The Groundsman

June 2012

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the Groundsman June 2012 FEATURE 27 …While ABG supplied innovative geosynthetic products for some training pitches Integrated within the Athletes Village of the London Olympics are a series of high performance, high specification training pitches designed for the athletes to use during the duration the Games and to then form part of the Games legacy by providing sporting facilities for the local community. Installed by Spadeoak for main contractor Osbourne Construction, the pitches offer the latest generation synthetic facilities for hockey, tennis and MUGA applications. Importantly, the delivery of world-class playing surfaces crucially also depends on 'what happens underneath' in terms of construction as much as it does on 'what goes on at the surface'. UK-based manufacturer ABG specified and supplied a range of innovative geosynthetic products for the project, including the market leading Pozidrain drainage composite, Abgrid geogrids and Terrex geotextiles. The use of geogrids is well proven and in this instance they were used as a cost- effective method for stabilising and strengthening areas of soft soils prior to the installation and construction of the pitches. Where the use of geosynthetics has really excelled on this project is in pitch drainage, where ABG's Pozidrain Strip system has been installed. Pozidrain Strip drainage geocomposite consists of strips of a three-dimensional cuspated HDPE drainage core sandwiched between two layers of a geotextile sheet; it offers a dual function acting as both the drainage medium, as a direct replacement to the pipes and gravel, as well as a separator layer between sub- grade and materials used in the pitch build up, preventing mixing of the two layers. This dual functionality offered a number of key advantages on the project, saving both time and money. Drainage composites are supplied in large, wide width rolls making installation as quick and simple as unrolling the product before commencing with the pitch construction over the top. This saves the excavation of the trenches, the removal of the excavated materials, the importation of the gravel fill and the cost of purchasing and installing but, most importantly, also saves time - crucial when delivering to a deadline for the Olympics. www.abgltd.com

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