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Open BIM technology in CYPE programs
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Using Open BIM technology a collaborative, multi-disciplinary and multi-user workflow can be implanted, which allows projects to be developed in an open, coordinated and simultaneous manner amongst the various project designers or agents that intervene in the project.

The work methodology proposed by CYPE is different to workflow proposals based on previously existing BIM tools available on the market. This webpage displays the workflow proposed by CYPE, in which the contents of the BIM project are not linked to any specific application or program.

Open BIM technology as a project tool

Open BIM technology as a project tool

Using Open BIM technology a collaborative, multi-disciplinary and multi-user workflow can be implanted, which allows projects to be developed in an open, coordinated and simultaneous manner amongst the various project designers or agents that intervene in the project. In this workflow, proposed by CYPE, the project is solved in an iterative manner using the progressive solving of its various aspects or components.

This way of working is different to that proposed in the workflows based on BIM tools that previously existed in the market. Using these tools, the project is carried out based on the adopted solutions, in such a way that the work of the project designers who have to make project decisions based on loose and specific analysis models solved using specific applications.

The main property of Open BIM technology and, we believe, its main advantage is that it is based on open and public standard interchange formats (IFC), so that the contents of the BIM project are not linked to any specific application or program. Furthermore, thanks to the use of these interchange formats, the specific applications used to solve the various aspects of a project (structure, installations, etc.) do not have to be linked to a single software manufacturer.

The stages or actions contemplated in the workflow that is proposed to develop a project are:

  • Beginning of the BIM project
  • Use of specialised applications to solve the project
  • BIM model update in specialised applications
  • Export of IFC files to the BIM project
  • Consolidation of the BIM model

Beginning of the BIM project

Based on an IFC file generated by IFC BUILDER or another modelling software (it does not necessarily have to be exclusively geometrical). To begin the BIM project, an empty directory has to be selected, since all the information that is deposited in the directory, as the project advances, will be interpreted as being part of the same BIM project.

Use of specialised applications to solve the project

Use of specialised applications to solve the project

All the applications can load the BIM model and work on it. Users must bear in mind that, some applications, can begin the development of the project without the need to have to be linked to a BIM model and create the link later on. For example, with CYPELEC REBT, users can begin the design of the electrical installation to then link it with a BIM model, later on when it is available, to introduce the floor plans on the model.

It is important to take into account that the analysis models of the various specialised applications are not loaded onto the shared or public BIM model. For example, in the case of CYPETHERM LOADS, the job or project of the program belongs to the designer that has performed the thermal load analysis, and no other project designer has access to the data file of CYPETHERM LOADS. This proposed workflow property is very important when assigning the responsibilities corresponding to all the technical staff that intervenes in the project.

BIM model update in specialised applications

Once the link with the BIM model has been created with the specialised applications, and with having begun the various projects, changes can be carried out on the model. The way in which CYPE applications react to the changes in the model to which they have been linked is one of the distinguishing and advanced properties of the Open BIM workflow.

In the proposed workflow, the specialised applications do not import a BIM model, since an import would imply that each time a change is carried out in the model, the work would have to be redone from the start. CYPE programs, which have been designed for this, UPDATE BIM models in such a way that if there are any changes in the original model, only work that has been carried out which remains obsolete after these changes is lost, and always with the user’s supervision, using the available update options.

Export of IFC files to the BIM project

As has been explained previously, the design models which manage the various specialised applications belong to the project designer that has created them and are not shared in the BIM project (they belong to the private field of each user). However, and this is a very important property of our applications, all of them can export an IFC file with information of each application. This way, the BIM project, after taking on this information, is progressively enriched and completed.

The information generated by the various applications can be, generally, of two types: it can be linked to entities that have been introduced previously in the BIM project (e.g. thermal loads generated by CYPETHERM LOADS which are linked to the precincts of the BIM project), or can consist of new project entities (e.g. the radiators or radiant floor circuits created in CYPETHERM HVAC).

Consolidation of the BIM model

Therefore, as the project is developed, the information corresponding to the BIM model increases using the IFC files generated by the specialised files. This is what we refer to as consolidation of the BIM model.

This, in reality, is very simple. The only thing to bear in mind is that the BIM model is not only the original IFC file, but it also consists of another file and of all the other files generated by the various specialised applications. This way, the BIM model which users work on includes all the consolidated information that has been generated amongst the specific applications that have been used.

