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A decision support system for building refurbishment design

Abstract: "Refurbishment work in the EC currently accounts for more than one-third of the total construction output. This market is expected to grow stronger with the progressive ageing of buildings and the environment impetus to retain buildings. A further dimension is the need to adapt buildings for a greying population. There are important differences between refurbishment and new construction works. The existing building constraints the design solutions, construction technologies and work methods. Mechanisation, planning, and efficient organisation of refurbishment work is difficult, due to the small, labour intensive, and ad hoc, dynamic nature of the work. Also due to the relatively small scale of refurbishment projects, there have been no opportunities for standardisation and the applications of prefabrication and industrialisation are limited. Today, larger sized contractors are rapidly moving into the refurbishment market, in response to the shrinking new-build market and the higher technological demands of large scale refurbishment projects. The EC funded Brite Euram project 4670 is titled ‘Decision Support Systems for Building Refurbishment.’ This project has started in August 1998 and will finish in July 2001. Its objective is to develop a socio-technological-commercial framework and corresponding Decision Support Systems (DSSs) for housing refurbishment, to achieve: ? refurbishments which are more focused on user requirements; ? refurbishment designs which take into account the constraints of the existing building structure; ? increased incorporation of industrialised systems and components; ? organisational procedures and production technologies that recognise the unique nature of refurbishment work. The project is divided into three tasks. Task one aims at developing a DSS for the determination of the refurbishment demand and ballpark costs. Task two involves the development of a DSS for refurbishment design. Task three will result in a DSS for refurbishment process planning and control. This paper describes the approach followed for the ongoing development in task two, the DSS for refurbishment design. The main objectives of this task are to provide decision support at the project level. It will develop a database of layouts of representative existing housing estates and a database of preferred refurbishment layouts for these representative existing housing estates. Another database will be developed containing information on building systems and components that are relevant for the refurbishment process. Task two will establish a protocol for refurbishment design support. This protocol, which is implemented in a decision support information system, involves a number of steps that aid the user in selecting an appropriate housing layout and building systems and components that meet the user’s requirements. These steps involve the evaluation of a the user’s refurbishment demands and selection of a matching representative existing housing layout. Based on further dialog with the system, a preferred refurbishment layout is selected, which in turn is used as the basis for the selection of building systems and components that meet the performance requirements as stated by the user. The paper describes the methodology that is implemented in the system for retrieving performance requirements from the user, and the approaches for matching these to the stock of existing and preferred housing layouts available in the system’s database. The system is characterised by a flexible architecture of both the databases and the user interface, which results in a scalable system that allows the expansion of the databases with new graphical layouts and building systems and components, as well as the addition of new kinds of performance requirements. The system is implemented as an Internet application, which allows the database to be maintained centrally and facilitates world wide access to the system. The system’s implementation involves the combination of graphical and non-graphical data that can be queried and matched with only typical Internet browsing software installed at the client-side."

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Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.029035) class.environment (0.012122) class.impact (0.010657)
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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


_. Jarský

Modelling of buildings and projects with utility assessment

Abstract: The paper describes the methodology of computer modelling of the building process of facilities and projects with utility assessment and the main principles of the integrated cost estimation, project management and quality assurance microcomputer based system developed recently. This expert system is based on quick modeling of the building process by use of typical construction technology network diagrams, which can be prepared in advance. The typical network diagrams can be modified according to the spatial conditions of a certain building and to the amount of construction works and materials. For utility assessment a vector of 10 main aspects (criteria) was created with a common measure unit and certain level of importance each. A database of construction processes was created including the aspects for utility assessment. Thanks to these features the model of the building process can be made about 50 times quicker than current project management systems and it can be used for bidding, project planning and management and utility assessment.

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Series: w78:2009 (browse)
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A Akanmu, C J. Anumba, J I. Messner

Mechanisms for Bi-directional Coordination between Virtual Design and the Physical Construction

Abstract: There is considerable growth in the use of virtual models in the construction industry. Many projects are now based on fairly sophisticated models but the use of these models is often limited to the design and tendering/bidding stage. Much more benefit can be derived from these models by extending their use to the construction, operation and maintenance phases of a facility’s lifecycle. A good way of achieving this will involve real-time bi-directional coordination between as-designed models and the physical construction. This will enable improvements in progress monitoring, construction process control, archiving as-built status and active control of building components and sub-assemblies. To maintain bi-directional coordination, computational resources are required to tightly integrate the virtual models and the physical construction. This is termed a Cyber-Physical systems approach. This paper focuses on describing the role of the Cyber-physical systems approach in enhancing bi-directional coordination. It highlights the mechanisms necessary to facilitate this and presents future deployment scenarios to illustrate the potential benefits to the construction industry.

