Welcome
Digital library of construction informatics
and information technology in civil engineering and construction
 

Works 

Search Results

Facilitated by the SciX project

Hits 1 to 10 of 18

, ,

A decision support system for building refurbishment design

Abstract: "Refurbishment work in the EC currently accounts for more than one-third of the total construction output. This market is expected to grow stronger with the progressive ageing of buildings and the environment impetus to retain buildings. A further dimension is the need to adapt buildings for a greying population. There are important differences between refurbishment and new construction works. The existing building constraints the design solutions, construction technologies and work methods. Mechanisation, planning, and efficient organisation of refurbishment work is difficult, due to the small, labour intensive, and ad hoc, dynamic nature of the work. Also due to the relatively small scale of refurbishment projects, there have been no opportunities for standardisation and the applications of prefabrication and industrialisation are limited. Today, larger sized contractors are rapidly moving into the refurbishment market, in response to the shrinking new-build market and the higher technological demands of large scale refurbishment projects. The EC funded Brite Euram project 4670 is titled ‘Decision Support Systems for Building Refurbishment.’ This project has started in August 1998 and will finish in July 2001. Its objective is to develop a socio-technological-commercial framework and corresponding Decision Support Systems (DSSs) for housing refurbishment, to achieve: ? refurbishments which are more focused on user requirements; ? refurbishment designs which take into account the constraints of the existing building structure; ? increased incorporation of industrialised systems and components; ? organisational procedures and production technologies that recognise the unique nature of refurbishment work. The project is divided into three tasks. Task one aims at developing a DSS for the determination of the refurbishment demand and ballpark costs. Task two involves the development of a DSS for refurbishment design. Task three will result in a DSS for refurbishment process planning and control. This paper describes the approach followed for the ongoing development in task two, the DSS for refurbishment design. The main objectives of this task are to provide decision support at the project level. It will develop a database of layouts of representative existing housing estates and a database of preferred refurbishment layouts for these representative existing housing estates. Another database will be developed containing information on building systems and components that are relevant for the refurbishment process. Task two will establish a protocol for refurbishment design support. This protocol, which is implemented in a decision support information system, involves a number of steps that aid the user in selecting an appropriate housing layout and building systems and components that meet the user’s requirements. These steps involve the evaluation of a the user’s refurbishment demands and selection of a matching representative existing housing layout. Based on further dialog with the system, a preferred refurbishment layout is selected, which in turn is used as the basis for the selection of building systems and components that meet the performance requirements as stated by the user. The paper describes the methodology that is implemented in the system for retrieving performance requirements from the user, and the approaches for matching these to the stock of existing and preferred housing layouts available in the system’s database. The system is characterised by a flexible architecture of both the databases and the user interface, which results in a scalable system that allows the expansion of the databases with new graphical layouts and building systems and components, as well as the addition of new kinds of performance requirements. The system is implemented as an Internet application, which allows the database to be maintained centrally and facilitates world wide access to the system. The system’s implementation involves the combination of graphical and non-graphical data that can be queried and matched with only typical Internet browsing software installed at the client-side."

Keywords:

DOI:

Full text: content.pdf (465,782 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.029035) class.environment (0.012122) class.impact (0.010657)
Similar papers:
Sound: read aloud.

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


Conrad Boton, Sylvain Kubicki, Gilles Halin

Collaborative Construction Planning: Towards 4D Visualizations Adapted to Practitioners Requirements

Abstract: Managing the intervention of various actors during the construction phase is a recurrent issue in the construction sector. This is partly due to the multiplicity of stakeholders and the need to manage interfaces necessary for efficient planning and coordination of construction tasks. 4D CAD technology appears to be an innovative approach to answer such issues. It consists in combining a 3D model with the time dimension, in order to simulate the progress of works construction along the time.Our main hypothesis is that the use of 4D to support the actors’ collaborative work is not adapted enough to the need of the sector because the classical view (Gantt + 3D model) does not take into account the specific requirements related to particular usages (planning of interventions and reservations request for a contractor; simulation and integration of works’ interfaces for an engineer, etc..). It is therefore challenging to adapt the visualization to business needs of users.Developments in Human-Machine Interface and Information Visualization fields could allow us selecting user views properties (i.e. Structure, Quantity of information displayable, Graphical attributes, Content description, Interaction principles, Business view) and compose Coordinated Multiple Views. Therefore, the article propose a taxonomy to describe user views in order to setup a method for 4D visualization design, enabling to:1) Identify business practices (usages) related to the roles of different users, 2) Offer services tailored to different usages, and 3) Suggest visualization modes fitting each usage on the basis of our visualization model.In a case study we formalize a collaborative process to identify the usages of each practitioners involved in the collaboration construction process planning. It especially targets collaborative management of works’ interfaces. Then, after defining the required services, we suggest combining visualization methods suitable for each use in order to achieve views composition for each stakeholder.

