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A Cormier, S Robert, P Roger, B Hilaire

Towards a BIM-based service-oriented platform for a collaborative multidisciplinary teamwork

Abstract: With the growing trend in the building industry to usesoftware tools able to handle Building Information Model (BIM), staffs are more and more confronted with workflows conflicts. In order to improve their efficiency, up-to-date techniques for dealing with BIM sharing are required. Attempting to address this issue, a web services platform, especially optimized to deal with the already well-recognized Industry Foundation Classes (IFC) open standard, has been developed.This article describes the platform (architecture, software components, technologies), specially emphasizing on the strategies envisaged for collaborative work support. To illustrate resulting benefits for the building industry,it also gives an overview of the work already performed on a platform service dedicated to dynamic thermal simulation.

Keywords: BIM, IFC, Software-as-a-Service, Life Cycle Support, Design, Simulation

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Series: w78:2011 (browse)
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A Jaly-Zada, C Koch, W Tizani

IFC Extension for Design Change Management

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Series: w78:2015 (browse)
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A Karavan, M Neugebauer & K Kabitzsch

Merging Building Automation Network Design and IFC 2x Construction Projects

Abstract: Currently, different design tools and databases are used for building automation networks and construction projects. Effort (design time, tools) can be reduced if these two design spaces can be merged. In this paper an approach for the integration of building automation network design in IFC 2x is introduced. Based on the resulting model, existing tools are to enhance in order to accomplish a holistic design approach for construction projects.

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Full text: content.pdf (539,739 bytes) (available to registered users only)

Series: w78:2005 (browse)
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Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


A Kiviniemi & J Haymaker

Integration of Multiple Product Models

Abstract: The development of the Industry Foundation Classes (IFC) started from the vision that an integrated building product model would cover all necessary information for a buildings’ entire lifecycle: from requirements management, through different design processes to construction and maintenance processes. Although the IFC model specification covers a substantial part of the required information, AEC projects still have encountered many problems putting this model into practice. AEC professionals still find it difficult to have dynamic, lossless, truly effective data flow amongst the different participants and applications. It is obvious that file based data exchange alone is not a feasible solution - some other solution for integrating project information is necessary. This workshop discusses some viewpoints and potential solutions to the above issues and problems.

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Full text: content.pdf (117,391 bytes) (available to registered users only)

Series: w78:2005 (browse)
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Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


A Kiviniemi, M Fischer & V Bazjanac

Multi-model Environment: Links between Objects in Different Building Models

Abstract: The current IFC specifications include relations between objects and enable representation of complex structures in a building product model. However, several research projects have addressed the problem of one integrated model by pointing out the different content and structure of different design domains. The existing software products cannot support all features of the IFC specifications, and because of the structure of AEC industry there are no potential customers for applications which would cover all different information needs. We believe that there will be several instantiated models representing a building project, and these models share some parts of the information which must be linked between the models. However, IFC specifications do not enable links between objects in separate instantiated models. This paper will (1) discuss the reasons for the separation of instantiated models, (2) present the necessary extensions of the IFC specifications, (3) include examples of the links between the requirements model and architectural design model, and (4) discuss some possibilities how to implement this link in a model server environment.

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A Kiviniemi, M Fischer & V Bazjanac

Integration of Multiple Product Models: IFC Model Servers as a Potential Solution

Abstract: The development of the Industry Foundation Classes (IFC) started from the vision of an integrated building product model which would cover all necessary information for buildings' whole lifecycle: requirements management, different design activities and construction and maintenance processes. Although the IFC model specification covers a substantial part of the required information its implementations into practical applications have shown several serious problems. One of the main problems is that the internal structures of the different software products do not support the information needs for the whole process. Thus, the idea of lossless, incremental data flow through the different applications used by the project participants has not come true. It is obvious that file based data exchange is not feasible solution, and some other solution for integrated project data model is necessary for the AEC industry. This paper discusses some viewpoints and potential solutions to the above problem.

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Full text: content.pdf (842,373 bytes) (available to registered users only)

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A-S Dris, V Gouranton, B Amaldi

Integration concept and model of Industry Foundation Classes (IFC) for interactive virtual environments

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Full text: content.pdf (500,343 bytes) (available to registered users only)

Series: w78:2016 (browse)
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Agger K

