Resumen
An increasing number of urban areas are failing to provide citizens with an adequate amount and quality of public open space. In this regard, Hong Kong epitomizes an extreme condition, supplying only 2.7-2.8 m2 of open space per capita. The burden of this scarcity falls most heavily on economically disadvantaged social groups, such as migrant domestic workers. In this context, grade separation pedestrian systems that were originally designed for mobility purposes, become the occasion for sociability-oriented stationary uses. This study finds that the density of stationary activities in a typical elevated pedestrian network is as high as 1.2 person/m2.