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Message development in the building process

Abstract: New communication media offer new opportunities to exchange information between participants in a building project. A case study was done of a specific building project from the viewpoint of a company that produces concrete floors. An executable simulation model was used to create a formal description of the information exchange process. The output of the simulation is an activity schema, a message exchange diagram and a list of messages. The schemata give insight about the information flow and are a resource for developing a strategy for the introduction of electronic communication. The messages serve as a starting point for selecting a standardized electronic message or developing a special one.

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Full text: content.pdf (1,214,000 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.022605) class.synthesis (0.022488) class.collaboration (0.015924)
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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.


Alshawi M

Objects definition and the life cycle of objects

Abstract: In order to produce a complete and efficient objects definition for an integrated environment, it is important that objects are considered within a well defined environment. Objects are subjected to a number of phases during their life cycle depending on the environment within which they are serving. This paper briefly explains a proposed structure for an integrated environment within which a new concept for object life cycle is introduced. The new concept is illustrated in an elements specifications application.

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Full text: content.pdf (1,215,425 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.environment (0.037780) class.processing (0.025091) class.economic (0.011972)
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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.


Amor R, Hosking J, Mugridge W

A declarative approach to inter-schema mappings

Abstract: The requirements for the specification of mappings between tools in an integrated and interactive design system are described in this paper. The declarative mapping language, VML, is introduced. VML allows a high level, bidirectional specification of mappings between two arbitrary schemas. To illustrate the utility of VML, a demonstration system consisting of plan definition and code conformance tools is integrated via a common data model using VML mappings. The VML mappings are capable of handling both relational and object-oriented style schemas as well as interactive and batch style design tools. We illustrate the use of VML to specify correspondences between classes, conditional application of correspondences, different styles of equivalence, initialisation conditions as well as method handling for interactive systems.

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Full text: content.pdf (1,068,779 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.030558) class.software development (0.027038) class.represent (0.019168)
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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.


Appelqvist I, Keijer U

Building integrity a prototype for an it support system

Abstract: The industrialization of the building industry requires a profound understanding of the interactions between building parts, elements, spaces and systems. The industrialization also causes an increasing number of actors and suppliers to be involved in the building process. The problems concerning interactions are not limited to technical issues. The organization of the process, as well as responsibilities and liabilities of consultants, subcontractors and other actors of the process contribute to the growing implications that constitute the problem in its whole. Neglecting the interaction problems could affect what has been called the Building Integrity problem, BI. The first part of the research has been concentrated to formulate the problem and the key questions to be answered. A conceptual schema describing the BI problem tentatively has been outlined. The schema includes some interesting classifying attributes, e.g. the functions of a building, building parts, spaces, actors and the causes of building defects. A so called "defect model" has been chosen as a base for an IT Support System. The system aims at supporting certain actors to detect BI problems in the building process. A prototype system is currently developed and is described.

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Full text: content.pdf (1,206,229 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.029112) class.social (0.016984) class.represent (0.013808)
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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.


Arnold J A, Teicholz P

Modeling and usle of component information in the process industry

Abstract: This in-process research project investigates the life-cycle information requirements for the components3 which are installed in process plant facilities. We have done this to gain insight into existing standards efforts and to understand the content requirements for the development of standard information models that represent such components. This work seeks to understand how these information models may be used to improve business and technical work processes through the development of software applications which support information sharing between component design objects rather than information exchange between design documents.

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Full text: content.pdf (1,424,261 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.026230) class.commerce (0.019810) class.processing (0.019388)
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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.


Assal H, Eastman C

Engineering database as a medium for translation

Abstract: In this paper we describe the translation facilities as a component of EDM-2 database. We introduce a new approach to translation that is different from the traditional translators in databases and the standard neutral file approach. First, we define design views, which are different from database views in that they allow manipulation of data, and they represent the same object or information in different formats. Second, we define object structures that capture the different representations of objects and define the relationships among them. The two main relationships here are the specialization lattice and the composition lattice. Third, we describe the basic steps of the translation process and generalize the common ones. We provide facilities for developing translators that take advantage of this generalization. We present an example of the most common representations in engineering design (IGES and DXF) to illustrate the various steps and structures in our model.

