Dawood N, Sriprasert E, Mallasi Z, Hobbs B
4D visualisation development: real life case studies
Abstract: Visual 4D planning and scheduling technique that combines 3D CAD models with
construction activities (time) has proven benefits over traditional tools, such as bar
charts and network diagrams. In 4D models, project participants can effectively
visualise and analyse problems regarding sequential, spatial, and temporal aspects
of construction schedules. As a consequence, more robust schedules can be
generated and hence reduce reworks and improve productivity. Currently, there are
several working research prototypes and commercial software that have ability to
generate 4D model. However, two major issues arise regarding the current 4D
development approaches and the use of commercial software. These are the limited
feasibility to large and complex projects, and inflexibility to incorporate more
construction problems (nD modelling) especially for process constraints such as
spatial conflicts, and availability of information and resources.
As a part of the VIRCON project, an EPSRC funded research, this paper introduces
a pragmatic approach to develop extensible 4D visualisation using two real life
case studies. ProVis, a 4D simulator, was developed using Visual Basic for
Applications (VBA), accessing the integrated products and processes from the
VIRCON database and produces 4D model in the AutoCAD environment. This 4D
tool is also integrated with a Critical Space Analysis (CSA) tool (another VIRCON
tool) and is able to visualise spatial overload of the construction site. The paper
details 4D development process based on the proposed approach and discusses
efforts spent to convert general project information (2D drawings and schedules) to
4D models. It is concerned that a little additional effort was needed to develop the
extensible 4D model based on the proposed approach. In addition, no commercial
4D software was used to achieve the visualisation process.
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Class: class.social (0.022151)
class.software development (0.008395)
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Permission to reproduce these documents have been graciously provided by the Aarhus School of Architecture, Denmark. The assistnace of the editor, Prof. Kristian Agger, is gratefully aprecciated.
Dawood N, Sriprasert E, Mallasi Z, Scott D
An industrial evaluation of the virtual construction site (VIRCON) tools
Abstract: Implementation of the emerging information technologies in the construction industry has been relatively slow in comparison with other industries. Many research and development projects conducted by academia have not been tested and implemented successfully in the real practices. Considering this issue, the VIRtual CONstruction site (VIRCON) research project, funded by the UK government, was developed. VIRCON is a strategic decision support system for practical use to manage construction schedules, and in particular space planning. The successful development of the system was based upon the industrial requirements, real-life project data, and finally evaluated by the industrial collaborators. This paper briefly introduces the VIRCON system and thoroughly reports on the industrial user evaluation. The aims of the evaluation were to establish the usefulness and usability of the individual VIRCON tools, and to indicate the potential commercialisation and implementation of VIRCON tools in real practices. Ten collaborators from the construction industry evaluated VIRCON through a real-life case study. The space planning approach and visualisation features developed in this project were found practical and communicative.
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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.