3D CAD

3D CAD refers to computer-aided design (CAD) that uses digital technology to produce 3 dimensional (2D) or volumetric models of built assets, elements or products. The advantages of 3D CAD drawings over 2D CAD lie in the ability to digitally model the building three dimensionally, in a similar way to a physical model, giving a more holistic or real sense of the object as well as any required information. It can also be used to extract standard conventional drawings such as plans, sections and elevations as well as perspectives and orthogonal views. In many cases the digital model can then be exported to other software to model other aspects such as solar, thermal or energy requirements.

BIM (Building Information Modelling) is a digital representation of the physical and functional characteristics of a building or construction project. It is a process that involves creating and using a digital model of a building to design, construct, and manage the building throughout its lifecycle. BIM is often used in conjunction with 3D CAD, but it is a more comprehensive approach to building design and management that involves the creation of a digital model that includes not only the physical aspects of the building, but also the functional and performance characteristics of the building.

[edit] Related articles on Designing buildings

• 2D CAD
• Agent based modelling
• As-built or as-constructed building information model.
• Asset information model AIM.
• Building Information Modelling.
• Parametric modelling.
• Technical drawing.
• Types of building models.
• Types of building information model.
• Types of projection.
• Visualisation.
• Visualisation.

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