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Aish R

Master architect: an object based architectural design and production system

Abstract: Master Architect is an object based CAD system which tightly integrates architectural modeling and drafting activities. The design elements within Master Architect have built-in architectural intelligence. The system includes a number of architectural oriented editing commands. The design elements are 'objects' which dynamically respond to these commands. This enables the architectural user to construct and dynamically edit a complex and realistic building model. Introduction

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Full text: content.pdf (1,157,432 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software development (0.026112) class.synthesis (0.025424) class.analysis (0.019438)
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Permission to reproduce these documents has been graciously provided by the Lund University and the Swedish Building Centre. The assistance of the editors, Prof. Per Christiansson and Prof. Henry Karlsson, is gratefully appreciated.


C.E. Firat, D. Arditi, J.P. Hämäläinen & J. Kiiras

Extended model-based master scheduling for building projects using advanced line of balance

Abstract: This study addresses a two-step approach to model-based scheduling using the Advanced Line of Balance (ALoB) technique. In the first step, a master schedule is developed by using a product model, a resource and cost model, and public databases such as Ratu files. In the second step, this model-based master schedule is refined by a project manager who injects additional project specific information into it. The objective of this paper is a methodology that can be used to set up a model-based master schedule of a residential building project and then to refine this master schedule to satisfy the conditions in a particular project. The paper introduces building construction information modeling, advanced line of balance before describing the process and structure of model-based master schedule. After a discussion about extending a master schedule into a usable schedule, the findings of a case study are presented. It is concluded that a two-step methodology to create an extended master schedule is feasible.

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Series: w78:2009 (browse)
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Can Ersen Firat, David Arditi, Juho-Pekka Hamalainen, Johan Stenstrand, Juhani Kiiras

Quantity Take-Off in Model-Based Systems

Abstract: In recent years, as Information Technology (IT) tools and Building Information Models (BIM) are adopted by more practitioners, it has become apparent that it is possible to have a faster and more efficient quantity take-off system. The efficiency of quantity take-off lies in the smart transfer of the information produced in the design process to construction. Existing BIM-based quantity take-off is performed in the design phase of a project. BIM-based systems provide a smart platform for information exchange between design and construction.A “model-based” system refers in this paper to a Building Construction Information Model (BCIM)coupled with a location-based scheduling process.BCIM offers an environment in the construction phase, where data are stored, updated, and reused via the evolving project libraries of a building contractor. BCIM is composed of three submodels:(i) a building product model that provides the sections and quantities, (ii) a building resource and cost model that provides activity lists and labour consumptions to calculate activitydurations, and (iii) a building process model that introduces the interdependencies of the activities.· In the location-based scheduling process, a preliminary master schedule is obtained automaticallyfrom an information database, and then improved by the planner to fit the conditions of the company and of the project. The use of Advanced Line of Balance (ALoB) is proposed in location-based scheduling.The objective of this paper is to introduce the principles involved in quantity take-off in a “modelbased” system as implemented by a contractor. The paper consists of three parts: (1) the “modelbased” system (composed of BCIM and ALoB) is introduced as the theoretical background; (2) the steps in performing quantity take-off in “model-based” systems are described; and (3) a residential construction project is used to test the proposed quantity take-off principles.

Keywords: building information modeling, BIM, model-based systems, location-based scheduling, quantity take-off

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Series: w78:2010 (browse)
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Christiansson P

IT in distributed open learning environments

Abstract: "The paper describes, accounts experiences, and analyses ongoing open IT supported education's at Aalborg University. The requirements and properties of distributed learning systems are explained as well as available IT-tools support and requirements on underlying application and user models. Pedagogical models are developed to support project organized problem based learning environments. Students are situated at different places in Denmark and meet in person once a month during a weekend seminar. New learning IT tools are introduced to support self study, project work, self tests, project delivery, and course administration. The open Master of IT education and IT courses in the Civil Engineering and Architecture and Design curricula are used as examples for discussions on course information content and structure, and personalized IT tools and their properties. Our conclusions are that we are only in the beginning of development of cross-disciplinary university courses in a global setting with highly communicative IT tools in contrast to traditionally open environments. It is also concluded that IT supported distributed learning provides us with excellent possibilities to advance the learning methodologies suitable for life long learning and to render existing courses more effective. There is a great need to raise the IT competence of the teachers to meet the needs for and carrying through of the changes in education on all levels. We will in the future see a closer natural collaboration between universities in course development and experience exchange."

