From the starting point of design, all the way to ongoing maintenance in a building, BIM can help reduce wastage. By co-ordinating all elements of the building process in one central model (the key premise of BIM), any updates and changes are easy to view and simple to analyse for problems. With 30% of the cost for building tied up by problems, poor management, inefficiency and error, having a centralised system will reduce many of the issues.
The key areas of waste that BIM can reduce include:
- Reworking and redesign reduction
- Highlighting flaws in design and risk analysis
- Bad communication between supply chain members
- Incorrect maintenance leading to problems
For example, when changes are made to the model, data auto-updates materials quantities so error is minimised, materials are not over- or under-ordered, and efficiency on site is improved, reducing carbon consumption from vehicle movement and material production amongst others.
Building design clashes are highlighted, and can be altered before building begins, meaning reduced reworking and time use on site. Above all, improved communication between parties in relation to building and maintenance can help manage the overall lifetime cost and expectations, all of which reduces carbon consumption.