The site is a unique triangular plot shape, positioned on a hillside overlooking the Yangtze River as it flows towards central Chongqing. The plot is oriented with the triangular tip pointing north towards the river. The tip is composed of a traffic island plaza and pocket park, and stands about 11m in elevation below the highest part of the site at the south. The architectural programs include neighborhood retail and a hotel at the highest part of the site.
△楼梯基座的纸板模型Stair plinth in cardbooard model
The urban condition of Chongqing is predominately hilly which has resulted in very interesting stair and ramp conditions within the history of its urban landscape. BAM focused on creating a stair in the central plaza that not only created a functional connection between the plaza and the mezzanine, but also served as a public space in itself.
Detail model for builder showing relationship of stone to concrete structure.
The stair is designed as a series of built up layers which seem to have been eroded and softened over time. The stacked stone elements extend in areas to create seating nooks, and in some areas they form planters. The stone portion forms a 4m tall plinth which is connected to the mezzanine by another stair system, a more lightweight and precise steel system.
Initially the architects had designed a common steel stair connecting the central plaza to the mezzanine. BAM developed the element into a sculptural amalgamation of planters, benches, and inhabitable nooks. The lower portion of the stair is constructed as 150mm thick granite strata. The upper portion utilizes a lighter steel structure, gently connecting the gallery above with the plinth of granite.
The landscape design creates a sequence of detail elements which activate the central space. Paving and a special crosswalk attract guests from the traffic island towards the pixelated granite water feature.
The pixelated granite water feature emerges from the hillside site as a rock formation, looking interesting both when the fountain pumps are running or dry.
The water feature is designed to be turned off and still look very interesting, as a kind of rock formation emerging from the plaza, partially covered in sedum. Tilting light poles guests up a series of escalators to the main plaza space.
Project: Ronghui Mixed-Use
Location: Ronghui Peninsula Phase IV, Banan District, Chongqing
Design Period: 2013-2015
Construction Period: 2015-2016
Landscape Area: 14,800m2
Scope: Landscape Architecture