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Debras P, Rezgui Y

Software systems for the integration of documentary engineering within a construction project

Abstract: Numerous documents of diverse nature are involved in the construction process. Some of them such as building codes, examples of technical solutions, computation rules, define the legal context of a project. Others like technical specification documents or bills of quantities are generated by the engineering activities and often have a contractual importance. Quality of the laters may be measured by their coherency with the regulation, with the documents previously approved, but also by their coherency with the construction project itself through the absence of errors, omissions or redundancies. Once elaborated, these documents should also prove ability to be used by various actors with specific needs or requests. We describe here our approach to manage the production of these documents in tight connection with the engineering entities describing a construction project. Such a connection is based on a conceptual model of the project through its various systems and entities as proposed within the STEP framework. Such a connection relies also on a formal representation of the documents, practically SGML Document Type Definitions, and on a set of document templates linked to the construction project model and from which the project documents will be derived :from a global set of documentary items, we will only retain the relevant sections towards a given project. Then we present a software platform we develop to operate such an approach. This platform encompasses various modules taking in charge the elaboration of project data models according to the Express-G methodology, supporting the production of SGML DTDs and associated documents templates, providing some frames and facilities to link the project model and the document templates.

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Full text: content.pdf (1,572,450 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.legal (0.045495) class.store (0.018764) class.synthesis (0.017579)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Debras P, Zarl A, Amar V, Poyet P

The distributed information service in the VEGA project: an approach towards the harmonisation of STEP, SGML and EDIFACT informationstandards for the support of integrated and distributed construction projectinformation systems.

Abstract: Over the past two decades, the complexity of engineering projects has increased. In such a context, havingaccess to the right information at the right time is often crucial. In the area of Information Management,numerous efforts have already been made under the auspices of various major institutes towards theelaboration of Information Standards. Whether it be STEP for Product Data representation and exchange,SGML for documentation structuring and support or EDIFACT for Electronic Data Interchange, thesestandardisation efforts all address complementary aspects related to the representation and communication of engineering project information. However, both at the conceptual and technological levels, end-usersnowadays face a lack of integration among these various existing or emerging Information Standards.Building upon the on-going specification and implementation of a CORBA based middleware layer allowingthe distribution of any STEP SDAI models, the Distributed Information Service of the VEGA EuropeanEsprit Research project addresses the integration and distribution of construction project information systemsat two different levels. First, the conceptual level is concerned with the elaboration of STEP EXPRESSproduct data models supporting SGML documentary models and documents but also EDIFACT messagesmodels and messages. The implementation level is then concerned with the development of dedicatedconverters supporting the back and forth translation of SGML documents and EDIFACT messages towardsthe STEP format, finally providing a remote access to any kind of information for all the actors involved in a construction project.

Keywords: Distributed Information System, STEP, SGML, EDIFACT.

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Full text: content.pdf (131,579 bytes) (available to registered users only)

Series: w78:1997 (browse)
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Debras P

Construction application of a gen-network : uniform access to standards, products and company information

Abstract: "Facing an increasing competitive environment where flexibility and adaptability to change are the obliged route to success, building and construction companies have to continuously renew their working habits while keeping business processes under quality, time and cost control. In the Architecture, Engineering and Construction (AEC) domain, the wide diversity in terms of the object built, but also associated to the geographical dispersion of actors and building sites makes such an agility even more crucial. Considering the design and tendering phase of a construction operation, the architects and construction engineers have to efficiently select the manufactured products that will best suit the project while complying to its numerous constraints. Beyond the functionality, performance and cost characteristics, a suitable product has also to conform to the applying regulations and standards, be eventually accompanied with a corresponding technical agreement, offer acceptable delivery solutions on the building site. Moreover, once identified within a manufacturer catalogue, the product has to be integrated into the architect or engineer application desktop, whether it be a CAD, specification writer or quantity take-off application. Addressing these needs, the Global Engineering Networking (GEN) initiative is promoting the reuse of company internal and external engineering knowledge through the emergence of new kind of global market places where actors publish and retrieve on-line a wide range of engineering information and services. In particular, The Construction Pilot in EP 22 284 GENIAL project demonstrates over the AEC domain, the relevance of new generation of Information Technology infrastructures supporting the erection of Value-Added Service Provider (VASP) sites that materialise the GEN vision, i.e. allowing information and services to smoothly be retrieved where required whilst the succeeding company is concentrating on its core competencies. With such an infrastructure, whether it is through material, performances, manufacturer, regulation or price discrimination, the appropriate component, document or service is rapidly and cost effectively brought on the designer desk for the best value of the overall project. On the other side of the communication pipe, the supplying partner gains the opportunity of reaching an enlarged audience as IT now commonly break any geographical distance. In practice, three major information publishers and a building contractor in Europe initiate the GEN network in the AEC domain through the erection of VASP sites offering product, company or document related information. User queries are governed by various standard (EPIC, UNICLASS) or corpus specific (BATIBASE, EDIBATEC) classification systems. Relevance of the overall approach is demonstrated through the presentation of a large variety of such queries for the various information corpuses used : Techcom company and product information, BIC company, product and document, REEF regulation documentary corpus or EDIBATEC product information."

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Full text: content.pdf (748,881 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.legal (0.032376) class.retrieve (0.019963) class.roadmaps (0.012591)
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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


McEvatt, W.S.

Modular Co-ordination and the Design Process - A Review of the Documentary Bases

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Full text: content.pdf (907,358 bytes) (available to registered users only)

Series: w78:1986 (browse)
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Rezgui Y, Debras P

An Integrated Approach for a Model Based Document Production and Management

Abstract: The primary aim of the research presented in this paper is to provide pragmatic solutions to the problems of integrity and consistency of document based information, describing a building throughout its life cycle. The research demonstrates the computer-aided generation of project documents via a construction project data model. The first research activity involved the development of a Construction Project Reference Model (CPRM) and a Document Reference Model, from which various Applied Document Type Models can be derived. The work concentrated on the French Full Specification Document: the CCTP (Cahier des Clauses Techniques Particulières), which is generated during the detail design stage. A generic Association Model was developed and used to index the CPRM’s concepts to the CCTP’s documentary elements supporting their description. Finally, the mechanisms enabling the generation of the project CCTP from the proposed structured reference CCTP are described. This research, which through the DOCCIME project involved a building research centre (CSTB), an engineering company (OTH) and a software house (O2 Technology), is ongoing (both in the Information Technology Institute of Salford University and CSTB) and primarily aims to develop and define a more generic platform supporting all forms of model-based information in the distributed and multimedia environment.

Keywords: Data Model, SGML, Computer Integrated Construction, Full Specification Document.

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Full text: http://www.itcon.org/1996/1 (available to registered users only)

Series: itcon:1996 (browse)
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