Beijing Urban Construction Engineering Company was tasked with the development of the Guangzhou International Sports Arena that was meant to serve the Guangzhou and Pearl River Delta area. The third arena in China, it is designed and constructed according to NBA standards and this comprehensive 65,000m2 18,000-capacity stadium was built to cater for various sports and performing arts functions. Due to its importance, they needed a large, professional and reliable partner and Wavin fit the bill perfectly. The Guangzhou area is notorious for its extreme rainfall and in 2010, some areas saw rainfall intensity levels that are seen once every 300 years while others saw even more extreme rainfall levels seen only once every 500 years – both frequencies and intensities that are beyond imagination! This posed a major challenge when developing the Guangzhou International Sports Arena. Wavin was selected due to its abundant experiences in design, having worked on key international projects such as the Frankfurt Stadium and the Berlin Stadium and due to its expertise in storm water management systems for large industrial and commercial projects. Wavin’s Quickstream Roof Siphonic Drainage System is a key part of its storm water management systems, helping to drain away rainwater quickly and efficiently with its negative pressure system. In fact, it passes tests for managing severe and exceptional rainstorms – allowing the Beijing Urban Construction Engineering Company to continue with construction on a normal schedule through intense rain.