Incremental Production of Urban Public Green Space: A ‘Spiral Space’ Building Typology

Abstract

This paper addresses a challenging global problem, insufficient accessible urban public green space, based on building typology. Offering sufficient public green spaces and maintaining the equalities of citizens’ accessibility in high-intensity urban cities has been increasingly challenging. Thus, providing adequate and accessible green public spaces by 2030 is a sub-goal of SDGs No. 11. Solving this urban problem is commonly considered the responsibility of urban planning; however, the potential of buildings is scarcely discussed in academia. Luckily, in the industry, many top architecture firms (studios) have tapped the particular potential of buildings via design practice. This practice-led research aims to understand the efforts made by industrial circles. Based on the fieldwork worldwide, this study proposes a ‘spiral space’ building typology to work as a conceptual framework for this emerging field. The key benefit of this building typology—incremental production of public green spaces—is qualitatively verified, and the good flexibility and international acceptance of this building typology are demonstrated based on global cases. This work could serve as a basis for future research on how buildings could play a greater role in supporting urban sustainability, such as enhancing the residents’ accessibility to public green space in metropolises. In addition, the building typology and corresponding design strategies discussed herein could also serve as references for future design practice for architects.