Designing for adaptation
If longevity becomes a key sustainability objective, reframing design approaches around building adaptation and reuse is required.
Designing in layers (with different replacement strategies for building elements, covering site, structure, façade, services, layout and fitout) will build in circular thinking.
Adaptability includes accommodating different tenancies and uses over time. Through the building itself, this may be flexibility in slab-to-slab heights, loading capacity, structural grids, or vibration response factors. Central plant and services distribution design, allowing for future modifications and expansion, can accommodate unforeseen needs and improve a building’s usable life before requiring refurbishment. MEP systems that isolate areas provide resilience and minimise disruption, cost and structural adaptation as uses change.
These may increase capital expenditure and embodied carbon initially but can generate substantial environmental benefits over a building's lifespan.