Keywords: Construction process, Collaboration, 4D CAD, Human-Computer Interface, Information visualization, Business view, Model driven engineering

DOI:

Full text: content.pdf (254,485 bytes) (available to registered users only)

Series: w78:2010 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


G Kapogiannis, F Khosrowshahi, J Underwood

Digital Services for Construction Small and Medium Enterprises: A Conceptual Business Model

Abstract: The rapid deployment of web technologies delivers information from diverse sources in the world of digital business in a unified way. Within the construction industry the demand for investments in the digital dimension has raised very fast indicating a trend towards on-line collaboration services usually offered through a web portal. The main purpose of this research is to examine how the use of a web portal enhances the mission of construction Small Medium Enterprises (SME) in the local, national and international economy. Therefore, features and services captured from existing construction web portals are listed quantitatively to indicate those that are important to support the enterprise needs of construction managers and directors. Additionally the common practical and essential features considered in the technical and contextual design of a web portal geared for the use within the domain of construction SMEs in order to promote enterprise continuity in digital business are briefly presented. Results indicate potential support of interaction and collaboration among partners in the construction industry due to direct information accessibility as well as an attractive web platform developed based upon their daily needs. Therefore the need to develop a web business model is suggested to enhance the role of construction SMEs with a focus on online collaboration (online services). This model aspires to provide potential practical on-line dissemination of knowledge within construction SMEs to help the world of construction managers and directors in order for them to be more efficient, effective and creative when developing new businesses, new ideas and new projects. This model is partitioned to accommodate for flexible and scalable technological infrastructures that offer the necessary web services addressed to construction SMEs.

Keywords: Construction SME, Web Portal Technologies, Web Services, Virtual Organisation, Communication

DOI:

Full text: content.pdf (330,893 bytes) (available to registered users only)

Series: w78:2011 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Ibrahim, Manson; Jahnkassim, Puteri Shireen; Ali, Maisarah; Latip, Nurul Syala Abdul; and Abidin, NorZalifa Zainal

Virtual Reality in Heritage Studies and Historical Reconstruction through Animation – A Case Study of a 16th Century University Complex in the Ottoman World

Abstract: The paper describes the research and development of a virtual project based on the visualisation of measured architectural and construction details and extended research into a heritage building i.e. a 16th century Islamic complex undertaken as part of an architectural curriculum subject entitled ‘Heritage studies’. The modelling was focused on selected portions of the Suleymaniye complex in Istanbul Turkey, while the animation and storyboard integrated findings from a research extension of the project which looked at the link between the social structure of the city with the overall hierarchical nature of the architecture and planning of the complex. Virtual reality and animation tools were used within the process of analysing the architecture and construction technology within the background of the social structure of the Ottoman society during 15th and 16th centuries. The aim was not only to deepen constructional understanding but to discover the historical and social context which lay behind the development of its city life. The virtual reality dimension of the study focused on a virtual walkthrough and animation of the overall Suleymaniye complex and selected parts of the complex such as the madrasa and the ‘imaret’ or soup kitchen. The focus of the virtual walkthrough is the Süleymaniye Mosque which is surrounded by four medreses, a Darulhadis Medrese which had specialized in teaching Hadith, a medical school, a primary school, a hospital, a reflection hall, a caravanserai, shops, bath house, imaret (soup kitchen), caravanserai (inn), darussifa (hospital) or the hammam covering a 7.3 hectares wide area. Virtual reality was further used to enhance the story board based on the study on the link between the ‘waqf’ or pious foundations, and development of Ottoman urban life with the ultimate aim of linking these complexes to the social system and structure of urban society.

