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 22

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.

Keywords:

DOI:

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)
Similar papers:
Sound: read aloud.

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 Firmenich, C Koch, T Richter & D G Beer

Versioning structured object sets using text based Version Control Systems

Abstract: With the availability of an affordable and ubiquitous network environment the distributed cooperation of projects can be supported by computer software. Currently, the degree of support of a distributed cooperation is very different in the diverse classes of applications. While in the field of text-based applications the synchronous distributed cooperation is already state-of-the-art, the users of document-based applications can currently only cooperate asynchronously in terms of a workflow by exchanging documents. This contribution describes a solution approach for the re-use of existing document-oriented applications in net-distributed processes. The synchronous cooperation is realized by a novel procedure that stores the structured object sets of existing single user applications in version control systems, where the well proven tools of the software configuration process can be used in distributed construction planning processes as well.

Keywords:

DOI:

Full text: content.pdf (462,969 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.


Berto P,Cachadinha N

A BIM and AR based platform for managing non-conformances

Abstract: Defects and errors are common and occur repeatedly during construction projects. An effective management of non conformances is vital for a streamlined and efficient production progress. Large quantities of data and information are produced, which can be lost or misinterpreted. Several defect managing systems have been developed to facilitate measuring and correcting defects. However, few focus on data and information gathering and sharing, as well as providing an efficient communication tool for teams on site. Building Information Modeling (BIM) has proven to improve communication and information sharing. The lack of platforms that integrate BIM in the communication processes used on site is hindering the full exploitation of its potential in improving communication. The overarching aim of this research is to develop a unified real-time communication platform capable of providing richer information for the decision making in the non conformances management process. This study lays out the conceptual framework for the communication platform “C-BIM-thru-AR” (Communicating BIM through Augmented Reality). This platform integrates BIM models into the communication channels used on-site and offsite via Augmented Reality (AR) systems. To develop the “C-BIM-thru-AR”, first the systems functional requirements had to be established. To accomplish this, the Integrated Definition for Function Modeling (IDEF0) technique was used to create as-is maps to analyze processes included in production management and establish functional requirements. With the functional requirements gathered and by applying a system thinking approach, the platforms framework and network architecture were developed. The proposed platform aims at enhancing the management and quality of all the information produced from the management of non conformances, ultimately improving the processes productivity. In future studies, the proposed platform could be exploited in the management of subcontractors’ performance which could be stored automatically in the “C-BIM-thru-AR” platform.

Keywords: Building Information Modeling,Augmented Reality,Unified Communication Platform,Communication,Information Sharing

DOI:

Full text: content.pdf (2,100,186 bytes) (available to registered users only)

Series: convr:2013 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Bügler M,Dori G,Borrmann A

Swap based process schedule optimization using discrete-event simulation

Abstract: Large construction projects usually involve many tasks, which are connected through dependencies and usage of common resources and materials. Determining the optimal order of task execution is in most of the cases impossible to do by hand. Therefore different methods for automatic optimization of large process schedules using a discrete-event simulation system were investigated. This paper introduces a new heuristic method for the resource constrained project scheduling problem, called swap-based optimization. Compared to creating an optimal schedule from scratch, the swap approach facilitates obtaining metrics about the performance of the result, before having worked through the entire construction process. Swaps are introduced into the simulation model by assigning priorities to the tasks. After running a simulation a list of possible swaps is created. Applying one of them and restarting the simulation will introduce a change into the sequence of the tasks within the schedule, generating a different schedule than the one before. Different tree search algorithms, traversing the space of possible swaps throughout a construction process, were analyzed. The suitability of the method is proven by an extensive case study.

Keywords: Resource Constrained Project Scheduling Problem,Project Schedule Optimization,Discrete-event Simulation,Task Swaps,Construction Site,Tree search

DOI:

Full text: content.pdf (392,459 bytes) (available to registered users only)

Series: convr:2013 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Dawood N, Sriprasert E, Mallasi Z, Hobbs B

