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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.


Furusaka S, Kaneta T, Ohta M, Yamada K, Taira T

Development and management of a quality information system on construction site

Abstract: Many kinds of quality information are daily produced and shared among the engineers in a construction site. These information, usually stored in hand-written document or electric files, are not well reused for improvement of the project in the latter stages. This paper presents a method of sharing quality information to manage the useful knowledge created in the construction process. The supervisor gives written instruction about correction and approval as regards to the report from the construction manager. Agenda is processed in every meeting held weekly. These documents contain the knowledge of the supervisor, construction manager, and site engineers. The authors offered an electric format to memorize the quality information and developed a BBS system on the web to share the information in the project through the Internet. An application to a real building project will be also reported.

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Full text: content.pdf (291,473 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.collaboration (0.026218) class.store (0.012650) class.man-man (0.006533)
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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


G Guo, G D Larsen, J Whyte

Digital Interaction Patterns on Construction Projects: A Study of Dynamic Approval Processes

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Full text: content.pdf (658,326 bytes) (available to registered users only)

Series: w78:2013 (browse)
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Sinthawanarong K

Measuring construction performance using a comprehensive approach

Abstract: "This study presents an investigation and development of a construction performance measurement model. A literature review indicated that researchers have offered a variety of models in an attempt to examine construction performance but existing models may not be adequate to embrace a comprehensive measure. Literature reviews were used to develop a working structure for the development of a new conceptual model. There are generally four areas by which individual performance may best constitute overall construction effectiveness: Time, Cost, Quality and Safety. Various conceptual and application models are reviewed and their limitations are highlighted. A psychology-based measurement mechanism (ProMES) is proposed as the modelling environment. Basic components of the model were determined by questionnaire surveys and a review of literature. It was concluded that project progress variation, time delay, variances of labour and material cost, plant utilisation, quality procedure approval, non-conformance of products, and accident occurrence and investment index will be used in the evaluation model as performance indicators. To address the issues of reliability and feasibility, the model was computerised using Visual Basic on objective-hierarchical mechanisms and implemented in five participating construction sites. Results from a comparative study between the model and subjective measurement indicated that an output based on the newly developed model produces significantly better results."

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Full text: content.pdf (278,783 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.environment (0.024063) class.impact (0.023230) class.economic (0.014073)
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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


Sulaiman M J, Ng Kok Weng, Cher Dong Theng, Berdu Z

Intelligent CAD checker for building plan approval

Abstract: In construction industry, architects need to have a deep knowledge of the uniform building by law and the local council requirements before designing a building or a house. The process of applying his or her knowledge in terms of building by law interpretation is critical during the design stage. Due to enormous amount of bylaws involved, architects may design with some non-compliance to the by-laws. This mistake will be costly especially if it causes the building plan to be rejected by the municipal council or the fire department. The mistake will probably cause a significant delay in the completion of project thus leading to penalty and other costs. Viewing from the point of the approval authority, the personnel involved in approving building plans is also prone to make mistake in approving building plans that have non-compliance to the by-laws. Such mistake may cause great harm to occupants of the building and the responsible authority may be accountable for any mishap caused by the non-compliance. Hence the proposed system discussed in this paper intends to eliminate any errors in interpreting as well as checking for bylaws non-compliance directly from a CAD file submitted by an architect. This system directly reads in the building design CAD file before checking it's attributes and specifications against the building by-laws and will report any non-compliance to the user.

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Full text: content.pdf (119,236 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.legal (0.077622) class.social (0.013925) class.strategies (0.007529)
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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.


Vassileva S

An approach of constructing integrated client/server framework for operative checking of building code

Abstract: "The paper presents results from number of investigation over problem of the using of an integrated client/server framework for an automated code-checking system. The changing nature and the complexity of building codes leads to delays in the design and the construction processes. The designer must assess which codes are applicable to a given project. Through a similar process must go an inspector and there can be inconsistencies in interpretation of a given section of the code between different inspectors. After that, he must sort the codes through potential ambiguity in the code provisions. The process of design checking and approval can prolongs the construction and delays the operation of a facility. Automating this process can alleviate the inconsistencies and delays with manual checking. Most previous studies on the process of checking of building code have focused on the processing of design codes for conformance checking. In the present article is proposed to add additional criteria of a building model. On the base of that are summarized representation of code provisions. The structure and attributes of a product model and building code model needed to provide design information are examined by a code-checking program. This program can read the design data and reorganize the information in a form that can be analyzed and compared to the model of the building code. The building code model is described as a mapping of building code provisions in an object-oriented framework. For automation of the process of checking of a building design for compliance to a building code document is developed a program for analysis of a building design. As a design environment is used AutoCAD. Building model is based on IFC Release 1.5 and on additional layer of building component objects. This layer is created with semantics corresponding to the IFC specifications. The designer during the process of design can send the building model to the code-checking program. A program in Auto Lisp extracts the IFC information from the AutoCAD database and converts the information into IFC EXPRESS file. The building code model is based on the same structure as the IPC project model hierarchy. The code-checking program reads in a stream of IPC data to populate its database of building components. The program reads in a stream from a building code file, which is mapping from the text of provisions of a building code document to an EXPRESS file. The code-checking program is on the server of client/server framework. This program reads in a building code EXPRESS file and populates a data structure containing instances of the building code provisions. Finally, the system determinates if a set of provision is relevant to the specific building component associated with a specific space."

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Full text: content.pdf (2,085,356 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.060049) class.represent (0.025494) class.software development (0.024263)
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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


Wong M C, Li H, Shen Q

Electronic building control: an IT-enabled re-engineering process

Abstract: Information technologies have been widely adopted to streamline the document management processes in the construction industry such as drawing production, contract management and material control. In this study, building plan preparation, submission and approval processes are examined in an operational approach and critically reviewed to explore how the process of re-engineering under the electronic environment is conducted. References are drawn from the latest development of various IT application packages in the construction industry to investigate their capacities for re-engineering the involved processes. Through a real case study of the Buildings Department (BD) of the Hong Kong SAR Government, the technologies and methods involved in the re-engineering process of building control are described. Recommendations and conditions for a successful implementation of IT enabled building control process are also summarized and concluded.

Keywords: building plan submission, re-engineering, building control

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Full text: content.pdf (759,645 bytes) (available to registered users only)

Series: itaec:2003 (browse)
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