International Award

For a contract undertaken outside the UK. The International Award can be either a domestic, commercial or private contract, interior or exterior. This is a paperwork submission only. No judging visits are undertaken.

BEIJING TSINGHUA TONGHENG URBAN PLANNING AND DESIGN INSTITUTE

PRINCIPAL AWard WINNER 2019

WETLAND PARADISE ON A GIANT ROOFTOP – THE WETLAND PARK IN HUAIFANG RECLAIMED-WATER PLANT

Wetland park of Huaifang reclaimed-water plant is the largest rooftop wetland park in China and also the first experimental design combining the wetland landscape with underground water treatment facilities. The site occupies 16 hectares, 13 of which are on the rooftop of the largest fully enclosed underground Huaifang reclaimed-water facility in China.

The design uses the reclaimed water to create an artificial wetland on top of the treatment plant, which purifies the water before it drains into the out-park drainage system of Beijing. The whole wetland park has become part of the water processing stage. The design simulates the natural community structure, creating 103 different habitats. Terraced landforms have been constructed with net-mesh reinforced stone gabion retaining walls and many different types of vegetation to incorporate the floodwater management system. A new form of lightweight fabricated steel-structure walkway was designed for the park, stone-gabion retaining wall and some other lightweight construction materials for the low-load roof, and an educational cabin and wooden walkway constructed.

The wetland park has brought social and ecological benefits to the city and is a paradise for animals and plants, demonstrating the harmonious co-existence of humans and nature.