4.4: Exercise III- circular energy transition

The planned energy transition in the Netherlands means that most buildings have to undergo an expensive renovation to meet new standards. To reduce costs, one can adopt a circular approach to both components or materials released from existing buildings and the new components and subsystems that will be added to the buildings. Organize the following tasks for a typical Dutch single-family house:

• Document the existing situation in a model appropriate for renovation, i.e. including realization phases, distinction between existing and planned, what should remain and what should be removed
• Identify in the model components and materials that should be extracted (e.g. radiators: the house will have underfloor heating), explaining how identification takes place (preferably automatically) in the model
• Estimate the expected circularity form for these components and materials (recycle, remanufacture, repurpose, re-use etc.), explaining which factors play a role (weathering, wear, interfacing with other elements etc.) and how these factors can be detected in the model
• Identify which elements should be upgraded and specify what this entails in the model (paying attention to phasing and element type changes)
• Specify how new elements (for the renovation) should be added to the model to support the above in the remaining lifecycle of the house
• Make a time schedule for the renovation in 4D BIM

---