 600m3 and 300m3.

A perforated pipe ran off centre through the modular system.

Dimensions of tank 1 was length ~ 105metres, Width 11.5 metres, height 0.5 metres= 600m3.

Tank 2 length 53metres, Width 11.5 metres, height 0.5 metres=300m3.

Also fitted as part of the installation was pipework, membranes, geotextiles, air ventilation system, top-hat system and aggregate filling.

Contractor: Smiths Gloucester Construction Limited contracted to Brittannia .

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