Permeable Lattice City is a visionary urban concept proposed by the Singapore-based architecture firm WOHA in 2011. It centres on a megastructure of interconnected towers, which WOHA calls a ‘permeable lattice’, in Singapore’s southern islands.
The lattice repeats a module based on another WOHA project, a sixty-nine-storey Bangkok tower called the Met, to reach a density of 111,111 people in an area of one square kilometre. (For comparison, Singapore’s average density measured just under eight thousand people per square kilometre in 2016.) In renderings of the proposal, surfaces appear covered in a thick layer of vegetation; the horizontal bridges linking the towers are peppered with mature trees and wind turbines. Heavy industry is relegated to the ground level. Inhabitants move throughout the structure via lifts, automated walkways, and other collective transport systems.
Developed in the context of the Vertical Cities Asia competition organised by the National University of Singapore, Permeable Lattice City signals a more developed direction in WOHA’s work on dense forms of living in tropical climates. Although its vertiginous heights are extreme, the project merely intensifies architectural and urban strategies already in use in hot, humid cities: cross ventilation, conscious daylighting, the integration of greenery in high-rises, and a focus on pedestrian circulation.