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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 Mediavilla, A Romero, J Pérez,F J Mata

Energy efficiency assessment in urban environments using GIS

Abstract: Energy simulation tools are commonly used in building design processes. Their calculation methods are comprehensive and widely accepted. However, the increasing requirements imposed to comply with low emission urban scenarios demand a wider scope analysis, taking into account not only the building, but also the interactions between urban elements (buildings, green areas, urban lighting…). GIS technology seems suitable for this purpose, but current solutions do not include deep energy demand calculations. On the other hand, building simulation tools do not consider the city environment and terrain influence. To evaluate a district by manually adding single building simulations results is an overwhelming process, prone to errors and very time-consuming.In this scenario, urban planners demand Decision Support Systems that go beyond traditional building-scope simulation engines and consider both building and urban-level variables in order to assess the energy efficiency of the urban design.Aware of this issue, the platform presented in this paper fills this gap between building and city approaches. It consists of an ArcGIS customisation, implementing energy simulation models for radiation, energy demands, consumption, energy costs and CO2 emissions. The results are simulated and visualized at different levels (façades, buildings and city). Thus, it is possible to benchmark the district against a reference scenario and certify the sustainability of a district. It has been validated with a new urban development scenario in northern Spain.The platform seamlessly integrates CAD cartography, GIS geoprocessing and the calculation strength of excel sheets, enhanced with 3D energy mapping outputs which can be seen in Google Earth. It does not require deep technical knowledge, being suited for multicriteria analysis. Its modularity allows extending it with future extensions.

Keywords: GIS, energy efficiency, low carbon cities, urban planning, simulation

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Amit Dayan and Rafael Sacks

Cognition Enhancement Using Virtual Reality in Apartment Customization

Abstract: The design and construction of customer configured apartments is challenging when customers are unable to interpret construction drawings or lack the knowledge or competence to deliver the decisions and information that is required from them. Builders dedicate significant managerial and technological effort to manage the customization process with their customers, and this process is commonly recognized to be inefficient. Studies suggest that one root cause is the fact that most customers are not construction professionals, hence decision making is often a challenging and sometimes unpleasant task for them due to insufficient product cognition. In this study we developed a virtual reality tool for the facilitation of an immersive presentation of yet to be built apartments to customers, speculating that cognition may be enhanced and facilitate the customization decisions. An experiment was conducted to identify and measure cognition differences. Some areas of measured cognition shown noticeable improvement which imply for significant cognition enhancement. Exploitation of the findings by future adoption of the examined method is discussed and suggested to construction companies.

Keywords: Product Customization, Apartment Design Changes, Virtual Reality, Residential Construction

DOI: https://doi.org/10.24928/JC3-2017/0184

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Cameron K B

Project information systems: qualatiy assurance linked to information technology

Abstract: The construction industry, slow to react to mmagernent initiatives in the past must now rapidly adapt to the emerging technologies that are being implemented in industry world wide. This paper provides an intrduction to the concept af quality assusmce and examines the implementation of quality management systems within the design and construction industry. By looking at the requirements for a quality system md its application to this industry, there emerges a need to document and control the flow of information, resulting in the project information system. The emerging information technologies can be linked with the development of quality itssumce to provide an enhanced project information system through the lifecycle of a facility.

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Full text: content.pdf (1,503,561 bytes) (available to registered users only)

Series: w78:1993 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.impact (0.017160) class.environment (0.011118) class.store (0.008645)
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Permission to reproduce these papers has been graciously provided by the National University of Singapore. The assistance of the editors, particularly Prof. Martin Betts, is gratefully appreciated.


