Consolidation Case Study

Drainage Layer, Pozidrain G, Magna Park, Lutterworth, UK

Project Information

Client:Gazeley (GLP) Ltd
Contractor:Mick George Contracting Ltd
Consultant:Hydrock Consultants Ltd
Product:Pozidrain G4SD drainage geocomposite
Quantity400,000m2
Benefits:- High flow capacity in both directions
- Accelerated consolidation
- Large rolls for fast installation
- Saving 80,000m3 of drainage stone
- Substantial 86% CO2 saving


Project Description

Magna Park (Lutterworth) provides a high-quality business environment specifically focused on logistics and distribution. Covering over 550 acres, it is bounded by the M1, M6 and M69 motorways making it the first choice for logistics due to its strategic position in the centre of the country.

Home to 29 different occupiers, with 8.3 million sq ft (771,155 sq m) of sustainable logistics floor space in 32 buildings, Magna Park Lutterworth is Gazeley’s flagship distribution park. Since the development of the Park in early 1988, Magna Park’s continuous growth has contributed significantly to the development of the local economy and infrastructure.

Gazeley appointed Hydrock Consultants to design Magna Park South enabling works and commissioned Mick George to complete all required earthworks operations on this ground breaking development widely regarded as Europe’s premier logistics location.

The Challenge

A substantial amount of earthworks and ground improvement was required to enable construction of the distribution centres. The challenge was to accelerate consolidation, reduce construction time and achieve carbon savings by eliminating the use of drainage stone. An innovative and cost effective design solution was needed to enable fast consolidation. A large proportion of this development was constructed on weak ground where it was necessary to first drain the sub-formation using prefabricated vertical drains (PVDs). The geosynthetic solution required a high performance geocomposite drainage layer to discharge the water from the PVDs.

The Solution

The designer Hydrock, working with ABG, developed a geosynthetic solution that would provide adequate drainage to ensure consolidation of the sub-formation and the embankment fill.

The Pozidrain G geocomposite drainage layer was used to provide drainage above the 150mm Class 6C platform and PVDs at a 1.5m grid spacing. Pozidrain was also installed within the embankment fill at 3m vertical spacing to provide accelerated consolidation.

The use of Pozidran G geocomposite instead of drainage stone in this design resulted in 86% or 2,998 tons of CO2 saving.


ABG Pozidrain G Drainage Geocomposite for landfill applications

ABG Pozidrain G Geocomposite specifically designed for consolidation applications

Embankment fill installation on top of Pozidrain G drainage geocompositeEmbankment fill installation on top of Pozidrain G drainage geocomposite
Multiple Pozidrain layers ensured accelerated embankment fill and sub-formation consolidationMultiple Pozidrain layers ensured accelerated embankment fill and sub-formation consolidation
Magna Park LutterworthMagna Park Lutterworth
Multiple Pozidrain layers ensured accelerated embankment fill and sub-formation consolidationMultiple Pozidrain layers ensured accelerated embankment fill and sub-formation consolidation

The ABG Service

ABG provided technical advice and design assistance. On this large project it was important to schedule deliveries to ensure efficient installation and meet the required completion deadline.

Contact ABG today to discuss your consolidation project specific requirements and discover how ABG past experience and innovative products can help on your project.

Pozidrain G Geocomposite

Geocomposite for landfill cap drainage, gas-venting, ground water drainage and leachate management. Particularly useful on steep slopes where its core structure offers enhanced frictional performance whilst providing protection to the lining system.

more...

Pozidrain G Geocomposite
 

Products

Pozidrain G Geocomposite

Geocomposite for landfill cap drainage, gas-venting, ground water drainage and leachate management. Particularly useful on steep slopes where its core structure offers enhanced frictional performance whilst providing protection to the lining system.

more...

Pozidrain G Geocomposite
 

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