Keywords: Bi-directional coordination, Building Information Models, Cyber-Physical Systems, Physical Construction

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Series: w78:2011 (browse)
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A Almarshad, I Motawa, S Ogunlana

INVESTIGATING KNOWLEDGE MANAGEMENT IN PUBLIC BUILDING MAINTENANCE IN KUWAIT

Abstract: Public Building Maintenance (BM) departments in Kuwait have the duty of maintaining buildings that vary in shape, type, size, complexity and purpose. The services provided by the departments extend from minor repair works to bespoke renovation and reconstruction projects making the process of maintenance complex. Knowledge Management (KM) is being implemented by organisations to improve their business performance. This paper is based on a study that investigated the current state of KM in the public part of the BM sector. Interviews were conducted to identify BM process, current KM activities and tools, barriers to knowledge sharing and perception to KM implementation. Findings of the study have assisted in modifying a proposed BM process based on procedures followed by the majority of interviewed departments, where knowledge capturing, organising, and retrieval activities can then be embedded in the process. The study revealed that there is lack of formal knowledge management techniques carried out within departments. Furthermore, there is no established communication links between branches of the same department resulting in lack of experiences and knowledge exchange between colleagues. Cultural/ethnic differences, fear of losing job, not knowing how to share knowledge and lack of time were the main barriers to knowledge sharing. However, the participants showed a positive attitude toward the introduction of a KM system with added activities and roles in the BM process related to KM.

Keywords: Building maintenance, Knowledge management, Kuwait, Public sector.

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A den Otter, H Jan Pels, I Iliescu

BIM VERSUS PLM: RISKS AND BENEFITS

Abstract: Applying Building Information Modeling (BIM) is a hot issue. The Building industry feels the urge to use it, but at the same time companies see huge risks, since the ownership and control of information becomes unclear when all building information is put together in one model. Also the cost and the benefits do not always land at the same place. To that account three Dutch firms operating in multi- disciplinary building & construction projects asked the authors to execute a research and design project how to solve this problem. As a result a framework for assessing risks was developed for setting up a successful BIM process. It seems the manufacturing industry is much ahead of the Building industry in using these concepts and technology, be it under the name of Product Lifecycle Management. However, comparing the approaches in the Building industry and manufacturing industry shows that, while construction is primarily interested in the risks, manufacturing is primarilyu focussed on the benefits. The paper tries to explain this difference and concludes with some suggestions to reduce risk and enhance the benefits of BIM for construction companies.

Keywords: Data collection, Product Lifecycle management, Building Information Modeling and Data storage.

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Series: w78:2011 (browse)
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A Ekholm, L Häggström

BUILDING CLASSIFICATION FOR BIM – RECONSIDERING THE FRAMEWORK

Abstract: The purpose of building classification systems is to provide the sector with agreed and standardised ter¬minology and semantics, e.g. in systems for technical specification, cost calculation, and exchange of information. There is a growing need to use classification systems in a BIM context. In inter¬¬national construction projects and international construction product trade there is a need both to translate between national classification systems and to develop common systems. The idea behind the inter¬¬national framework standard for building classification ISO 12006-2 is that national systems would be easier to compare if they adhere to the class definitions suggested in the standard. A study of two classification systems, the BSAB system in Sweden and the DBK system in Denmark, both within the framework and yet not compatible, has risen the idea of a deeper analysis of the theoretical basis for the ISO 12006-2 classification system to find a solution to this problem. The project has developed such a theoretical framework in order to clarify the relationship between classes representing parts of buildings in the ISO 12006-2 standard, specifically the Construction entity part, Element and Work result classes. This is specifically needed when the standard is used in the context of BIM, since building models include both specialization and compositional relations among information objects representing parts of buildings. The proposed theoretical framework is based on a systems view on the built environment that distinguishes constructions in four main compositional levels: construction entities, technical systems, building elements and components. Based on the theoretical framework developed in this project, possible new interpretations of the classification standard ISO 12006-2 are discussed.

Keywords: building classification, ISO 12006-2, BSAB, DBK

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Series: w78:2011 (browse)
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A Grilo,A Zutshi, R Jardim-Goncalves

BUSINESS INTEROPERABILITY IN THE CONTEXT OF BIM-BASED PROJECTS

Abstract: This paper proposes a model that closely captures the factors that are responsible for Business Interoperability in the context of collaborative business processes for the deployment of Building Information Modeling. The Business Interoperability Quotient Measurement Model (BIQMM), uses an interdisciplinary approach to capture the key elements responsible for collaboration performance and BIM platform configuration. Through the quantification of the relevance of each element to the particular collaboration scenario, and with the combination of the BIQMM with a multi-criteria decision making tool, the Analytical Network Process (ANP) approach, this model enables a quantitative analysis of Business Interoperability for BIM-based projects, so that an overall interoperability score can be calculated for enhanced performance measurements. An application scenario is presented and the application of the BIQMM and ANP, provides a comprehensive framework for interoperability measurement. The paper concludes by recognizing that relationships between business interoperability and true AEC performance improvements and subsequent economic benefits derived from BIM-based approaches needs to be further developed.

Keywords: Business Interoperability, BIM; Collaborative Working Environments

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Series: w78:2011 (browse)
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A Inayat, H Melhem

Critical Success Factors for Different Organizations in Construction Projects

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Series: w78:2012 (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)

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Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


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