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Goncalves R, Pimentao J, Vital M, Sousa P, Steiger-Garcao

Integrating applications for the construction industry using a step-based.integratlon platform (sip)-seeking a life-cycle-oriented modelling -

Abstract: International building industry has not still achieved a high degree of integration and automation in the past years. Up to now, the use of Information Technology (IT) in outdoor applications, specially in the building industry and automated construction, should have more attention. For that reason existing architectures and modules from other industrial areas can be adapted to the special requirements of the building industry. Because the use of standards in the modelling process can help the integration task, a STEP (IS010303) based platform for integration of applications (SIP toolkit), created by UNINOVA in the ambit of an European project, was developed. Several managerial and engineering applications were already integrated in industrial environments using SIP, including the construction one. Demonstrations are available showing achieved results. The paper mainly concentrates on the following aspects: -Discussion about integration of software tools in industrial environments, under standardisation of information modelling. -Presentation of the internal architecture of the platform, and the global information system architecture implemented. -Comments about the results and experience acquired during the implementation of SIP in R and D projects and in industrial companies, specially in the European Project for road construction - RoadRobot.

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Full text: content.pdf (1,190,510 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.environment (0.028841) class.impact (0.020256) class.software development (0.016624)
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Permission to reproduce these papers has been graciously provided by the Stanford University, USA. The support of the editors, particularly Prof. Fischer is gratefully appreciated.


H Deshpande, H Leslie

A STRATEGY TO DEVELOP A FRAMEWORK FOR DISTRIBUTED INFORMATION MANAGEMENT IN THE AEC-FM INDUSTRY

Abstract: This paper reviews and analyses the problem of distributed decision-making in the Architecture, Engineering and Construction and Facility Management (AEC-FM) industry and at the operation and management of a supporting information system. These problems include uncoordinated information gathering, reporting and management, as well as multiple redrawing and re-keying of information, which lead to unnecessary costs, increased errors, and misunderstanding. While major advances have been made since CIDA articulated these problems fifteen years ago, particularly in relation to the Building Information Modelling (BIM), its call for easy access to standardized information relevant to each industry sector is yet to be fully answered. While individual industry sectors and organisations have made significant advances in their respective areas of concern, significantly less progress has been made when it comes to the access and exchange of information between sectors or over the life-cycle of a facility. In order to advance the agenda, this paper first takes a comprehensive look at the way the project decision-makers access, process and exchange information, and at how that data is managed over space and time. The paper then describes a strategy to develop a framework for an integrated system for information management that is comprehensive and well integrated, addressing the needs of all sectors of the industry and all phases of the facility life-cycle. The strategy also makes it possible to bring together all the diverse developments such as BIM, IFCs, IDEF, IFD, in the framework, thus helping to manage the information in all its myriad aspects. As many of the concepts raised here are similar to but slightly different from those in current circulation, the paper identifies and describes a number of key concepts used to formulate the strategy. The paper describes the proposed system in functional terms and outlines the simple demonstration packages within it that illustrate the wider picture and provide a context within which individual interest groups can act.

Keywords: Distributed information management, Performance-based project data, Product/Process data management. BIM

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Full text: content.pdf (139,053 bytes) (available to registered users only)

Series: w78:2011 (browse)
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Halfawy M R, Froese T

Modeling and implementation of smart AEC objects: An IFC perspective

Abstract: Smart AEC objects are an evolutionary step that builds upon past research and experience in AEC product modeling, geometric modeling, intelligent CAD systems, and knowledge-based design methods. Smart objects combine the capability to represent various aspects of project information required to support multidisciplinary views of the objects, and the capability to encapsulate "intelligence" and "knowledge" by representing behavioral aspects, design constraints, and life cycle data management features into the objects. An example implementation of smart objects to support integrated design of falsework systems is discussed. The paper also discusses the requirements for extending existing standard industrywide data models, specifically the Industry Foundation Classes (IFC), to support the modeling of smart AEC objects.

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Full text: content.pdf (300,485 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.027186) class.standards (0.020734) class.software development (0.016060)
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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.


Hannus M, Jarvinen H, Astrom G

Exchange of product data of prefabricated concrete structures

Abstract: As part of efforts to adopt manufacturing automation in a scattered organizational structure the Finnish precast concrete industry has initiated the development of a number of solutions for data exchange. Guidelines concerning various aspects of using computers in the design/manufacturing process were defined in a manual which was widely distributed to involved parties. Standardized neutral file formats for data exchange between dissimilar computer systems were developed for three kinds of data: 1) drawings, 2) tables (e.g. bills of materials) and 3) product model -based data. Translator programs were developed for a number of common CAD-systems as well as a set of software tools to the users of standardized exchange files and software developers. The result of these developments have been widely adopted by fabricators, designers and software developers.

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Full text: content.pdf (894,706 bytes) (available to registered users only)

Series: w78:1991 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software-software (0.038792) class.represent (0.028338) class.impact (0.015560)
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Permission to reproduce these papers has been graciously provided by Eindhoven University of Technology.


Hannus M

Implementation of object oriented product model applications

Abstract: The paper describes implementation aspects of object oriented applications using different software tools such as a CAD-system, a relational data base management system and an object oriented programming language. The different implementations are based on a common generic product model and are integrated by means of neutral file transfer. The modules make up a toolbox from which various specific applications can be derived by adding application specific subclasses. The described development aims to provide steps along an evolutionary path from the dominating design tools of today towards the envisioned object oriented systems of tomorrow.

