- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 07 Feb 2017
Design technology has developed greatly in recent years, from traditional 2D hand-drafting processes to computer aided design (CAD), building information modeling (BIM), and augmented and virtual reality.
Model-based design is a process that involves creating digital representations systems to help with design development and decision-making. It allows rapid analysis and comparison of design alternatives, co-ordination of and collaboration between team members, clear communication and visualisation of information, easy alteration, clash avoidance and so on.
As the design progresses, the model may develop and the level of detail increase, including, first, objects based on generic representations, and then specific objects with specifications and method statements attached along with information about space allocation for operation, access,maintenance, installation, replacement and so on.
Ultimately, as the contractor and their supply chain take over development of the model, it may be described as a virtual construction model (VCM), containing all the information necessary to allow the objects in the model to be manufactured, installed or constructed.
- Level 0: Unmanaged CAD (Computer Aided Design).
- Level 1: Managed CAD in 2D or 3D.
- Level 2: Managed 3D environment with data attached, but created in separate discipline models.
- Level 3: Single, online, project model with construction sequencing, cost and lifecycle management information.
Parametric modelling (or parametric design) is the creation of a digital model based on a series of pre-programmed rules or algorithms known as 'parameters'. That is, the model, or elements of it are generated automatically by internal logic arguments rather than by being manually manipulated. For example, a rule might be created to ensure that walls must start at floor level and reach the underside of the ceiling. Then if the floor to ceiling height is changed, the walls will automatically adjust to suit.
 Find out more
 Related articles on Designing Buildings Wiki
- Architectural communication.
- Asset information model AIM.
- Common data environment.
- Computer aided design CAD.
- Computer aided manufacturing.
- Concept drawing.
- Design coordination.
- Design intent model.
- Design management for construction projects.
- Design programme.
- Manual drafting techniques.
- Samples and mock-ups.
- Structural modeling and analysis.
Featured articles and news
28 leading bodies set out their vision for the future.
Chancellor announces latest Winter Support packages.
Tapping technology to boost infrastructure and create jobs.
4 ways to ensure certificates are valid.
White elephant construction projects.
How Paul Williams bent over backwards to overcome racial barriers.
Organisation revises actions around dealing with COVID-19.
CIOB, NFCC, RIBA, RICS call for changes ahead of Building Safety Bill.
Developments in the Future Homes Standard.
An American chimney feature with a colourful past.
Homes based on need, not ability to pay.
Historic England adds 216 entries to the 'at risk' register.
Will cycling and walking provisions be preserved?
Assembly point levels range from relative to ultimate.