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Full text: content.pdf (1,318,897 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.026130) class.synthesis (0.017787) class.store (0.011500)
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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.


Augenbroe G

The combine project: a global assessment

Abstract: The outcome of the EU funded COMBINE project will be assessed. The objectives of COMBINE (Computer Models for the Building Industry in Europe) are to deliver the first examples of a future generation of intelligent integrated building design systems to engineering design practices, with the emphasis on the energy and HVAC disciplines. The objective is accomplished by embedding proven IT solutions for data integration in a system architecture that enables the information exchange among the members of a building design team. An overview of the approach of the 70 man years effort between 1990 and 1995 by a consortium of 11 R and D institutions across Europe is presented.. A global assessment of the overall approach and the use of available product data technology that have led to three prototypes of integrated building design systems is given.

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Full text: content.pdf (888,136 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software development (0.012897) class.represent (0.011783) class.roadmaps (0.011353)
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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.


Chen S E, McGeorge W D

A life-cycle decision-information model accommodating complexity in project processes

Abstract: Fragmentation and barriers to information flows between project participants has been a major obstacle to productivity quality in the construction industry. Strategies to overcome this needs to contend with the interaction between numerous project participants which generates considerable complexity in project dynamics. A “soft” technology approach has been advocated to managing the coordination and communication of project participants. A dynamic framework to provide integrated decision support to project participants has been previously described. As an extension to the development of this framework, this paper describes a conceptual approach which perceives a project as an integrated collection of decisions. The project development process .is modelled as a dynamic decision-information flow system operating across the project’s life cycle. The recognition of individual decisions as system components allows information sharing in a near red-time context, which would facilitate an integrated project process. Feedback processes in the model provide a framework for accommodating complexity in the project process.

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Full text: content.pdf (794,238 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.066513) class.man-software (0.015397) class.communication (0.011923)
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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.


Christensen L C, Christiansen T R, Jin Y, Kunz J, Levitt R E

Extending enterprise modeling beyond engineering - a life cycle model of hydraulic systems

Abstract: In our work on enterprise engineering we are concerned with developing a fiamework and methodology for modeling real world enterprise. Our primary concern is that the resulting enterprise models should give insight into the operation of today's enterprise, and allow systematic studies to predict likely effects of proposed changes. Last year, at the CIB W78 workshop in Helsinki, we presented an initial overview of CAESAR, an architecture for enterprise modeling in the AEC industry. CAESAR addresses the Objectives, Product, Process and Organization (OPPO) aspects of enterprise, and covers the complete life-cycle, including requirements specification, conceptual design, detailed engineering, approval, fabrication/ installation, operation, maintenance, and decommissioning. This year we apply the CAESAR framework to develop a simple model of a hydraulic system for oil production facilities. Such hydraulic systems are used for a variety of control tasks on offshore platforms, where different users have a range of different functional and operational requirements. We use the hydraulic system model to derive measures of coordination load, which may be used as input to simulate project execution as a set of information processing tasks. The Virtual Design Team OT) discrete event simulator is used to predict changes in development schedule and life-cycle cost due to changes in scheduling and execution of design and development.

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Full text: content.pdf (1,091,173 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.017132) class.impact (0.011087) class.economic (0.007888)
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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.


Cutting-Decelle AF

Standardization in product and process data modelling : the ISO step and mandate standards' contribution to'the integration of the life-cycle of buildings

Abstract: In this paper, the data exchanges during the construction process will be analysed through the presentation of the specificity of the profession, -and the description of the construction process, by means of the merent related models. We will then present the two standards, STEP and MANDATE, both currently under development, first in their main features, then by the concepts they will be able to provide. We will focus on a presentation of MANDATE, since one of the models provided could be useful for the representation of the life cycle of buildings. This paper will end with some perspectives for the building construction domain, based on the integration of the whole construction process.

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Full text: content.pdf (1,962,640 bytes) (available to registered users only)

Series: w78:1995 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.049820) class.processing (0.023990) class.standards (0.019855)
Similar papers:
Sound: read aloud.

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.


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