Geneobjectclases in construction IT

Abstract: The Geno project intent to participate in the development of the next generation of construction IT systems. Goals for this research should be to: * loose the design process from the production of design documents * free the geometry from orthogonal projection * make possible a full, variable, complete detailing without loosing consistency * move the development of building component specific IT modeling * tools closer to the end user * improve the efficiency and capability of these modeling tools The Geno project works with three developer / user layers: * GenoObjectClasses, the basic standardized data and functional structure, developed by IT specialists in a close dialog with the IAI IFC development. * ProtoObjectClasses: IT tools for modeling spaces, construction elements and parts. Developed by IT specialized architects,engineers, on the bases of Genotypes. Made available to the end user through Internet by component vendors. * PhenoObjects: spaces, construction elements and parts, specified, dimensioned and placed and interrelated by the designer, to be analyzed and supply project information for all participants in the construction and management process. Modeling, analyzing and information seeking and presentation done by Prototypes. The idea of this structure is to improve dynamic and user influence in IT modeling tool development. The standardized class structure for this, the GenoObjectClasses has to support three concurrent models, namely the: * SpaceModel, an interrelated surface model, a non detailed division of the project space in functional spaces (living room, kitchen,bath etc.) and construction spaces (foundation, wall, roof, slap etc.). * ComponentModel, a successive partitioning, ore filling theSpaceModel with building elements, components (facing wall, inner wall, insulation, window, door, ceiling, roof construction, inventory, furniture etc.), interrelated and related to the SpaceModel. * EntityModel, a similar fill to the Componentmodel with buildingparts (brick, joint, plaster, fitting, gutter etc.) to make a complete consistent productmodel possible. The "three model structure" to be filled out successively, add flexibility to the designprocess. When calculations and visualizations is performed the detailed model is used, but in areas with no detailing the model on the lower detailing level is used. This means that the total model will be "complete", if only the SpaceModel has been modeled. The development of GenoObjectClases will build as close as possible on IFC, and seek to expand IFC where it is nessesary. Status for the Geno project is that implementation has been started with AutoCAD ObjectARX.

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Full text: content.pdf (79,484 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.026583) class.represent (0.015546) class.synthesis (0.015011)
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Permission to reproduce these papers has been graciously provided by Royal Institute of Technology, Stockholm, Sweden. The assistance of the editors, Prof. Bo-Christer Björk and Dr. Adina Jägbeck, is gratefully appreciated.


Akinsola A, Dawood N, Hobbs B

Construction planning process improvement using information technology

Abstract: "Construction is a multi-organisation and interactive process. Successful completion of a project therefore depends on the accuracy, effectiveness and timing of communication and exchange of information and data between the supply chain. Unfortunately, the inefficiency of the existing method of communication has become a barrier to several innovative construction processes developed for the industry over the past four decades. Thus, research efforts and direction have since changed. Several studies now focusing on integration of the construction process with communication and standardisation of data exchange, taking advantage of evolving computer technologies. The capability of these technologies, object-oriented technology and the Internet has made a significant impact on other economic sector such as finance, manufacturing, insurance, etc., with significant improvement in performance and productivity. Thus the technology is available but the challenge is utilising the technology to develop method of improving the construction process. To ensure efficient utilisation of IT as enabling tools, formalisation and understanding of the construction processes are required. This will enable the identification of the problems and opportunities of the strategy, and its implementation and performance in practice. The paper presents a detailed model of pre-construction and construction planning processes, based on an on-going research project, that form the basis of the developed planning system. The detailed process mapping methodology using CASE tools and the associated integration of IT tools, as an enabler to aid and improve the planning process, are described. The system provides an interface for integration of CAD data, using IFC objects, within the system. The application of the system offers a promise of significant improvement in both pre-construction and construction processes."

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Full text: content.pdf (375,439 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.economic (0.028439) class.environment (0.027790) class.impact (0.027062)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Alshawi M, Aouad G, Child T, Faraj I, Underwood J

The implementation of the industry foundation classes in integrated environments

Abstract: Integrated Computer Environments have been the subject for research for many years. Among others, the issue of exchanging and sharing data between project participants has been their major concern. International initiative has been set up for this purpose Mainly STEP and the IAI/IFCs initiative. The latter aims to produce standard data models for the building industry to facilitate the exchange of data between all partners involved along the project life cycle. On the other hand, the large increase in the Web usage has made the large software vendors such as Microsoft, IBM, SUN, etc. to produce standards for data communication for client-server applications. These attempts have resulted in the production of the CORBA-ORB (Object Request Broker Architecture - Object Request Broker) which has been recommended by the Object Management Group (OMG) and the Microsoft ActiveX. These standards have facilitated the development of distributed objects environments where users can exchange data from and to different servers without knowing where the objects are store. This is an important concept if the implementation of integrated construction environment is to be successful. The aim of this paper is to report on the findings of a large research project which is being carried out, by the AIC (Automation and Integration in Construction) research group, at the University of Salford. Based on the Salford’s previous experience in the development of integrated environments, such as SPACE and OSCON. This project is adopting international standards in data models and communication protocols. The IFCs have been used as the core data model and has been implemented in a three-tier architecture using CORBA-ORB as its communication standards. The proposed environment adopts open standards and focuses on using existing Internet technology. The project aims to: 1. Test the state of the art technologies and recently emerging standards such as CORBA and IFC, 2. Define and select the necessary software components for the integrated environment, 3. Develop an architecture of this environment which will be implemented with the selected software components, 4. Develop a number of use-cases and scenarios to gain an insight on how such an environment can be used by the Construction Industry professionals.

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Full text: content.pdf (155,922 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software-software (0.049906) class.environment (0.031651) class.processing (0.030486)
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Permission to reproduce these papers has been graciously provided by Royal Institute of Technology, Stockholm, Sweden. The assistance of the editors, Prof. Bo-Christer Björk and Dr. Adina Jägbeck, is gratefully appreciated.


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