BIM Infra.dk maturity level 0
This represents the traditional methods which has been well known and well established for generations within the construction industry in Denmark. This maturity level 0 is divided into two sublevels. The first one represents analogue workflows with emphasis on the production of drawings. Different professions share information through the exchange of such drawings.
The second one introduces CAD to support and replace analogue workflows. The result is still 2D drawings produced digitally. Supplementary to analogue drawings digital formats such as Portable Document Format (PDF) and Tagged Image File Format (TIFF) are used for archiving purposes. During construction design and construction implementation 3D models are being used for road and railroad routes and the construction of roads and railroads for extraction of soil volumes. Other professions usually work with 2D drawings. The CAD tools work with 2D drawings and supports from several different professions simultaneously.
BIM Infra.dk maturity level 1
The traditional drawings are supplemented with digital 3D models in proprietary formats which are being used during construction design, implementation, and delivery. The 3D objects and symbols are simple and localized through their graphical location of the model where data are grouped for each profession in layers. The visual representation of the models in the CAD tools is used for coordination and controller purposes. Files are exchanged through a simple web interface.
BIM Infra.dk maturity level 2
At this maturity level 3D models are information models. This means that the underlying information models can capture both spatial, linear, and hierarchical structures containing both geometrical and descriptive information. The information models are well known and support some relevant business tasks whether these are using spatial, linear or hierarchical structures. Tenders predominantly use 3D models rather than 2D drawings as information models. 3D construction objects define geometrically the outer boundaries. Most of the professions involved in construction projects work with 3D objects and the construction process is highly coordinated between professions. Control of volumes are tied to the 3D models. Visual controls are supplemented with automatic geometric clash detection. The construction contractor uses 3D models for quotations as well as controlling the machines doing the construction of roads and railroads. Data are placed on a common server and the exchange of data is carried out through a application or a web interface. This server is also enforcing a set of simple business rules controlling the construction process. Valid, open standards are used when commonly used software products can support these. Proprietary formats are also used in the lack of open standards or support of these. When construction projects are concluded digital models are used supplementary to traditional verification as built.
BIM Infra.dk maturity level 3
During construction design and implementation as well as repair and maintenance 3D models are used and updated. Printed drawings provide a snapshot of the model. This maturity level 3 is divided into two sublevels. The first one utilizes information of interest to the construction process. Information models and data can be shown on mobile devices which have been extracted from a common data server. Data is exchanged through standardized, open BIM formats. Data and processes are validated continuously. Construction objects are used to simulate work flows and to align project plans. As built is documented on construction objects.
The second one means that the construction objects are extended with information about repair and maintenance. BIM data are exchanged and are accessible on mobile devices. A common server environment is used to define and control processes. Model information about production and installation are included and are handed over for repair and maintenance processes.
BIM Infra.dk maturity level 4
All documentation is related to construction objects which are being enriched during all parts of the life cycle of the construction. All documentation is accessible through mobile devices. Models are also enriched with sensors and other data sources such as weather report, autonomous cars et cetera. Data is exposed such that a broad array of stakeholders can retrieve real time information about the construction objects. The BIM models are utilized as part of decision process regarding the Customer’s assets but are also an important part of creating a common digital society.