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Daegu World Cup 2002 Stadium
Location: Korea
Architect / Consulting Engineer: W S Atkins
Main Contractor: Samsung Corporation
This visionary stadium, one of the venues for the 2002 Football World Cup, incorporates a state–of-the art syphonic rainwater management system from Fullflow Group Limited. With rain and snow as part of the climate conditions in that area of South Korea it was important to provide a fast, efficient and reliable system.
Working in conjunction with design consultants WS Atkins, contractors Samsung and architects Idea Image Institute, Fullflow set about the task of designing a rainwater management system to complement the two piece fabric membrane and steel framed roof. The galvanised steel pipe work, chosen for its ability to cope easily with negative pressures was sourced locally by Samsung, Fullflow’s unique design software – Primacalc® - is independently certified to accurately calculate flow rates to within one percent of the actual installed system in a range of plastic and metallic materials including High Density Polyethylene, Copper, Aluminium, Cast Iron and Galvanised Steel as used in this project.
The Primacalc® analytical software allows designers to reliably and accurately calculate an optimum solution based on project specific information such as rainfall intensity, geographical location and building life. This allows clients the confidence that a Fullflow designed rainwater management system will offer complete protection from water ingress under the specified design parameters.
It was calculated that given the climatic conditions at Daegu and the size of the roof, a total of twenty six self-priming syphonic outlets and just eight downpipes would be required to drain the vast roof area. Project management was co-ordinated by Fullflow Group Limited with outlets being shipped to site to meet the locally sourced steel pipework for installation by the contractor, on-site supervision was provided by Fullflow throughout to ensure correct assembly and fitting.
The junctions between each arched section of the membrane roof form troughs, which allow rainwater to flow away from the high point of the roof to a collection gutter located on the outside edge of the roof structure. Primaflow® Self-priming Syphonic rainwater outlets are located in boxed receivers within the collection gutter immediately beneath the discharge points of the troughs. This allows the majority of the runoff from the roof to flow directly into the rainwater outlets. The water is then transferred via a collection main to just eight downpipes discharging into underground catchpits. This system allowed pipe diameters to be kept to a minimum, much smaller than would be required by an alternative system.
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