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Full text: content.pdf (290,092 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.deployment (0.064533) class.education (0.052856) class.communication (0.041303)
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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


Edwin Dado, Reza Beheshti, Sander van Nederveen

IT education and utilization within the upcoming shared master of science in construction management and engineering in the Netherlands

Abstract: In March 2004, the Task Force Sector Plan presented their final report to the State Secretary of Educa-tion, Culture and Science. In this report, the three universities of technology (3TU) proposed how they aim to create a single federation of Dutch universities of technology by combining their education and research programmes in order to enhance knowledge valorisation. In addition, five shared Master of Science (MSc.) programmes - not yet offered in The Netherlands but considered to be essential for the Dutch knowledge economy - were proposed, including the MSc. Construction Management and Engineering (CME) programme. The MSc. CME programme, realized at the three 3TU locations, consists of two blocks: (1) a general block and (2) a specialization block. The general block covers the topics that provide a sound basis for further specialization at one of the three locations of the 3TU. Within the general block – but moreover in the specialization block offered in Delft – contains a large amount of IT education and utilization. This paper will discuss the overall programme of MSc. CME programme and the development process of the MSc. CME specialization in Delft, with a special emphasis on the IT related subjects.

Keywords: master programme, construction management, IT, education

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Full text: content.pdf (199,106 bytes) (available to registered users only)

Series: w78:2007 (browse)
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M Lo Prete, L Dal Cerro, V Bonora

“Canopée des Halles de Paris” Case study for an innovative digital approach to tender competition

Abstract: The traditional tender competition procedure embeds a series of negative aspects, linked to the use of 2D technical drawings that describe geometries and technological solutions of which an architectural project is composed. The technical language linked to orthogonal projections is no longer a good medium to describe contemporary architectural concepts: during the tender a potential incoherence generated by 2D representation may lead to a not accurate evaluation of costs, risks, and time. The goal of this study is to introduce an innovative concept of digital tendering, integrating the traditional set of 2D technical drawings into a 3D interoperable model based on the widely diffused IFC format, detached from specific commercial approaches. This implemented documentation will help construction societies to better comprehend the complexity of the technical solutions, through a pedagogic 3D model which contains all the information needed for economical evaluation and a series of direct links to the whole project documentation. “Canopée des Halles” project was approached during the PRO phase, which preceded the tender competition. During this period the company DECODE played an intermediary role, developing a 3D master model based on technical information and made it evolve through a verification and correction process. Once the model was completed, DECODE acquired the documentation for the tender and started to fill the 3D model with semantic information useful during the calculation phase. Then the geometries were linked to their specific 2D technical documentation and the whole master model was exported into an IFC interoperable format. Construction companies received from the Paris City Hall a dvd, containing the 4D model (3D geometry + information), the pdf documentation attached to this and the eveBIM viewer. Into this innovative approach eveBIM represented the pedagogical instrument able to increase the comprehension of the project and provide a technical support to the calculation process through a paper-less approach.

Keywords: Digital tender competition, IFC, Interoperability, Master model, ICT strategies.

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Series: w78:2011 (browse)
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Nassar K M, Beliveau Y

Integration of parametric geometric modeling and construction simulation

Abstract: In early ages 'Designing' of a building could not be differentiated from 'building' it, since the Master Builder was also the designer. With the increased complexity of design, this arrangement changed. Currently designing a building and constructing it are two different tasks. The description of design is done using drawings, whether in 2 or 3 dimensions, while construction operations is usually described by means of construction schedules. Three-dimensional details of building assemblies are often used for describing the design details. If we can describe the building details parametrically with construction operations only, then we can save time in developing assembly details and improve constructability. This paper describes a new approach to store design description of assembly details as intelligent objects. Each of these objects represents a building assembly. These assemblies are linked to a database of networks, that generically describe how the assemblies are built/drawn (i.e. the components used and the geometric/construction operations). A prototype system EASYBUILD is introduced.