Keywords: Heritage Studies, virtual reality, visualization

DOI:

Full text: content.pdf (748,131 bytes) (available to registered users only)

Series: convr:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


J Zeb,T Froese, D Vanier

DEVELOPMENT AND TESTING OF A PROCESS MATURITY MODEL IN THE DOMAIN OF INFRASTRUCTURE MANAGEMENT

Abstract: As information systems continue to expand their reach into the work process of the construction industry, communication and information exchange that traditionally occurs between humans is increasingly being replaced with automated or semi-automated information exchange between computer systems. These computer-based communications must be more formally defined and designed than the human-based communications that they replace. We are researching techniques to formally represent design information transactions within the construction industry. As part of this work, we are interested in assessing the degree to which information exchange processes are formalized and managed. This paper focuses on the development and application of an Infrastructure Management-Process Maturity Model (IM-PMM) to benchmark the degree of formalization of work and communication processes in the infrastructure management field. The proposed IM-PMM evolved through reviewing a set of relevant maturity models. It uses a scale of five levels of process maturity and is based on three core dimensions (process, actor role, and information definition) to benchmark work processes, plus one dimension (message definition) to benchmark communication processes. The proposed IM-PMM has been applied in the domain of infrastructure management and attempts to benchmark only the asset inventory and condition assessment reporting processes using researcher-administered structured interview approach. From the results of the survey, it is concluded that communication processes in the area of infrastructure management are typically accomplished in an ad hoc (undefined and unstructured) manner, emphasizing the need for improvement if advanced information systems are to be deployed to support efficient management of infrastructure systems.

Keywords: Process Maturity Model, Benchmark, Maturity Stage, Process Formalism, Transaction, Message, Actor-Role, Asset Infrastructure Management, Asset Inventory Management, Asset Condition Assessment

DOI:

Full text: content.pdf (181,208 bytes) (available to registered users only)

Series: w78:2011 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kilian, Axel

FABRICATION OF PARTIALLY DOUBLE-CURVED SURFACES OUT OF FLAT SHEET MATERIAL THROUGH A 3D PUZZLE APPROACH

Abstract: The topic of this paper is the connection of digital modeling with generative programming and rapid prototyping, to produce physical sketch surface models. The physical surface models are assembled out of developable strips connected through a puzzle-like detail. The use of programming as a design approach allows the generation of connection details that corresponds to the rules of flat sheet rapid prototyping techniques of laser cutting and water jet cutting. With numerically controlled cutting, there is no need to keep the joint detail related to manually achievable forms or to apply a standardized dimension. This paper demonstrates the possibilities of programming to generate cutting geometries that adapt to the local surface properties. The larger perspective of the research approach is the question of how to formulate and capture design intention through programming. What influence does the use of generative modeling in combination with rapid prototyping have on the design language of physical objects?

Keywords: fabrication, generative design

DOI:

Full text: content.pdf (2,151,238 bytes) (available to registered users only)

Series: other (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kitchens, Kevin and Shiratuddin, Mohd Fairuz

Interactive Home Design In A Virtual Environment

Abstract: In today’s residential market, clients are often faced with many challenges when designing and buying their own home. Most clients find it difficult to visualize exactly what they need by simply going through two-dimensional (2D) blueprints or floor plans. Study shows that 2D visualization has a much steeper learning curve because human naturally sees three-dimensionally. Common tools used to create 2D plans such as AutoCAD have certain advantages in home design, but it may be complex for average users to visualize exactly what has been created. 3D modeling addresses the third dimension (i.e. depth) that is not present in 2D CAD drawings. It allows for better visualization and understanding of designs. For architects, this is a leap from traditional method whereby clients are presented with numerous 2D drawings. The use of 3D modeling can improve precision and speed of the design process and eliminates potential costly errors. However, current 3D modeling software provides limited realtime 3D interactions for users. This paper presents an interactive home design application in a virtual environment. We developed a prototype using a next-generation 3D game engine known as the C4Engine. This paper also describes the development process of the prototype application, its components and features.

