Coding system for act advanced building information system
Abstract: Since fiscal 1983, the Ministry of Construction has been implementing a five-year comprehensive technological development project with a theme of " Development of Systems for Advancement of Construction Technologies through Utilization of Electronics." In this large R and D project, research on Integration of Building Product ion Information has
been conducted on software-related technologies and integrated building information system called ACT, Advanced Construction Technology, has been
established as a final result.
ACT system consists of several standardized sub-systems including
classification code, computerized building model, database network, interface information and advanced production images toward 2000. Of those results, this paper summarizes the basic concept of standardized ACT coding system which should be utilized by various kinds of construction-related organizations throughout the building production phases from planning to use. It is yet on conceptual stage but the basic structure of individual tables are fixed.
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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.
Vasiliki Kondyli, Mehul Bhatt and Timo Hartmann
Towards People-Centred Precedents for Parametric Design: The Case of Wayfinding in Large-Scale Public Buildings
Abstract: Large-scale public buildings need to ensure an effective wayfinding performance for different user groups. Recent precedent based design approaches take spatial cognition into account by analysing the visuo-locomotive experience of users with the aim to interpret their behaviour and integrate it into a people-centred design. The paper focuses on the process from the analysis of precedents and the visuo-locomotive experience to the definition of design constraints that can be embedded into a parametric design for wayfinding. Primarily, we pursue a qualitative analysis of the visuo-locomotive experience of wayfinders in a healthcare built environment, with the use of cognitive-assistive and immersive/ virtual reality technologies. The outcome, presented through immersive reality, is correlated with the morphological analysis of the space and leads to precedents evaluation about design for wayfinding and the definition of new design constraints. The process is approached through an example, the environmental aspect of visual range. We conclude that this practice can overcome some of the experience based design practices of today but is not yet ingrained in the architectural and engineering design processes of public buildings.
Keywords: Precedent Based Design, Immersive Reality, Spatial Cognition, Wayfinding, People-Centred Parametric Design
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Weise M, Katranuschkov P, Scherer R J
Generalised model subset definition schema
Abstract: The idea of a shared product data repository that can be efficiently used in distributed concurrent engineering environments takes practical shape with the ripening of the IFC platform. However, structured methods for defining and deriving different partial model views that can easily be used by domain-specific applications are not yet available. This paper presents a generalised model subset definition schema (GMSD) which tackles many issues related to partial model retrieval and the use of domain-specific views. The schema, defined in EXPRESS for consistence with the IFC project model, contains two subparts: (1) constructs supporting the dynamic selection of object instances in model server queries, and (2) constructs enabling the development of view definitions that can be used as permanent part of a model server environment, to support the automated derivation of discipline-specific model subsets for architectural or structural design, facilities management etc. Discussed are the requirements that have governed the development of GMSD, its basic concepts, a prototype server/client implementation and first test-bed results. The latter indicate the great potential of the suggested structured approach for the definition of appropriate model subsets to improve the amount and quality of the exchanged data between actors and applications.
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Permission to reproduce these papers has been graciously provided by the University of Auckland. The assistance of the editor who provided the full texts and the structured metadata, Dr. Robert Amor, is gratefully appreciated.
Willems P H, Tolman F B
Semantic topology: the management of shape definition
Abstract: Over the last decade Computer Aided Design (CAD) systems have found their way in
the building industry and have become a mayor tool for defining the shape of a prod-
uct. However, CAD systems still do not really seem to aid the design process during
all its stages. They fail to assist the early design phases, where shape definitions are
not fixed yet, but exist stilr as roughly sketched contours.
This paper investigates shortcomings of the state of the art CAD-systems, with regard
to their application in all design stages, especially within the building industry. A
new approach for shape definition is intrduced. This approach, called ‘Semantic
Topology’, should be able to bridge the gap between advanced product model struc-
tures and conventional geometric modelling. ’
This implies bringing in features for: - adjusting the tolerancing level,
eg, a liberal tolerancing level in the early design stage ending in the accepted
manufacturing tolerances after the completion of the final design.
defining shape constraints,
shape constraints should clearly define the modelling freedom to define a cer-
tain shape. This feature is particular important for realising concurrent engi-
modular structures, in contrast to monolithic structures, are essential to ma-
nipulate product models, standard part libraries and very large shape models.
a consistent shape decomposition helps to integrate shape definition with
It is insportant to stress that Semantic Topology does not introduce a new kind of
geometric modelling, yet it acts as an intermediary layer between a product model
kernel and a geometric model.
I making geometrical structures fit for modular handling,
- shape decomposition support,
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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.
Yifan Gao, Vicente A. González and Tak Wing Yiu
Serious Games vs. Traditional Tools in Construction Safety Training: A Review
Abstract: For workers, the exposure to on-site hazards can result in fatalities and serious injuries. To improve safety outcomes, different approaches, namely traditional tools (TT), and innovative tools such as serious games (SG), have been implemented into the construction industry. However, evidence suggesting which one is more effective is not apparent. To bridge this gap, a systematic review was conducted to evaluate the literature on TT and SG in this study, and the strengths and weaknesses between them were discussed. The literature findings suggest that the conclusion regarding which one may be more effective is yet inconclusive due to the limitations of existing studies. However, it is noted that the overall performance of SG seems to be superior in several technical aspects mentioned in this paper compared to TT. Based on the findings of this research, we could see the implication that SG may have the potential to become an effective approach for delivering safety training in the construction industry.
Keywords: Construction, Safety Training, Serious Games, Traditional Tools
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Yum K-K, Drogemuller R
Managing dynamic life-cycle-dependent buildingobjects in a distributed computing environment
Abstract: Building and construction business processes involve various stakeholders located indifferent locations over the life cycle stages of buildings. In order to develop anyautomated solutions for improving these processes, there is a need to develop a flexibleframework that can deal with two important issues:(a) common data for sharing and access across networked computers over time;(b) management of data for the protection of rightful access and for the reduction ofinformation overloading.While there had been many attempts in the past to provide "logical" industry informationframeworks for integration, they proved to be difficult for a "fragmented" industry like theconstruction industry to adopt. For any integration framework to be useful for collectiveimplementation, this paper argues that the AEC (Architecture, Engineering andConstruction) business/enterprise views should be captured in an open interoperablearchitecture. The gist of the business/enterprise view point is that users can play variousroles (owner/operator, architects, etc.) at various life cycle stages (briefing, conceptualdesign, detail design, construction, operation, etc.); and through these roles, users canconnect to various building model servers and various software tools. Embedded in thisbusiness model is a simple and yet powerful threaded relationship "users - business rolesand life cycle stages - tools and data". It is powerful because it supports a generic datamanagement regime: users can select various permissible roles in various life cycle stagesto access legitimate tools and data within various building model servers. It is simplebecause it is compatible with today's network operating system login procedures and thepassword protection mechanism of files and folders. As people, end users and developersalike are familiar with the basic paradigm of "data manipulation through software tools".The above two features of the business view reinforce each other for gradual acceptance bythe AEC industry. What is needed is a critical mass from an industry alliance to initiate afeasibility study of the interoperable architecture, its business views and other supportingview points (information views, engineering views and technical views) for a quickdemonstration.This paper also presents some usage scenarios demonstrating how a user logs on as adesigner and connects to a design tool accessing data objects in a building model server.
Keywords: Modeling methodologies and technologies; discipline/phase specific models; interoperablearchitectures, business models, information models.
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