Each object name is made by the aggregation of seven characteristics that make it unequivocal. These seven fields, once defined, describe the object in a complete way: category, typology, reference standard or function, principal performance, geometry, dimensions, physical-chemical characteristics. The fields are organized in a way that allows the addition of new characteristics, following the construction sector evolution.
There are different levels of complexity, from simple products to the entire work, passing through activities, workmanship and equipment. Users can either create objects, name them, insert data and BIM models or search for a specific object or category. In Table 1 a short example of the code for a window is given. Table 1. Category window 2. Typology internal bottom hinged 3.
Reference standard UNI 4. Main performance 1. Geometry single wing 6. Dimensions TxWxH 7x90x cm 7. Physical-chemical properties PVC frame Technical datasheets. Technical datasheets associated to specific objects categories give the second level of information and can be seen as the complement of the INNOVance code the code and a technical datasheet together, in combination with the SAP ID, define a specific and unique object.
The necessity of a standardized template for each category of construction objects is clear: having all the data in the same place allows comparisons, statistics and simplifies decision-making process. Figure 2 shows an example of a technical datasheet template, made for construction products bricks, parquet, paint, etc.
Depending on the project phase, data can be entered in the technical datasheet and shared to all the stakeholders, avoiding again delays and overcosts for data transmission and calculation.
Web portal. The portal, which will integrate the actual website www. Technical datasheets, codes and BIM objects will be soon accessible online thanks to a web-service with a user- friendly interface, which is under development. Eventually, web portal will be neither a simple interface for objects download nor a complete substitute of existing BIM modeling, structural and energetic analysis software but, as seen in Figure 3, it will be an instrument able to manage the whole process, exchanging and storing data, making them accessible to everybody.
Figure 3. INNOVance web portal working scheme. The INNOVance web portal has the potentials to become a really powerful instrument and also in this development phase improvements and possible functions are coming out. During next months the test phase will help in discovering criticalities and potential of this tool.
The build-up of a collection of interoperable BIM objects is an important part of INNOVance, making this project one of the most innovative for the construction industry. BIM technology, which is now seen by many as a driving force for the constructions industry, needs operational standards useful to guarantee not only that the information would be shared, but also to make sure that the information could be actually used by any of the actors along the process.
The development of interoperable building libraries is the necessary premise for this, and it is a fundamental step in order to facilitate the diffusion of BIM throughout the industry. The work procedure that has been established can be split in four main points: a analysis and definition of the object model of a technical component; b coding of the component according to the INNOVance standard; c BIM modeling, in this phase the code generated in the former step has to be linked to the component and d set up of the objects for the check phase, in order to verify that they comply with the interoperability international standards of BuildingSmart latest release of the IFC protocol.
A first group of BIM objects, a set of building components taken from the case study of Figure 4 , has been produced in order both to define operational standards and to check the issues related to the specific software tools used for this specific job.
The research will go on in order to verify interoperability, to identify solutions to critical issues, and to produce technical elements being part of different subsystems, such as plants and others. Figure 4. INNOVance test building. INNOVance is now developing BIM library and server sections, obviously in parallel with all the other above-mentioned project activities.
Figure 5. By unequivocal names, technical datasheets and BIM objects, all organized in the INNOVance portal, each user can manage his projects, since the design brief and through all the further phases. After almost three years of work, potentials have been assessed and main criticalities solved but there are still lots of important improvement that can be implemented. INNOVance database is going to be an enabler for collaboration, providing transparent definition of agreed deliverables from each contributing party at every single project work stage.
This approach enables each party to understand their shared obligations to the project and also provides clear understanding as to the materials they can expect to receive at the start of each work-stage, thus enabling them to deliver appropriate information, data and geometry themselves. BuildingSmart, Hamil Digital documents should be in open pdf format or in other open formats such as xml, rtf, etc.
Information models must be shared using the IFC format ISO defined according to the specific objectives and use of the model, i. Moreover, due to the intrinsic difficulty in modifying models and documents in open format, the Contractor should share also the native documents to facilitate the re-use of the models in the life cycle of the good.
Open and proprietary formats should always be coordinated and consistent. Comparative diagram of some LOD scales national [IT] and international [USA and UK] and definition range of the corresponding informational attributes in respect of the process stages of Italian public law.
Some objects need to be defined according to both a 3D and a 2D graphic representation due to the need of transfer the technical information to the specialists. In the light of the relevant state of the art at international level, as well as the regulations in force in the national context, a structure capable of being adapted to various types of contract has been developed, in such a way as to allow a standardisation of the same to optimise its use both by the Commissioning Body and by Competitors.
Moreover, the identification of a general structure that can be adapted according to the specific works paves the way for the process standardisation of the Commissioning Body. The specifications described herein have been validated on a first case study and this has allowed the Authors to fine-tune the specifications according to the real needs of both the Commissioning Body and the Competitors.
This condition is valid provided that all the geometric and non-geometric attributes external to the graphic models are nevertheless unequivocally associated with the object or the objects for which the LOD is being assessed. The images or other third party material in this chapter are included in the chapter's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the chapter's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
Skip to main content Skip to sections. This service is more advanced with JavaScript available. Advertisement Hide. Open Access. First Online: 31 December Download chapter PDF. Figure 1 presents the awarding process from the call up to the definition of the Contract BEP. Open image in new window. Thus, the development of building information models usually requires the coordination between several specialistic information models that must make reference at least to the following points: identification of the common system of reference coordinates; development of individual graphic models UNI a for all the disciplines involved in the intervention; definition of an aggregate graphical model UNI a of all the specialistic models; coordination and control of all specialistic models by the analysis of interferences clash detection; UNI c and inconsistencies code checking; UNI c ; creation of information management rules for the contract Pre-Contract BIM Execution Plan, Contract BIM Execution Plan and related documents according to the needs and information requirements of the client explained in the EIR; creation and management of libraries of digital objects necessary for modelling UNI a ;.
Without prejudice to any contrary overriding indication contained in the specific tender documents, for the purpose of information modelling, individual graphic models for each discipline involved in the intervention are required.
The following list provide an example of possible specialistic models. In order for the graphic models to be developed by applying modelling criteria allowing them to be read, queried, and subsequently reworked easily, in all cases in which this is possible, the rules for a correct parameterisation of the elements by introducing the appropriate geometric constraints must be abided by. Below are some reference rules that exemplify the general principles described above with reference to the use of digital objects in the development of information models: all objects used in the graphic models should be associated with the natural level of localization according to the specific discipline and regulations ; all the vertical elements walls, pillars, etc.
The modelling flow proposed in the EIR is synthesised in Figs. Figure 4 proposes an example of integration between objects, models and documents in the CDE highlighting the graphic and non-graphic nature of LOD. ISO ISO —Organization of information about construction works—Information management using building information modelling—Part 1: concepts and principles Google Scholar. Mirarchi C, Pavan A.
In: European conference on computing in construction. Chania, Greece Google Scholar.
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