Keywords: home design, interactive visualization, next-generation 3D game engine, virtual environment

DOI:

Full text: content.pdf (368,279 bytes) (available to registered users only)

Series: convr:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Kumaraswamy M M

Accelerating learning via virtual site visits

Abstract: Web-based 'virtual site visits? have added a new dimension to the teaching learning environment of civil and construction engineering undergraduates in Hong Kong. Virtual visits, to both landmark and typical construction projects, overcome many obstacles, such as in moving large classes to the right places at the right times. They also enable convenient re-visits and multimedia enhancements for comprehensive appreciation of all relevant aspects. Such benefits have been demonstrably derived through CIVCAL - a computer aided teaching-learning package developed by a four-university multi-disciplinary team in Hong Kong. This paper provides examples of the multimedia-enhanced resources that are now available for supplementing teaching-learning through CIVCAL. The construction 'work study' module is described as an example of potential extrapolation to continuing education and better practice. This would also respond to recent industry pressures for enhanced value and productivity via 'lean construction? initiatives. Overall, the CIVCAL package also provides an example of another dimension in 'knowledge' capture and dissemination towards continuous improvement and organisational learning.

Keywords: construction, CIVCAL, Hong Kong, multimedia, virtual site visit, web-based

DOI:

Full text: content.pdf (2,653,811 bytes) (available to registered users only)

Series: itaec:2004 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


L Rischmoller & E Valle

Using 4D in a new ""2D + time"" Conceptualization""

Abstract: This paper describes a system that combines a 2D digital board that shows dynamically in rows and columns arranged in a special layout, starting and finishing dates of subcontractors work linked to the fourth dimension, time, coming from construction schedules. The system is the result of a research project whose objective is to improve planning, scheduling, and controlling the work of subcontractors of finishings in building projects. The system will be tested on case studies projects for planning, scheduling and controlling the work of subcontractors. It is expected that the systems will act as a powerful real time Visualization, Planning, Analysis and Communication Tool in the case studies. Despite the 3D case studies models were very useful for constructability and other purposes, the traditional 4D approach that combines 3D + time was not very useful when dealing with construction works that remained mainly ""hidden"" within the project 3D model. Applied to the case studies, the digital board shall provide different ways to display, communicate and understand information about resources, costs, dates and relationships coming from a traditional CPM network using 4D in a new 2D + time conceptualization.""

Keywords:

DOI:

Full text: content.pdf (470,415 bytes) (available to registered users only)

Series: w78:2005 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.

Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


Lopes J L R

An investigation into the main information dimensions of corporate real estate management

Abstract: The fragmentation of the construction and real estate sectors, and the information intensive character of their activities, makes it very difficult to select, store and transfer relevant information among its members. The volume and diversity of data in these sectors have been a hindrance for developing effective, integrated and standardised information systems for construction, building and real estate management. To overcome these problems at the level of strategic management of corporate real estate, a research was set to elicit the main information dimensions, or the main concerns, within the area. This research used as paradigms models that succeeded on defining and using the main dimensions of a particular subject matter, facilitating communications, decision-support and learning processes. Examples of these paradigms are the main factors of production in the theory of capital in economics, the balanced scorecard and the critical success factors in organisational management, the three dimensions in project management and Pena's (1987) main concerns for programming in architecture. The research consisted of a content analysis of seventy corporate real estate management (CREM) models used in industry and academia eliciting the main features (concepts, tools, techniques, methods) quoted on these models. Using classification techniques and supported by a literature review and expert interviews, these features were classified according to their nature, similarities and origin. The main dimensions resulting from this classification system provided the main information dimensions in CREM. These dimensions are financial, physical and human, each one divided in three classes, respectively. The financial dimension is divided in the classes rentability, business information and intelligence. The physical dimension is divided in the classes data, management and diagnosis. Finally, the human dimension is divided in the classes organisation, occupancy and customer. Examples of uses of the CREM framework are given.

Keywords:

DOI:

Full text: content.pdf (72,776 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software development (0.021566) class.education (0.018527) class.strategies (0.016666)
Similar papers:
Sound: read aloud.

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.


For more results click below:

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
this is page 1 show page 2 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003