Building information modelling
BIM is a process involving the generation and management of digital representations of physical and functional characteristics of a facility. The resulting building information models become shared knowledge resources to support decision-making about a facility from earliest conceptual stages, through design and construction, through its operational life and eventual demolition.
Traditional building design was largely reliant upon two-dimensional drawings (plans, elevations, sections, etc.). Building information modeling extends this beyond 3-D, augmenting the three primary spatial dimensions (width, height and depth) with time as the fourth dimension and cost as the fifth. BIM therefore covers more than just geometry. It also covers spatial relationships, light analysis, geographic information, and quantities and properties of building components (for example manufacturers’ details).
BIM involves representing a design as combinations of “objects” – vague and undefined, generic or product-specific, solid shapes or void-space oriented (like the shape of a room), that carry their geometry, relations and attributes. BIM design tools allow extraction of different views from a building model for drawing production and other uses. These different views are automatically consistent, being based on a single definition of each object instance. BIM software also defines objects parametrically; that is, the objects are defined as parameters and relations to other objects, so that if a related object is amended, dependent ones will automatically also change. Each model element can carry attributes for selecting and ordering them automatically, providing cost estimates as well as material tracking and ordering. For the professionals involved in a project, BIM enables a virtual information model to be handed from the design team (architects, surveyors, civil, structural and building services engineers, etc.) to the main contractor and subcontractors and then on to the owner/operator; each professional adds discipline-specific data to the single shared model. This reduces information losses that traditionally occurred when a new team takes ‘ownership’ of the project, and provides more extensive information to owners of complex structures.
BIM Software Blog
Global design and BIM software developer Vectorworks, Inc. has announced their partnership with Modelo, creators of the software plug-in of the same name, which is one of the fastest real-time, web-based 3D model communication tool in the AEC industry. Modelo allows...read more
Stewart Green, Associate Director at DP Architects explains… My firm, DP Architects, has specialised in high-quality residential and commercial design for over two decades. Our team used the same software platform for many years, but the upcoming Building...read more
Level 2 BIM is clearly today’s main priority but Jason Ruddle thinks that work processes need to evolve to keep in-step and the industry needs to get to grips with the training challenge presented by digital construction. This means embracing new technology and...read more
Sefaira’s Performance Analysis Software Expands Trimble’s Design-Build-Operate Portfolio Trimble has announced the acquisition of London/New York based Sefaira Ltd., a leading developer of cloud-based software for the design of sustainable and high-performance...read more
Trimble has announced the acquisition of London/New York based Sefaira Ltd., a leading developer of cloud-based software for the design of sustainable and high-performance buildings. The acquisition of Sefaira expands Trimble’s Design-Build-Operate (DBO) portfolio to...read more
David Chapell is Head of Cost Management at Clarkson Alliance. When he joined the team he was delighted to discover that Managing Director, Graham Clarkson, was committed to putting BIM at the heart of the business. When David came on board to grow cost management as...read more