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Heinisuo M, Karstila K, Pehrsson R

Product modelling and data exchange for constructional steelwork

Abstract: "The paper includes summaries of three national development projects, which all deal with product modelling and data exchange of structural steelwork. Two of the projects belong to Finnsteel technology program, one belongs to Vera technology program and both these programs are organized by TEKES of Finland. In all the three projects product data models applying ISO 10303-11 (EXPRESS) and product data exchange based on ISO 10303-21 have been used to define the models and to carry out the data exchange between organizations and between disciplines. The views to structural steelwork have been different in all the projects. The first project is called SteelBase, the second FST-EXPERT and the third FinnST-1. The largest project, SteelBase (three years, 28 companies) was focused to the data exchange between the steel designer and the steel product fabricator and to the education of the creator and the end user of the product data. The second project, FST-EXPERT was mainly focused to the product modelling and to the data exchange between geometrical modelling, structural analysis and cost estimation i.e data exchange within the organization but between disciplines. The third project, FinnST-1 is scoped to the structural steelwork data exchange between organizations generally. FinnST-1 project includes mapping between the CIMsteel Integration Standards from the CIMsteel Eureka project and the Industry Foundation Classes from the International Alliance for Interoperability. All the projects include much basic studies within the field of product modelling, some new findings and a lot of experience for the people involved with the projects. It is believed, that this experience is a good starting point to the new century with its challenges. The most essential results of the three projects are presented and summarized in the paper. Some results are e.g. (SteelBase) evaluation of possible STEP based product models for steel structures, basic data definitions needed for the data exchange between the designer and the fabricator, and the effect of that definition to the CIMsteel standard (from R1.1 to R2.0), mapping of product data following the needs of different organizations, and the importance of the education for these new things. In FST-EXPERT project it is shown, that the mapping with some ""intelligence"" between the geometrical model and the structural analysis (FEM) model can be a powerful tool if neutral data files are used for the data exchange. The power means here total independency of the CAD-program and the FEM-program and moreover in this case the cost estimation and strength check can be integrated to the design process applying neutral STEP-files. Finally, FinnST-1 project brings all the work done in the other projects to the use of all the organizations involved into the building project. Also, the possibilities to perform the mapping between STEP-models are new information."



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Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.040417) class.software-software (0.035655) class.represent (0.025541)
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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

Karstila K, Pehrsson R

SteelBase - implementing product data exchange for constructional steelwork

Abstract: The paper describes the results from the Finnish SteelBase project in implementing standardised product data exchange for construction. The application area of the project is the exchange of constructional steelwork data from the structural designers to the fabricators. The enabling technologor the project are STEP product data technology emerging from ISO TC184/SC4 work, and the results from the European CIMsteel-project. The paper describes SteelBase by the methodologies used, developed implementation, and the achieved results and firseriences in constructional steelwork data exchange. Introduction The Finnish FINNSTEEL technology program aims at the promotion of steel construction in general, and more specifically at the decreasing of building costs and project lead times. The objective of SteelBase, a project within the FINNSTEEL framework, articular is to develop and implement neutral data exchange for constructional steelwork between the structural designers and the fabricators. Neutral, standard-based, product data exchange streamlines the information logistics of the design/manufacturing process, and increases the possibilities to exploit the design data in the downstream activities, like production planning. The enabling technologies The SteelBase basis its work on two efforts, namely ISO STEP standardisation work and European CIMsteel/Eureka -project. STEP product data technology (Standard for The Exchange of Product model data) has been developed over the years as an international standardisation effort in ISO TC184/SC4 Industrial Data committee. STEP technology is a comprehensive set of methods, standards and tools for realising the neutral exchange of product model data between computer applications. CIMsteel-project has defined a data exchange specification, so-called CIMsteel Integration Standards (CIS), for the exchange of constructional steelwork product data. In its developments CIMsteel has, on the other hand used STEP product data technolond on the other hand the CIS-standard will form the basis for the development of an international STEP data exchange standard or Application Protocol for constructional steelwork (AP 230). SteelBase status In its first phase SteelBase: 1) defined a data exchange specification based on CIS with some additional Finnish flavouring for e.g. section profiles and materials identification; 2) defined standard report types for constructional steelwork designs;3) developed a computer application, StBrowser, which is a general purpose browser for constructional steelwork product models. StBrowser allows for view and editing of steelwork product models, bill-of-materials report generation and conversions of the data into some additional data formats. StBrowser serves for the receiving of steelwork product data, and its exploitation.g. production planning and manufacturing by the fabricator. In the current, second phase of SteelBase the focus of the development is in expanding the usage of SteelBase data exchange by implementing additional data conversion facilities to the StBrowser, e.g. for the numerical control of machine tools. Also, EDIFACT and VRML converters are under consideration.



Full text: content.pdf (252,085 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.038700) class.software-software (0.026935) class.impact (0.015014)
Similar papers:
Sound: read aloud.

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.

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