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Full text: content.pdf (226,142 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.economic (0.027330) class.analysis (0.012254) class.software development (0.007903)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Raimondi A, Salvioni G

A construction product browser

Abstract: The World Wide Web contains a wealth of information from manufacturers of building products which needs to be gathered and reorganized in order to be used by designers. Currently there is a tendency to develop systems based on database architecture that require large amounts of structured data newly compiled from the sources, and it takes great effort to update the data in the database that changes with time. This process can be supported only by large and expensive organizations. In this paper we discuss the requirements and conceptualize an information system that knows where certain pertinent information is and helps the users to find it by means of a retrieval system based on natural and controlled querying language. Our system also helps the user decide between alternatives and lets him select only some information out of all the data that usually comes in a product’s data sheet. The program further allows the user to download the data and use it in his project. In order to allow the producers of building products to give information according to their own layouts without being forced into a rigid standardized layout, we propose an indexing system based on the application of blind labels (tags) to the existing source code (html) which describes the information about a product that is already on the Internet. The tags are based on the Master Lists and EPIC’s construction-product grouping. Each piece of information indexed by its own tag will be handled by a specialized software that will put it in the right place in our newly developed product data sheet. This mechanism avoids the construction of a centralized database, and replaces the need for it by accessing a series of indexed documents containing indexed information already on the Internet.

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Full text: content.pdf (278,398 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.collaboration (0.025719) class.represent (0.016246) class.store (0.013301)
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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.


Shen Q, Scott D

A web-based online postgraduate programme in project management

Abstract: The Department of Building and Real Estate of the Hong Kong Polytechnic University has recently developed and implemented a web-based online programme in project management. This programme meets the needs of professionals in the construction industry who wish to acquire new skills and insights as part of their continuing professional development without leaving their place of work for extended and/or repetitive periods. It allows such personnel to learn at their own pace in their own place, with faceto-face supporting workshops. Whereas academic staff members were responsible for the contents of subjects in the programme, a development team was formed to support them with the collection of content material, the development and transformation of the actual content, and instructional design advice on learning in the web-based environment, etc. This paper presents the experience of the team who has pursued the development of the programme into the realms of web-based distance learning. It describes the programme that has been developed, its successes, lessons learnt, and the overall theology that was developed for web-based learning for students of the programme. The opportunities for new methods of teaching and ways of presenting complex ideas are displayed. The use of technology to allow the introduction and innovative use of case studies and continuous monitoring of each student's performance are demonstrated.

Keywords: web-based, teaching and learning, master programme, projectmanagement

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Full text: content.pdf (822,519 bytes) (available to registered users only)

Series: itaec:2004 (browse)
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U. Walder, G. Glanzer, A. Merkel, R. Schütz, T. Wießflecker

Facility management data in disaster management

Abstract: Nowadays large real estates and infrastructural installations are managed using Computer Aided Facili-ties Management-systems (CAFM-systems). These systems are based on the graphical and alphanumerical base data of the building, as well as real-time data from master control systems and security installations. Even though a substantial number of rules and regulations exist concerning how the information is to be gathered and administered, there are still no standardised international norms in that area. Further, there are no provider-specific data and database structures on how to deal with the large amount of data, since the market is still far from consolidation and no single system has a market-dominating position. This is not a downfall in the daily routine of a facility manager, since most systems inte-grate all processes of the facilities management, but the incoherent data can cause problems when exchanging them with other applications or during benchmarking. Severe problems arise with the lack of standards in extraordinary situations when numerous im-portant decisions with major consequences have to be taken within a short period of time. In cases of fires, floods or terrorist attacks the base data of the buildings need to be readily available in an adequate format. Further these data should be constantly up-dated and integrated with real-time data from the Disaster Management System (DMS). The main challenges in this situation are locating and tracking rescue teams, the local information management and the communication between the on-site staff and the command centre. The Institute for Building Informatics at TU Graz in coopera-tion with the security industry is currently researching and developing a CAFM-based DMS (CADMS). In the following the individ-ual aspects and technical problems are outlined and first re-sults are presented.

Keywords: facility management data, indoor positioning, sensors, system integration

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Full text: content.pdf (796,487 bytes) (available to registered users only)

Series: w78:2007 (browse)
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