This proposed workflow property allows for two very important, and very different, things to occur: on one hand the consolidations allows for interaction between the different specialised applications (e.g. CYPETHERM HVAC reads the thermal loads of the precincts that have been generated in CYPETHERM LOADS) and on the other, it unlinks the contents of the BIM project from the applications that have been used to develop it (the BIM project is not a file that belongs to a program, it is a collection of IFC files) and so this way the durability and accessibility of the developed work is guaranteed.

Open BIM workflow in specialised CYPE tools

Open BIM workflow in specialised CYPE tools

Open BIM workflow in specialised CYPE tools

Open BIM workflow in specialised CYPE tools

StruBIM

As of the 2016.k version the view of the BIM model and management of BIM links are incorporated in the program.


The view of the BIM model incorporates the representation of the linked IFC model or models in the view of the bar analysis model.


This view window is opened from the Window menu > Open new > BIM model.


The BIM model can be represented as transparent or solid, as well as having the option to view the analysis model.


In the BIM model window, all the IFC models in the linked models list are displayed. Users can link the IFC files present in the directory containing the IFC files of the physical model with which the analysis model is imported (BIM project directory).


Open BIM workflow in specialised CYPE tools


Changes in the IFC files of the BIM project directory are reflected in the Update button, which displays a warning notifying users that the model should be updated.

CYPELUX. Open BIM workflow in specialised CYPE tools

CYPELUX. Open BIM workflow in specialised CYPE tools

CYPELUX

CYPELUX is a tool integrated in the Open BIM workflow. This integration method is achieved by importing and exporting data files in IFC4 format. The first step is to import a BIM model, containing information on the geometry of the building, using IFC files generated by CAD/BIM software such as Builder, Allplan, Archicad or Revit.

The program allows users to insert the model using the “import” option in the toolbar or to start a new project. Once the process has been initiated, a wizard will guide users in the selection of elements to be incorporated into CYPELUX.

The Open BIM workflow consolidation allows users to export the results that have been obtained to an IFC file. This file contains the dimensions of the lights and their most significant technical data, so that this data may be incorporated in the project directory to then be introduced in other programs requiring it.

To export the lighting installation from CYPELUX, the job must be analysed and then exported using the “export” button. This way, an IFC file will be generated containing all the information of the lights used.

CYPELUX also imports the location of the distribution panels of the lighting installation based on IFC format files generated by programs that work with Open BIM technology. The illuminance level, required to comply with the current standard, can then be calculated at the points were the lights are installed.

 

CYPELUX. Open BIM workflow in specialised CYPE tools

 

Open BIM workflow in specialised CYPE tools

CYPETHERM

CYPETHERM

CYPETHERM

The specialised tools: CYPETHERM HE Plus, CYPETHERM LOADS, CYPETHERM HVAC and CYPETHERM EPlus, allow users to import geometric models in IFC4 format and export and import information related with the analysis and design of the building services of the building, which is obtained using the tools. This way the BIM model of the project is updated and the Open BIM workflow is closed.


The four CYPETHERM tools allow users to automatically generate a new job by importing a BIM file with geometric information. Furthermore, each tool can import any additional IFC files generated by the remaining specialised CYPETHERM programs which may contain useful information for its design when the job is created or at any time during the design process of the job.


As the work is not carried out exclusively with one IFC file containing geometric information of the project, but with a group of IFC files containing the geometric, analysis and design information of the project, each BIM project must be generated in an individual directory to have all the information in a single place and for programs to only read the corresponding IFC files.

 

One of the many benefits of the Open BIM workflow can be seen, for example, in CYPETHERM LOADS and CYPETHERM HVAC. From CYPETHERM LOADS all the information of the thermal loads of the precincts can be exported to IFC format, once the project has been analysed. CYPETHERM HVAC requires the information of the thermal loads of the building to design the air conditioning systems. This information can be introduced by users or can be imported from the BIM project, if the data has been exported from CYPETHERM LOADS.

 

CYPETHERM HVAC also generates files in IFC format that contain the following elements, which have been introduced and designed in the program, so that any related Open BIM workflow programs can display them in the 3D view:

  • Radiators
  • Radiant flow circuits
  • Ducts

 

 


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