Design Solution · Building Envelope
Design Solution · Dream about it
Sky-garden voids bringing daylight and air into a deep-plan building.
Large voids and sky gardens are carved into a deep building mass to bring daylight and fresh air to the centre of the plan. Sculpting the volume reduces reliance on artificial light and mechanical ventilation for inner zones.
Sky gardens carved as voids through a deep building mass are a response to a specific problem: deep-plan buildings where inner zones cannot access perimeter daylight or natural ventilation, driving chronic artificial-light and mechanical-cooling dependency. The approach — deliberately removing buildable area to sculpt the volume — has precedent in a number of mixed-use towers, and the passive environmental benefit in principle reduces the mechanical services demand for zones that would otherwise be served by plant alone. This record carries claimed evidence only and no quantified performance data, so the benefit argument rests on design logic rather than measured results. The potential value is real: a well-positioned void can supply daylight factors and air change rates that mechanical systems would otherwise need to replicate, and the amenity value of usable garden space at height is a genuine occupant benefit. The honest trade-off is that the construction cost per square metre of net internal area rises as buildable floor is given away, the structural transfer required to support the remaining building above each void adds complexity and embodied carbon, and natural ventilation performance depends on modelled stack pressures that can underperform if internal gains or occupancy patterns differ from design assumptions. This is a strong concept for the right building type and climate, but the performance case needs CFD and daylight modelling to move from assertion to evidence.
#sky garden #atrium #daylight #deep plan #biophilic