The BIM concept

BIM, short for Building Information Modelling, is becoming increasingly common in the sector and the reasons for this are many and obvious. Instead of designing in the customary CAD models in which the building is constructed by way of ”dummy” lines, surfaces etc. so-called smart objects are used in BIM models which not only have geometry but also information on quality and sections of time. In this way practically all project-relevant information may be stored in the actual model. An example of such information may be fire classification, steel quality, inspection status and the extent of utilisation for each object. This means many advantages, and a good BIM model ensures quality and makes projection more effective.

Some of the advantages

BIM makes it possible for different consultants to work together with material that is collected and updated, and to carry out ”Clash Detection” in order to avoid clashes between, for instance, ventilation channels and girders, to produce quantity registers and also to establish a clear picture and understanding of the project thanks to excellent visualisation possibilities. All of this and more can be obtained directly from the model in question. A key factor is that a BIM model reflects reality better than work methods previously employed, and it is thus easier to find the best solutions for each project with consideration to all of the disciplines involved.

Concepts such as efficiency and reduced costs are always very central and it is also possible to add such information to the model, thus resulting in a 4D model (time) as well as a 5D model (cost).

Not only during the design stage is this advantageous for BIM; it also applies to all stages in the life cycle of the building. During the entire administration stage the process of finding and updating information on the building is simplified by using BIM.


BTB normally works with BIM and, when a first-class BIM model constitutes the basis for design, we see that quality is enhanced and timescale is reduced. We employ the latest software from Bentley Systems (AECOsim Building Designer V8i among others.), Tekla and Autodesks Revit. We assign a person with technologically advanced skills to each item of software and we strive to stay updated as to the latest solutions available in the market.