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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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Full text: content.pdf (473,694 bytes) (available to registered users only)

Series: w78:2011 (browse)
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Azzedine Yahiaoui, Jan Hensen and A.E.K Sahraoui

Integration Of IT In Building Design And Technology - A Systems Engineering Framework

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Full text: content.pdf (1,016,829 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Christina J. Hopfe, Christian Struck, Jan Hensen and Pieter De Wilde

Considerations Redarding Decision Support Tools

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Full text: content.pdf (398,909 bytes) (available to registered users only)

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Christina J. Hopfe, Nikolas Müller, Christian Struck and Jan Hensen

An Appraisal Of Knowledge Based Systems For Building Performance Simulation

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Full text: content.pdf (801,221 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Doulis, Mario; Vogel, Manfred; Pfluger, Jan; Rietmann, Marco; and Raps, Michael

4Dive - A 4D Interface for the Visualization of Construction Processes in a Virtual Environment

Abstract: In this paper we present 4DIVE, an interface concept for the visualization of construction processes in Virtual Reality (VR). It supports process management tasks of the AEC industry in the field of Virtual Design and Construction (VDC). 4DIVE is developed for the use in projection based Virtual Environments (VEs) like the CAVE or large scale projection walls, supporting stereoscopic visualization in real-time and 3D user tracking. The 4DIVE project focuses on the design of interaction concepts addressing the following topics: (1) The integration and visualization of 4D CAD models in VR systems, (2) the development of 4Record, a tool for recording and replaying paths in the 4D time-space, and (3) the design of suitable input devices and interaction techniques.

Keywords: Virtual Reality, 3D User Interface Design, 4D Technology, 4D Building Models, Input Devices

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Full text: content.pdf (302,962 bytes) (available to registered users only)

Series: convr:2007 (browse)
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Ekholm A

Design as problem handling - outline of a framework

Abstract: This paper presents an ongoing work concerning the development of a theoretical framework for design. The framework is intended to be applied to the development of information systems for architectural design. The paper combines ontological and epistemological perspectives using Bunge’s work as a starting point, supplemented with Schön’s studies of the general nature of design, and with examples of architectural design from Janson’s empirical studies of the Swedish architect Jan Gezelius’ works, as well as the author’s own reflections and conclusions

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Full text: content.pdf (169,940 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.


Henk Freimuth, Jan Müller and Markus König

Planning UAV-Assisted Visual Inspections of Construction Sites

Abstract: Inspection flights on construction sites, carried out with Unmanned Aerial Systems (UASs), should be planned with safety as the primary priority. Although the generation of waypoints may be conducted in an automated fashion, with distance-to-object constraints implemented in the algorithm, the visual review of such flight paths by a human operator before take-off is crucial. Apart from safety concerns, finding the right camera orientation for taking photographs of specific details is a non-trivial task when the camera is mounted to an Unmanned Aerial Vehicle (UAV). The inspection planning application should interactively assist the operator with this task.We propose an interactive and simulation-based inspection flight planning concept. A realistic and detailed simulation allows a quick and intuitive insight about generated flight paths and possible shortcomings of such paths in terms of flight safety. Images, rendered from the virtual scene, with the flying cameraÕs point of view enable the operator to assess the quality of the intended photographs before conducting the flight mission. These previews take into account the main parameters of the camera such as focal length and natural lighting. This minimises the need to readjust parameters or repeat inspection flights to get the right picture.

Keywords: Visual Inspection, Unmanned Aerial Systems, 4D Building Information Modeling, Progress Monitoring, Ground Control, Path Planning

DOI: https://doi.org/10.24928/JC3-2017/0150

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J. S. Kuang and Bartlomiej Jan Baczkowski

Shear Capacity Of Steel Fibre Reinforced Concrete Coupling Beams

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Series: w78:2006 (browse)
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Jan Karlshoj

Impact of Construction Technologies on Education in Denmark

Abstract: An increased interest for the use of BIM in the Danish construction industry and an expressed need for students with knowledge on ICT have had impact on what students are taught in at the Technical University of Denmark. This is partly due to the Danish state started to require the use of BIM-models and handover of models in IFC-format in 2007. Since 2008 students at BSc. and MSc. level are taught more in interoperability and in BIM tools than in the past. To fulfil this demand a multidisciplinary course in "Advanced building design" has been developed at the Technical University of Denmark. The goal of the course is through project work to provide training in transprofessionalism and teamwork as well as using building information models at the final stage of the engineering education. Both students from the Architectural Engineering and Civil Engineering study lines have follow the course. The students had in teams to develop an outline and project proposal of building complex with a volume of about 40,000 square meters. In addition to prepare drawings according to the present requirements which are valid in ordinary projects, the students should as in Danish state projectshand-in BIM models in IFC-format and document results from the use of clash detection tools. Several experiences from the course have been gained. It is difficult for the students to work in multidisciplinary teams and make an outline and a project proposal without direct guidance from the teachers. The students underestimate the effort it takes to integrate components from different disciplines in a BIM model. The evaluations of the course by the students have been very ambiguous, since some have seen this as a good opportunity to learn about carrying out projects which simulate real building construction projects while others are very sceptical about working in multidisciplinary teams and see modelling as unworthy work for an engineer.

Keywords: MSc. education, BIM, mandatory use of BIM, choice of tools

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Full text: content.pdf (141,274 bytes) (available to registered users only)

Series: w78:2010 (browse)
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Jan Tulke, Jochen Hanff

4D construction sequence planning – new process and data model

Abstract: Model based working is only just getting introduced in the construction sector to support design and pro-ject management. In particular, construction sequence planning as one of the key processes in a construction project can benefit from model based working. Since the time schedule defines sequences of activities and allocates resources such as material and labour, it plays an important role in optimizing and managing a construction project. In this respect, model based working can offer more to construction sequence planning than just a visualisation of the construction sequences, in which the term ‘4D simulation’ is today commonly understood. Still, available 4D simulation software packages do not engage in the scheduling work but require major additional effort after the time schedule has been finished. The links between the objects of the 3D CAD model and the activities of the time schedule have to be established manually, i.e. the user has to select certain objects and assign them to a related activity in the time schedule. Furthermore, a 4D simulation merely adds limited value due to a restriction to visualisa-tion of construction sequences only. This additional effort for creating the 4D simulation and limited benefit of having a visualisation of construction se-quences only, seem to be the main drawbacks as a result of which 4D simulation still has not crossed the threshold to daily practice. To significantly improve the efficiency of creating a 4D simulation this article presents a solution for creating time schedules and 4D simulations based on data stored in a building model.

Keywords: 4D simulation, scheduling, construction planning, model based planning, building information model

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Full text: content.pdf (2,067,627 bytes) (available to registered users only)

Series: w78:2007 (browse)
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