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Inventory modelling 

Inventory modelling 

Inventory models provide reliable and up-to-date initial data for renovation and demolition projects. A 3D information model created at the start of a project helps manage the whole project from the cost calculation to the phasing in the worksite. The inventory model also works as a basis for 3D visualisations, or it can be refined into a digital twin of a building to support maintenance work. 

Initial data model for modernisation or alteration sites

Sometimes, there are no up-to-date drawings or 3D information models that cover the entire renovation history of existing buildings. Through laser scanning and other imaging techniques, point cloud materials can be compiled for modernisation and alteration sites. Based on the point cloud, an inventory model, or initial data model, can be created for the site, which will provide information on the materials’ dimensions, amounts and locations. 

For our clients, inventory modelling is an easy and efficient way of obtaining reliable and accurate initial data of an existing building. The preparation of an inventory model always starts with the definition of shared goals. This way, we can customise the model’s content to suit the intended purpose. When the model’s level of detail is sufficient, the inventory model will not contain anything unnecessary, but only relevant data for the project planners and other operators.

Quality of the inventory model

For smooth progress and successful results of a construction project, the quality of the inventory model is directly proportional to the quality of the measurement data and the expertise of the inventory model’s creator. This is why it is of the utmost importance to ensure that inventory measurements and inventory modelling have been done appropriately. When these are ensured, the model’s level of detail and information content will be as agreed, and the model will serve the project goals in the best possible way. All matters relevant to the project, such as hidden structures that affect the dimensioning, will have been taken into consideration accurately. 

Our experts will ensure that the inventory model complies with the common BIM requirements and is consistent with the information model format used by the design team. We will also ensure that the inventory model has been built using the correct information content. This way, it will function as an excellent basis for the project’s combined model and be easily accessible to different operators. 

Application of inventory modelling

The inventory model provides initial data for the project designers, above all. The data from the inventory model regarding the scope, mass and amounts can also be used for cost calculations and phasing the work in the construction site. The model also supports the component suppliers in calculating, planning and dimensioning their products. The 3D visualisations created based on the inventory model illustrate all stages of the project for the whole team. 

If the inventory model is refined and updated even after the project has been completed, the 3D model will become the digital twin of the building to support its maintenance. Based on the inventory model, augmented reality (AR) or virtual reality (VR) environments can be created to assist in the user-centric design of hospital projects, for example. With the elaborate virtual model, the functionality of the facilities and multiple options of implementing them can be tested cost-efficiently. 

We have also developed an inventory tool for demolition sites. The inventory twin helps control the demolition costs early on in a renovation or demolition project. The smart 3D model will open the project data transparently to various operators, and the results of the detrimental material survey attached to the 3D model improve risk management. In demolition planning, the inventory twin also supports circular economy and the utilisation of materials and parts that can be reused. 

Digital services in the properties

Digital services enhance the planning and implementation of construction projects and the information flow into property maintenance. We offer modern automation and robotics technologies and simulation and optimisation tools. Decision-making can be supported through visual 3D information models, virtual environments, and carbon footprint calculation for buildings, the benefits of which can be experienced throughout the building’s lifecycle.


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