BIM has many benefits including: greater collaboration among stakeholders, improving project performance, fewer problems constructability on the site and cost efficiency. However, the implementation of BIM requires a successful definition scope management and delivery, as well as the flow of information between the MEP (M & E) consultant MEP (M & E) contractor, various subcontractors and manufacturers store. However, BIM can create the overlapping range (and therefore the cost and time for the project) between MEP (M & E) consultants, contractors and other stakeholders downstream.
In the traditional system, where the 2D design data is received, the MEP contractor would be responsible for the coordination of services and conflict detection. He / she overlap 2D drawings of each of the services (HVAC, electrical and plumbing) and perform a detailed coordination exercise - usually using 3D tools or using BIM tools. The end result is a model that is coordinated space which can then be used to create the installation plan and after assembly / installation.
The traditional approach (2D drawing deliveries) do not require design consultants to think constructability and spatial coordination. However, the process requires BIM MEP (M & E) BIM consultants to create 3D models without MEP confrontation before creating 2D drawings for entrepreneurs to use. As the consultant also provides a BIM model (which is increasingly free collision and coordinated to some degree), he / she is in place to carry out a part of the scope traditionally assumed by the contractors. However, and more importantly, the consultant's MEP model are not always coordinated in the way services are installed or be profitable for the MEP contractor.
In short, the consultant 3D model can be spatially coordinated but not suitable for installation.
Without updating the BIM model to its own needs assembly and installation / regulations, the contractor will not have constructability problems immediately. This additional work by the contractor is indeed repeating the modeling exercise (and the exercise of design) and is the key area of overlap field and time and therefore additional costs that will affect schedules profitability and project.
To many observers, as a defeat overlap in order to employ methods MEP (M & E) BIM. Firstly, the consultant can create a model of BIM, but can not focus on creating a free template coordinated or collide. Second, it can create a 2D design as was traditional non-BIM. This will also create BIM models by the contractor and therefore the need for BIM project will still be served. This method allows the entrepreneur to establish a coordinated using BIM specialist coordination of MEP companies if necessary.
The third approach is to design consultants to employ a specialized MEP coordination company that understands and 'coordination for the installation' skills. By using these skills in the design phase, the output is more likely to be useful to the contractor whose role can then be to refine the model and create drawings.
By managing CRM projects using one of the methods under which overlap will be reduced and the projects will be managed and delivered during the pre-construction phase and BIM effectively. The end result will be a gain for customers and a more positive and effective use of BIM to achieve MEP BIM projects.
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