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Al-Tabtabai H, Alex A P, James R

Slab formwork design using genetic algorithm

Abstract: A method to design cost-optimum slab formwork components is proposed in this paper. Genetic Algorithms (GAs), a technique based on the principles of natural selection and evolution, is applied to solve the optimisation problem. GAs search from a population of possible solutions limited by a set of constraints. The cost of form components and labor involved, were considered for the formulation of the objective function of the optimisation problem. The bending moment, shear, maximum deflection, imposed ACI code provisions, etc., were used as constraints for the optimisation problem. Application of GA to the formwork design problem provides optimum design parameters such as the optimum cross section for form members, optimum spacing of form members, etc., while minimising the total cost. Formwork made either from wood, wood-metal composite or metal alone can be designed using the proposed technique. The paper presents the case of general formwork design, however, the method as a whole readily applies to the design of formwok for elevated slabs and high rise concrete elements.

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Full text: content.pdf (84,716 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.economic (0.011489) class.analysis (0.007703) class.retrieve (0.007266)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Anastasiya Yurchyshyna, Catherine Faron Zucker, Nhan Le Thanh, Celson Lima, Alain Zarli

Towards an ontology-based approach for conformance checking modeling in construction

Abstract: This paper gives an overview of a formal ontological approach of conformance models for regulations in Construction aiming at answering the research question: “is an IFC-represented building project compliant to a set of construction rules?” The study analyses three key subtasks: (i) transformation of the IFC of the construction project; (ii) regulations formalisation; (iii) conformance checking reasoning. While analysing the IFC model redundancy and/or insufficiency for conformance checking reasoning, we suggest an intermediate RDF-based model, semantically en-riched and regulation-oriented. The regulation formalisation is studied under two viewpoints: the formalisation of pa-per-based regulation texts to be automatically used in reasoning and the development of the representation of ontology-based regulations. The construction rules are represented as a set of rules which premise and conclusion are RDF graphs. The conformance checking starts from the alignment of the construction project ontologies to the prem-ise/conclusion ontologies of the construction rule. Then, the checking in construction is seen as reasoning in terms of the corresponding RDF graphs. The paper concludes with a preliminary conceptual framework based on Semantic Web technologies modeling the conformance checking problem, as well as the technical solutions for its implementation. The respective architecture and future challenges of the work are also discussed.

Keywords: conformance checking, ontologies in construction, e-regulations, construction project conformance to regulations, semantic web in construction

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Full text: content.pdf (428,706 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Andrew P. McCoy, Robert Schubert, Robert Dunay, Joe Wheeler

lumenHAUS: Uses and Benefits of ICT for Design-Build Educational Environments

Abstract: By many accounts, American classrooms are not using the most effective means to properly educate and train young graduates and professionals. Common goals involve educational achievement and market advantage for students, with a wide variety of proposed solutions. Among the many solutions, technology in the classroom environment has been touted as one route for translating academic goals to the market. Education in the Architecture, Engineering and Construction (AEC) industry is no different: a rise in industry and classroom technology, paired with enrollment, justifies the need to re-focus solutions from technology to provide for the academic and market needs in the built environment. The recent Virginia Tech 2009 Solar Decathlon Competition (VTSD) offered an ideal setting for better understanding effective uses of technology in the translation of these AEC goals. VTSD was a student-led, integrated classroom environment incorporating students of all disciplines in the design and construction of an energy-efficient home. Information and communication technologies (ICT) played a major role in the educational and competitive efforts, all of which could translate to market advantage. This paper aims to explore academic uses and benefits of ICT for increased market acceptance through: 1) presenting common goals to the classroom, design-build education and the 2009 Solar Decathlon competition, 2) presenting various forms of ICT used to accomplish these goals and 3) presenting preliminary results of a survey of market acceptance for incorporated technologies.

Keywords: IT Supported Architectural and Engineering Design, Communication and Collaboration Technologies, Model Based Management Tools and Systems, Building Information Modeling

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Full text: content.pdf (236,600 bytes) (available to registered users only)

Series: w78:2010 (browse)
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Aouad G, Cooper R, Kagioglou M, Hinks J, Sexton M

A synchronised process/IT model to support the co- maturation of processes and IT in the construction sector

Abstract: In recent years many efforts had taken place in order to develop process and IT maps within the construction sector. However, the subject of co-maturation between IT and the process has not been given enough attention. This has resulted in the development of impractical solutions because of an apparent lack of balance between the IT and process capabilities. For instance, some organisations in the construction sector have adopted the rapid prototyping concept which is widely used within the manufacturing sector without even investing in 3D modelling and VR technologies which are the most appropriate for this task. Paradoxically, some organisations have invested in these technologies, but rapid prototyping is non existent. This paper addresses the issue of co-maturation between the process and IT in order to establish a balanced profile. The work is based on the CMM (Capability Maturity Model) model which was developed by the Software Engineering Institute at Carnegie Mellon University in order to develop software for the US government, particularly to be used by the Department of Defence. The CMM is a five-level model which include ad-hoc, repeatable, defined, managed and optimised stages. The model is designed so that capabilities at lower stages provide progressively stronger foundations for higher stages, reducing the change management risks. Each development stage - or "maturity level" distinguishes an organisation’s process or IT capability. This paper builds on the work achieved within the generic design and construction process protocol (GDCPP) which is being undertaken at the university of Salford. The main contribution of this paper is a conceptual model of co-maturation between IT and process. A synchorised IT/process model will be presented and discussed. This model is being developed through knowledge obtained form the industrial collaborators of the GDCPP project.

