Architecture, Building and Structure Design Stacko 3 Generation House by Renaissance Planners & Designers Pte Ltd The project achieves its crescendo with a second void above the double-winder staircase, bringing in warmth to the house when necessary yet ensuing stack ventilation by means of direct vertical pressure. With a reorganized private interior space, circulation between rooms is linked via an ambulatory sky-bridge adjacent to the aforementioned void, establishing a stimulatory environment suited for the family.