Carozza L,Bosché F,Abdel-Wahab M

Image-based localization for an indoor VR/AR construction training system

Abstract: Virtual /Augmented Reality (VR/AR) technologies have been increasingly used in recent years to support different areas of the construction industry. Their simulation capabilities can enable different construction stakeholders to evaluate the impact of their choices not only on the built environment, but also with regard to the correct execution of operational procedures. Training providers, such as Further Education (FE) colleges, can also enhance their trainee’s experience through the simulation of realistic construction contexts whilst eliminating health and safety risks. Current approaches for the simulation of learning environments in Construction, such as Virtual Learning Environment (VLEs), provide limited degree of interactivity during the execution of real working tasks. Whilst immersive approaches (e.g. CAVE-based) can provide enhanced visualization of simulated environments, they require complex and expensive set-up with limited practical interaction in real construction projects context. This paper outlines a localization approach employed in the development of an Immersive Environment (IE) for Construction training, cheaper than CAVE-based approaches and which has the potential to be rolled-out to the FE sector for maximizing the benefit to the construction industry. Pose estimation of the trainee is achieved by processing images acquired by a monocular camera integral with his head while performing tasks in a virtual construction environment. Realistic perception of the working environment and its potentially hazardous conditions can thus be consistently delivered to the trainee through immersive display devices (e.g. goggles). Preliminary performance of the localization approach is reported in the context of working at heights (which has a wide applicability to a range of construction trades, such as scaffolders and roofers), whilst highlighting the potential benefits for trainees. Current limitations of the localization approach are also discussed suggesting directions for future development.

Keywords: Image-based,localization,VR/AR,construction training

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Series: convr:2013 (browse)
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Ciftcioglu O, Durmisevic S, Sariyildiz S

Building design support by hierarchical expert networks

Abstract: "Rapid advances in parallel processing technologies gave essential impetus to intelligent information processing, which became the driving source of an emerging technology known as soft computing. This calls for intelligent systems that are able to process information which may be complex, uncertain even incomplete or contradictory. In this context, neural networks and fuzzy logic are the essential tools. Considering the merits of each approach separately, most suitable computational intelligence method can be used for a specific application. Additionally, the combination of these methods can provide enhanced information processing for decision-making with enhanced reliability. For building design, the computational intelligence system use a knowledge base formed by means of neural network and fuzzy logic (neuro-fuzzy) techniques, from a building design database. The application of such a system to a building design task was preliminarily demonstrated earlier [1]. The present research describes a systematic neural fuzzy modelling of data that form a knowledge base in a hierarchical form (s.figure below). Each sub-knowledge base represents a local expert, being level-one expert and the association of local experts forms a more comprehensive expert that becomes a global domain expert as level-two. The association of the experts is accomplished by means of fuzzy-logic-driven gating network that performs, the information handling as required. Although, the present paper describes two-level hierarchical experts as local and global, the associations can be done in more subtle form, i.e., in more than two steps so that the level of experts can be categorised in multi-level form. In such more complex structures, multi-level experts require related gating network that could similarly be designed. The building design support system with the expert network developed, as a whole, is generic enough for decision-makings with a novel systematic approach concept using appropriate database. Accordingly, the research deals with a particular architectural building design with efficiency and consistency features using the hierarchical expert network system described [1] Ciftcioglu O, Sariyildiz S. and Veer P. v.d., 1998 , Information Ordering for decision support in building design, D and DSS, Design and Decision Support Systems 4th International Conference on Design and Decision Support Systems in Architecture and Urban Planning, Castle Vaeshartelt, Maastricht, July 26-29, The Netherlands"

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Full text: content.pdf (519,213 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.064229) class.synthesis (0.019630) class.man-man (0.013152)
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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


Ciftcioglu O

Classification of construction information with fuzzy attributes

Abstract: Construction industry deals with various kinds of diverse information, which have to be synergistically handled. Information can be engineering data from exact sciences as well as linguistic or qualitative data from soft sciences. In such a wide spectrum to deal with the context dependent information optimally in perspective is a formidable task. The loss of benefit from available information is reflected on the cost effectiveness and efficiency of the construction. Referring to the complexity of this information, intelligent technologies can be of important help to assess information in a particular context in perspective for enhanced assessment of the construction process while it is in progress. In this respect, role of intelligent technologies, in particular, fuzzy logic, neural network and evolutionary search algorithms, in dealing with construction information is discussed and exemplified. In particular, in fuzzy logic terms, classification of construction information with fuzzy attributes/semantic labels is described.

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Full text: content.pdf (287,397 bytes) (available to registered users only)

Series: w78:2003 (browse)
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Permission to reproduce these papers has been graciously provided by the University of Auckland. The assistance of the editor who provided the full texts and the structured metadata, Dr. Robert Amor, is gratefully appreciated.