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Full text: content.pdf (120,604 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.029904) class.processing (0.022049) class.impact (0.010457)
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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.


Augenbroe G, Amor R

Project control in integrated building design systems

Abstract: With the fruition of research into integrated design systems that allow communication betweenmultiple actors and design tools, there is a growing need for control over the flow of execution ofproject tasks performed with the help of these systems. This calls for the specification ofconfigurable control systems that are able to 'design' the organization and management of actualprojects.The paper argues that an IT driven approach, leading to narrow software engineering solutions, isinadequate to solve the new type of project management problems that are inherent in the use ofcollaborative systems. It is argued that integrated systems will only find acceptance if, apart fromproviding 'generic integration facilities', adequate tools are provided to design, configure andexecute the management control on a case by case basis.A three-tiered control approach is discussed and a prototype tool to aid the project manager toexecute control is introduced.

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Full text: content.pdf (120,578 bytes) (available to registered users only)

Series: w78:1997 (browse)
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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.


B V Zhadanovsky, S A Sinenko

Visualization of Design, Organization of Construction and Technological Solutions

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Full text: content.pdf (151,348 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Bakis N, Sun M

Intelligent broker for collaborative search and retrieval of construction information on the WWW

Abstract: "CONTEXT In recent years, the construction industry began to use the World Wide Web (WWW) as an information dissemination vehicle. The amount of construction information available on the WWW is increasing exponentially, ranging from product data to technical publications, from building regulations to best practice guides. However, the task of finding the right information becomes more and more difficult. At present, users rely on two types of solutions to the information discovery and retrieval problem on the Internet, “yellow pages like information gateways” and “robot-based Internet search engines”. While acknowledging the success for both solutions so far, the authors will discuss their growing evident limitations in supporting construction specific information retrieval on the WWW. OBJECTIVES AND METHODOLOGY The aim of this study is to develop an intelligent information broker for the construction information on the Internet, which will facilitate collaboration between users for the benefit of improved information search and retrieval on the WWW network. The objectives are: ·to examine the information needs of different types of users in the construction industry; ·to capture these information needs conceptually as user profiles and information context models; ·to incorporate construction domain knowledge into the information network; ·to improve speed and accuracy of users search for construction information by developing a information network that facilitates the sharing of search results and knowledge; ·to develop a hierarchical distributed client/server architecture to enable the most efficient service both Intranet and Internet users. RESULTS AND CONCLUSIONS The intelligent information broker described in paper has a client/server architecture based on software agents technology. It has two distinct features: (1) supporting user collaboration; (2) applying construction domain and user profile knowledge to improve the information search. Collaborative Information Searching Collaborative searching or social filtering is often the most effective method of ranking Internet documents. The developed information broker enables users with the same interest to share the results of their search and their rating of each document’s quality and relevance. Construction knowledge and User Profile The information broker server is in essence a construction oriented WWW searching engine. What distinguishes it from other searching engines is its evolving knowledge base of construction specific keyword sets and construction user profiles. Using the knowledge base, the information broker server is able to answer intelligent queries other than simple keyword matching."

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Full text: content.pdf (197,260 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.054837) class.retrieve (0.047943) class.social (0.030880)
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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


Barlow R P G, Amirudin R

Structural steelwork planning and design evaluation - a knowledge based approach

Abstract: This paper discusses the application of design-for-manufacture and design-for-construction methodologies to the building industry through the use of electronic prototypes developed by using knowledge based engineering (KBE). A working group representing British Steel divisions and consulting engineers agreed key processes and rules affecting initial structural steelwork solutions. The pilot scheme now in progress will allow the structural designer to use concurrent engineering techniques to work with other members of the design team, to investigate the functionality of the design, agree design parameters across design disciplines and freeze the design at an earlier stage than was previously possible. The result should produce design solutions which are both functionally and financially viable.

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Full text: content.pdf (55,004 bytes) (available to registered users only)

Series: w78:1996 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.analysis (0.030568) class.impact (0.015619) class.environment (0.010120)
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Permission to reproduce these papers has been graciously provided by the University of Ljubljana. The assistance of the editor, Prof. Ziga Turk, is gratefully appreciated.


Becerik B

A review on past, present and future of web based project management & collaboration tools and their adoption by the US AEC industry

Abstract: The term "Construction Project Extranet" (CPE) in this paper refers to Internet sites, which offer communication platforms, project management functionalities and hosted collaboration spaces for Architecture, Engineering and Construction (AEC) Industry projects. The paper focuses on web-based CPE offerings and examines in-depth analysis of the past, present and future of CPE solutions for design and construction projects as implemented by the AEC industry in United States. The paper builds upon previous research as well as structured interviews that were conducted with technology providers, users, and experts. The findings from the interviews and literature search were analyzed to address these questions: How has CPE technology been developed? How much are these systems accepted and used? What are the barriers to widespread adoption? How will the market for such systems evolve? The main goals of this paper are to fulfill the need of research related to the developments in this field, to provide a concise, updated overview of existing implementation practices and the current situation of CPE market, to discuss the reasons for slow adoption of CPE technology by the industry, and to understand the adoption and technology development patterns to forecast the future trends in this field.

Keywords: adoption, AEC Industry, communication, extranets, information technology, and web-based project management

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Full text: content.pdf (385,542 bytes) (available to registered users only)

Series: itaec:2004 (browse)
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