4D visualisation development: real life case studies

Abstract: Visual 4D planning and scheduling technique that combines 3D CAD models with construction activities (time) has proven benefits over traditional tools, such as bar charts and network diagrams. In 4D models, project participants can effectively visualise and analyse problems regarding sequential, spatial, and temporal aspects of construction schedules. As a consequence, more robust schedules can be generated and hence reduce reworks and improve productivity. Currently, there are several working research prototypes and commercial software that have ability to generate 4D model. However, two major issues arise regarding the current 4D development approaches and the use of commercial software. These are the limited feasibility to large and complex projects, and inflexibility to incorporate more construction problems (nD modelling) especially for process constraints such as spatial conflicts, and availability of information and resources. As a part of the VIRCON project, an EPSRC funded research, this paper introduces a pragmatic approach to develop extensible 4D visualisation using two real life case studies. ProVis, a 4D simulator, was developed using Visual Basic for Applications (VBA), accessing the integrated products and processes from the VIRCON database and produces 4D model in the AutoCAD environment. This 4D tool is also integrated with a Critical Space Analysis (CSA) tool (another VIRCON tool) and is able to visualise spatial overload of the construction site. The paper details 4D development process based on the proposed approach and discusses efforts spent to convert general project information (2D drawings and schedules) to 4D models. It is concerned that a little additional effort was needed to develop the extensible 4D model based on the proposed approach. In addition, no commercial 4D software was used to achieve the visualisation process.

Keywords:

DOI:

Full text: content.pdf (1,175,014 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.social (0.022151) class.processing (0.014982) class.software development (0.008395)
Similar papers:
Sound: read aloud.

Permission to reproduce these documents have been graciously provided by the Aarhus School of Architecture, Denmark. The assistnace of the editor, Prof. Kristian Agger, is gratefully aprecciated.


Futcher K G

User survey on a wan portfolio M.I.S. used for porfolio/project management in Hong Kong.

Abstract: This paper presents the results of recent research into the user expectations for a Management_Information_System (MIS) for the project/portfolio-managed delivery of a large and diverse range of projects. In 1998, the Works Bureau of the Government of Hong Kong undertook objective measurement of the extent that an MIS, called the PW_MS, contributed to the successful project and portfolio management of its large and diverse portfolio of more than two thousand public works projects. This rolling-programme of projects includes up to 72 types of public infrastructure. The delivery process depends on a highly differentiated organisation in which each of the public works departments has different staffing levels, workloads, locations, and each undertake different types of work. The objective of the assessment was to determine: · the extent that the PW_MS was successfully used for the management of individual projects; · the extent that the PW_MS was successfully used to help manage the portfolios-of-projects overall; · the extent that other means of data collection and reporting that are otherwise used for both of these functions; and, · to identify the requirements for an improved MIS. This paper presents the results of this postal survey of a population of five hundred and eighty-four authorised users of the PW_MS. It is a complex WAN system, with 168 terminals in the client and public works offices for operational access to the MIS. It has routines for the planning, reporting and monitoring of the cost, time and scope aspects of each project in the PWP. It establishes a fixed plan for each project and provides an audit trail of progress towards completion. The data in the system is combined to provide summary reports of portfolios of projects. A random selection from the User-population was used to form a population-sample for the postal questionnaire survey. The sample frame was constrained to ensure a 95% confidence limit that the response was statistically indicative of the population; and that it included sufficient numbers of the primary classes of users to also ensure a 95% confidence limit that the response was indicative of these strata of the population. This methodology is described in the paper. A sixty-five percent response was achieved. The results show that the User satisfaction with the PW_MS is not high. The results state a range of User dissatisfactions but they do not call for a fundamental change in approach: they validate the exploitation of proven, readily available, information technology for the management of portfolio-of-projects. Portfolio-management and project management is enabled by these techniques although the survey results indicate that more can be done to improve the man-machine interface. The results identify key-areas for such improvement. These findings are presented in the paper.

Keywords:

DOI:

Full text: content.pdf (182,628 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.social (0.023977) class.impact (0.022037) class.strategies (0.021118)
Similar papers:
Sound: read aloud.

Permission to reproduce these documents have been graciously provided by CSIR Building and Construction Technology. The assistance of the editors, Mr. Gustav Coetzee and Mr. Frances Boshoff, is gratefully appreciated.