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Full text: content.pdf (1,095,442 bytes) (available to registered users only)

Series: w78:1991 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software development (0.066597) class.bestPractise (0.030391) class.education (0.020374)
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Permission to reproduce these papers has been graciously provided by Eindhoven University of Technology.


Haugen T

Integrating documentation for building .operation and maintenance in planning and design

Abstract: A general platform for a lifelong database is fundamental for the integration of information between design and management. Documentation from design as part of a facilities management system is necessary to retain the technical and functional quality of a building through its lifetime and to reduce the lifecycle costs. The use of computers have given us the opportunity of reducing the gap between design and management, even if it so far has tended to reinforce rather to weaken the organizational fragmentation that already exists. This paper focus on 10 important aspects for the development of computer integrated systems: Define the need for information in different management organizations; Avoid unnecessary information; Design simple systems; Develop a general platform - a lifelong database; relate to common standards; Produce the necessary information for operation and maintenance in design and construction; The implementation of an automated system demands a working manual system; An accurate database; A logical way of updating the database information and Link data to graphics.

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Full text: content.pdf (2,426,901 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.store (0.056488) class.synthesis (0.008424) class.economic (0.007150)
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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.


Hauser M, Nollau C, Scherer R J

Intelligent design tools as product model interfaces

Abstract: Concurrent engineering is understood as a methodology that can be used to increase quality and reduce design effort and time-to-market of a product. Main aspects of concurrent engineering are information sharing among multiple design agents and problem solving actions. Associated techniques are product models and intelligent design tools. In the paper the interrelationship of product modelling technology and intelligent design support is reviewed. A practical contribution to concurrent engineering by using design tools as intelligent interfaces to product models has been done by the authors. The paper describes the concept and prototypic implementation of two knowledge-based design tools in the domain of structural design. The tools form integrated parts of a design environment linked via a central product model.

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Full text: content.pdf (194,267 bytes) (available to registered users only)

Series: w78:1996 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.035359) class.man-software (0.027242) class.represent (0.016372)
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Permission to reproduce these papers has been graciously provided by the University of Ljubljana. The assistance of the editor, Prof. Ziga Turk, is gratefully appreciated.


Hegazy T, Moselhi O, Fazio P

Managing construction knowledge in patterns: a neural network approach

Abstract: Neural networks are AI-based computational tools with powerful capabilities of effective capturing and re-use of domain knowledge that are inherently implicit. This paper describes the modelling capabilities of neural networks with respect to construction problems, emphasizing the advantages associated with their representation of knowledge in the form of patterns. Several aspects related to proper management of knowledge are addressed for the purpose of developing practical and more reliable neural network models of complex construction problems. These aspects include: 1) problem structuring and patterns formation; 2) knowledge acquisition and data validation; 3) preparation and transformation of acquired data; and 4) analysis and interpretation of network state of knowledge. Guidelines pertaining to these aspects are provided along with considerations for modelling with noisy data and under high degree of uncertainty. The issues discussed are illustrated through a case study of a neural network for bidding decision support, developed based on knowledge acquired from contractors in Canada and the US. The case study demonstrates neural network modelling and illustrates the benefits gained through better management of acquired knowledge.

Keywords: neural networks; knowledge acquisition; construction; information technology; bidding strategy

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Full text: content.pdf (644,899 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.


Heinisuo Markku, Jenu Markku

Knowledge based design tool of steel structures including economical and structural aspects

Abstract: The paper deals with a knowledge based expert system (KBES) developed for the design of structural steel joints. The KBES can be used for the selection of suitable joints taking into account the expert knowledge stored into the database. The expert knowledge is so far shallow and it contains force transmitting abilities, fabrication and erection cost differences of joints. The KBES is used also for the choosing of suitable values of joint parameters by taking into account both generic rules (appearing in the codes of practice) and specific rules of individual joints and the combinations of both of these rules. The KBES suggests also local analysis models of the joints. The KBES gives an estimation of cost of the whole skeleton by combining the product model (PM) of the material entities and the cost database. The product model for the analysis of the whole steel skeleton is also proposed by the KBES. The PMs are made following IS0 10303, so we are working in an open environment.

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Series: ecce:1997 (browse)
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Henrik CJ Linderoth, Mattias Jacobsson

UNDERSTANDING ADOPTION AND USE OF ICT IN CONSTRUCTION PROJECTS THROUGH THE LENS OF CONTEXT, ACTORS AND TECHNOLOGY

Abstract: In the literature on construction related ICT no distinction is usually made between ICT use in the permanent organization and the temporary organization forming the building and construction projects. By drawing on the rich body of literature on organizational and managerial aspects of ICT the aim of the paper is to investigate how the interplay between contextual elements, actors’ frames of reference, and the ICT influence the adoption and use of ICT in building and construction projects. This objective will be pursued by an analysis of an ongoing study of ICT use in the Swedish building and construction sector, including semi-structured interviews and an ethnographic inspired study of a partnering project worth 50 million €. It is concluded that project based mode of organizing, with the prime focus on time and costs, creates a conflict with the process of introduction and development of ICT use that is characterised by ambiguity and indefinite duration in time that goes beyond the termination of a project. Unless immediate benefits are perceived by the adoption and use of an ICT application, it will not be used. This conflict can probably not wholly be solved, instead the industry has to learn to live with it and create spaces for innovation of ICT-mediated changes.

Keywords: ICT, adoption, use, organizational change, building and construction industry, temporary organizations

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Series: w78:2008 (browse)
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