Drewer S, Hazlehurst G

Myth and reality in the use of IT and computer based technologies in construction

Abstract: IT and computer based technologies are a catalyst for focusing attention of managers on technical and commercial efficiency. It is sometimes argued that a detailed evaluation of existing practices, in itself, generates a better understanding of the factors constraining efficiency. But it is also argued that it is the computer based technologies themselves which deliver improvements in efficiency. Because the construction process is fragmented, the overall efficiency of the process might ' a priori ' be enhanced by the use of IT and computer based technologies. However, this assumes that a coherent strategy for their use is in place, both within individual companies and practices, and within the wider construction process. Our current research has highlighted a problem, within a majority of construction engineering and design organisations, which constrains the development of 'IT' beyond that of discrete applications. The lack of a coherent strategy for the integration of these technologies within a company is a major constraint on their effective use within the organisation. The integration of the use of the technologies between separate organisations within the construction process, posits problems of an even greater level of complexity. This paper, has two primary objectives: to articulate the major constraints to the effective use of ' IT ' in order to develop a set of relevant criteria for evaluating future investments; and to examine the rationale for, and mechanisms through which, integrated systems, both within organisations and the construction process, may be introduced.

Keywords: construction; information technology; management; technology transfer; corporate strategies

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Full text: content.pdf (682,544 bytes) (available to registered users only)

Series: w78:1993 (browse)
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Permission to reproduce these papers has been graciously provided by the National University of Singapore. The assistance of the editors, particularly Prof. Martin Betts, is gratefully appreciated.


Georgios Nektarios Lilis, Kyriakos I. Katsigarakis, Georgios I. Giannakis and Dimitrios Rovas

A Cloud-Based Platform for IFC File Enrichment with Second-Level Space Boundary Topology

Abstract: To facilitate the automatic generation of building energy performance simulation models from BIM data sources and support multiple building designs almost simultaneously in a district environment, a cloud-based platform which uses containerized micro-services for the generation of the required buildingÕs second-level space boundary topology from IFC geometric data, is introduced. The platform uses as input, in a parallel fashion, multiple IFC files, and executes the Common Boundary Intersection Projection (CBIP) algorithm, for the generation of the enhanced IFC files containing the second-level space boundaries of all buildings. The platform utilizes auto-scaling feature that automatically adds and removes CBIP instances depending upon actual usage. In order to test the functionalities of the platform, certain IFC data files have been uploaded to its repository.

Keywords: IFC, BIM, Second-Level Space Boundaries, Building Energy Performance Simulation, District

DOI: https://doi.org/10.24928/JC3-2017/0284

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Haque M E

3-D visualization and animation techniques in structural design education

Abstract: As technology rapidly changes, the importance of educating and training diverse populations of civil/construction engineering/science students becomes more critical. With the advances in information technology over the last decade, the traditional teaching format of having an individual lecture to an audience has been supplemented, and in some cases, replaced by the rapid development and implementation of new distance learning methods. Traditional lecture format teaching methods sometimes fall short of conveying the complex analysis and design principles that need to be mastered in structural design. However when the theories are exemplified in a virtual environment with multimedia, animation, interaction, and manipulated image visualization techniques, students' conceptual understanding are enhanced. The important advantages of the virtual reality environment over other computer-based design tools, are that it enables the user to interact with the simulation to conceptualize relations that are not apparent from a less dynamic representation, and to visualize models that are difficult to understand in other ways. The interactive nature of virtual environments made it a natural extension to the 3-D graphics that enable students to visualize real life structures before actually building them. The main objective of this research was to create an innovative structural design concept visualization methodology on a web-based interactive virtual environment. The approach adopted in this research was to create the interactive learning environment using Java and Virtual Reality Modeling Languages (VRML). VRML was the primary language used to create a virtual environment and 3-D simulation, and Java applets were created for interactive analysis, design and structural behavior animation over the World Wide Web (WWW). The presented paper illustrates the design concept visualization techniques for reinforced concrete structure analysis and design.

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Full text: content.pdf (446,018 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.062502) class.education (0.055487) class.man-software (0.034286)
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Permission to reproduce these documents have been graciously provided by CSIR Building and Construction Technology. The assistance of the editors, Mr. Gustav Coetzee and Mr. Frances Boshoff, is gratefully appreciated.


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