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Home > What is BIM? >
The daily use of BIM brings many benefits to everyone involved in construction and real estate.
In construction or renovation, the first player concerned is the client. The client must be the engine and give the initial impetus to start a BIM project.
However, it is preferable that the BIM approach is validated by all project stakeholders. The more players are convinced that they will find advantages there, the more beneficial BIM will be.
Globally, everyone involved in construction and real estate have, to varying degrees, many interests in getting into BIM and then exploiting it on a daily basis.
BIM facilitates the verification, modification, and validation of the building design.
The 3D model allows different project authors to view it from all angles to study the design in all its details, at each stage of the project.
At any time, 3D software makes it possible to produce 2D deliverables that are consistent with each other in real time, whether graphic or non-graphic.
The 3D model also makes it easier to verify compliance with standards. It enables performance analyzes and simulations which allow the building’s consumption to be optimized during construction and use.
The sharing of 3D models produced in the first place by the architect allows stability or technical design offices to base themselves on elements already sketched by the architect to carry out their studies. They can therefore work faster and reduce the risk of errors.
When modifications must be made by the design office, it can very quickly have its proposal approved or commented on by the architect. After validation, sharing the modified 3D model with the architect saves time and again reduces the risk of errors.
The centralization of the information of the 3D model on a CDE (BIM 360 for example) simplifies the coordination of all the techniques as well as the studies before the start of the construction site. This ensures the accuracy of budget estimates and consistency between all documents in the dossier.
Finally, the centralized 3D model also facilitates the delivery of as-built files at the end of the work.
The integration of BIM in this discipline allows an evolution of its practices and contributes to the improvement of the safety and performance of projects. In particular, the use of a digital BIM model allows the controller:
Throughout the project, BIM facilitates the control of the programming, allows to extract 3D models of the data to compare them with the program of requirements.
The client can therefore check and validate the data of the 3D models. This allows the client to follow the project as closely as possible and to intervene when the client considers it necessary.
BIM makes it possible to integrate prices into the 3D model. Quantities can therefore be checked in the beginning phase to avoid unpleasant surprises and respect the budget constraints linked to the construction or renovation project.
If changes need to be made, BIM allows immediate verification of budget implications, to perform real-time budget control (cost control) and verify the impact of any change requests (CRQs or change requests).
The 3D model will be used to control the evolution of construction or renovation costs throughout the site.
As BIM makes it possible to link each object of the 3D model to the task of the planning that corresponds to it, a check of compliance with construction deadlines and adaptations can be done very quickly and at any time. Any delays can thus be identified and potentially avoided.
If modifications need to be made, a verification of the impact on delays can be carried out in real time. The 3D model is used to control the evolution of the construction schedule throughout the site.
During design, exhaustive analysis and simulations can be performed without risk of errors thanks to the centralization of data.
This analysis and the simulations are simpler to perform and can mean both improved results, higher energy performance for the building, as well as a reduction in the building’s consumption once in operation.
BIM makes it possible to anticipate and control risks more effectively.
BIM allows a global vision of safety, integrated as early as possible in the realization of the project. If the risks associated with traffic, storage areas, work at heights, etc. are identified more quickly, their control is all the more effective.
The visual overview of the site before construction is improved.
The assembly of 3D models allows companies to analyze the project before the start of construction, to detect possible problems, omissions, and / or inter-technical conflicts not identified during the design stage.
BIM makes it possible to think about and propose solutions with the design offices before any implementation. The pre-construction vision gives companies the opportunity to analyze the geographical situation more easily. They can easily set up their cranes by checking their radius of action and, likewise, the storage areas to work more efficiently in complete safety.
The 3D model allows companies to make more precise construction decisions.
Interventions by construction teams as well as orders and deliveries are planned at the appropriate times. This leads to a reduction in unnecessary, imprecise orders as well as a reduction in waste.
By providing all the available data relating to all building components, BIM and the as-built model make it possible to manage the building on the basis of reliable information, in particular for:
All the information collected during the studies and the construction site appears in the 3D models. This information is then sorted to constitute an as-built 3D model. It serves as a basis for the owner to take possession and occupancy of the building as well as for its management, operation, upkeep, and maintenance.
Thanks to BIM, the information and plans of the existing situation are reliable. This is not necessarily the case for projects that did not use BIM.
The possible old age of a building to be renovated does not, however, exclude the implementation of BIM. BIM offers technologies, such as point clouds created by 3D scanners, to carry out quickly and reliably the surveys needed to carry out the renovation project.
This point cloud can be used in BIM software to become the reference for architects and design offices.
One of the major constraints in renovation is to avoid “surprises”. BIM, with maximum centralization of data, reduces this risk.
In addition, the 3D visualization associated with the 3D BIM model allows the client to identify which parts of the building remain accessible during the work.