Gage Christianson, Evan Wilson, Matthew Henke, Omar Ahlnaity and Jeong Woo

Cloud-Based Project Management: Selecting IT Solutions for Construction Companies

Abstract: Cloud Based Software (CBS) has transformed the construction industry. CBS allows its users to access information from anyplace, at any time, given they have a platform, device and internet to access it. CBS programs have also developed from specialized programs in one company function, to specialized programs in several areas in the construction field, such as: daily logs, document/photo storage, prequalification, and scheduling. CBS has proven to significantly increase productivity and communication in the construction company. A research survey was conducted for construction companies in the Mid-West about their current usage of CBS programs. It was found that 84.4% of respondents reported having to use three or more different construction programs due to the fact that none completely satisfied all their cloud integration needs. 81.8% of respondents also reported inefficiently operating at less than two company functions per program. Respondents stated frustrations that programs are not all-inclusive and do not contain all of the day-to-day functions needed to run their project on one platform. This is evidence of the need for one program to be used for all daily company functions. It was found through research and analysis that there are all-in-one CBS programs available in the current market.

Keywords: Construction Information Technology (CIT), Cloud-Based Software (CBS), Construction Software Analysis, Construction Project Management, Construction Data Survey

DOI: https://doi.org/10.24928/JC3-2017/0142

Full text: content.pdf (558,924 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Harrison D, Donn M, Skates H

Applying web services within the AEC industry: enabling semantic searching and information exchange through the digital linking of the knowledge base

Abstract: The Architecture, Engineering and Construction (AEC) industry is fragmented by professions separated by skill, stigma and distance. This fragmentation has created a dispersed knowledge base with knowledge gaps occurring within and between the professions. These knowledge gaps can only be overcome through the exchange of information and past experiences. Presently this exchange is reliant on manual communication, which has proven inefficient and open to misinterpretation. Web Services have been developed within the Information Technology industry to allow the crossplatform exchange of complex data. The application of this technology within the fragmented AEC industry holds significant potential. Research at the School of Architecture, Victoria University is exploring the integration of Web Services within existing databases to enable the searching, exchange and flexible presentation of relevant AEC information. Following industry feedback the aecBEDRock concept has been proposed which would enable the digital exchange and searching of valuable AEC data between professionals. The aecBEDRock concept utilizes the properties of Web Services and Industry Foundation Classes to create a digital AEC information framework that could bind the knowledge base of the industry. A stronger knowledge base would increase quality levels within the construction process through increased professional awareness and efficiency

Keywords:

DOI:

Full text: content.pdf (205,243 bytes) (available to registered users only)

Series: w78:2003 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.

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.


Hartvig S C, Andersen T

Agents in an integrated system architecture

Abstract: This paper presents research findings from development of an expert system and its integration into an integrated environment. Expert systems has proven hard to integrate because of their interactive nature. A prototype environment was developed using new integration technologies, and research findings concerning the use of OLE technology to integrate stand alone applications are discussed. The prototype shows clear advantages of using OLE technology when developing integrated environments.

Keywords:

DOI:

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

Series: ecce:1997 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Karhu V

A model based approach for construction process modelling

Abstract: Process modelling methods have been developed for describing different aspects of industrial and other processes. Each method, e.g. the widely used scheduling in project planning software, has a specific scope for which it has been designed. Used outside this scope the method may prove quite inadequate. The newer type of modelling method GEPM, generic process modelling method, has been developed. It has borrowed many features from other modelling methods such as scheduling, IDEF0, and the so-called simple flow method. The term simple flow method is a box-and-arrow method that have been used for construction process descriptions in several companies in different variations.The GEPM method is flexible in a sense that the conceptual model, which has been defined using the EXPRESS modelling language, can be changed in order to achieve specialised additional features when needed. The database implementation supports this approach as well. GEPM enables the users to interact with the developed process models through views. The chosen views are scheduling, IDEF0, and simple flow view. The implementation of GEPM in a database and the data exchange with other software tools has proven useful. The view analogy can be compared with advanced CAD tools, where users interact with the designs through design drawings in different scale. GEPM can be used for describing partly company specific quality systems with reference models. The reference models can be converted into project specific models, which in turn are scheduled.

Keywords:

DOI:

Full text: content.pdf (254,511 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.026283) class.synthesis (0.018116) class.processing (0.016651)
Similar papers:
Sound: read aloud.

Permission to reproduce these documents have been graciously provided by CSIR Building and Construction Technology. The assistance of the editors, Mr. Gustav Coetzee and Mr. Frances Boshoff, 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 show page 3 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003