Xixian Great City Master Plan
AS+GG’s winning master plan for Xixian Great City in Xian, China has an overall project area for the city is 3,817,000 sm or 382 hectares. Approximately 47% of the land will be devoted to farmland conservation, 5% to wetland conservation and restoration, 10% to roads and infrastructure, with the remaining 38% dedicated to urbanized areas.
Within this urbanized area 56.3% of the land will be devoted to development parcels, 20.9% to public green areas and 22.8% to infrastructure and roads and is comprised of 96 parcels averaging 8,450 square-meters. Four of these parcels have been designated as District Parks and another four have been assigned to development currently underway. The remaining 88 parcels are for development of the Xixian Great City’s buildings.
The plan proposes a perimeter building concept for the design of individual parcels, with above-grade parking screened from view by innovative architecture. The concept not only creates strong urban streets but also allows for multiple building configurations on each plot depending on the desired program. The perimeter concept can be applied on both high-density parcels and lower-density parcels, except on Civic buildings, as it is desired that these be special buildings with unique architecture.
In the City Center, a major “Green Bridge” is proposed over the existing train line. The cost of this significant infrastructure investment will be offset by higher density development on adjacent parcels. Further, because this structure is elevated above the ground, these higher-density parcels will use the space under the bridge for the required additional parking.
Perhaps the most important aspect of the Xixian Great City master plan is the extensive sustainable framework that is comprehensively integrated into the physical planning of the City. Eight sustainable themes are presented in the plan, which cover all aspects of life in Xixian and include Sustainable Economics, Sustainable Transportation, Climate and Energy, Sustainable Community, Ecology and Biodiversity, Waste and Water, Sustainable Agriculture, and Sustainable Construction. Contained in these eight themes are 30 specific sustainable goals for achieving a world-class level of environmental performance. AS+GG’s plan suggests that if these 30 goals are realized, Xixian Great City will be regarded as one of the greatest urban achievements of the 21st century.