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

Works 

Search Results

Facilitated by the SciX project

Hits 21 to 30 of 40

Kaivonen J A

Method for calculating ecological balances

Abstract: Methods for assessing environmental impacts are needed in building design. Need arises from environmental strategies of the developer of a building. Embodied energy and some other impacts can be analysed by using either input-output analysis or process analysis. An ordinary input-output table is not accurate enough for all comparison purposes. In this research a model was developed that allows results of input-output analysis to be improved with process analysis data. The result of input-output analysis, the environmental inverse matrix is used as a part of building process model database so that environmental assessment of buildings by using input-output analysis does not require matrix operations.

Keywords:

DOI:

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

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


KU Gökçe, RJ Scherer & HA Dikbaº

Web-based integrated construction management solution

Abstract: Construction projects are becoming more and more sophisticated, as a result of increased client requirements, tighter budget and time frames, larger number of participants and more complex work processes. However, especially in the area of construction project management (CPM) these growing requirements are not yet sufficiently addressed by today's IT. Even though several systems integrating CAD, ERP and CPM tools have been developed and brought to market over the last years, there is still lack of efficient data and process interoperability for the purposes of CPM. Also, solutions are mostly proprietary, taking little account of established standards for the improvement of the quality of the product and the management processes. In this paper we analyse CPM processes in terms of the needed applications and on the basis of generalised industry requirements. We describe the construction management life cycle model and suggest an IT framework for an integrated CPM system that can bring together design, ERP and CPM tools on the basis of standardised shared data (IFC) and standardised quality management procedures (ISO 9001). Reported is work that started at the Istanbul Technical University on more practical terms and is now continued, generalised and expanded at the TU Dresden in the frames of a PhD study.

Keywords:

DOI:

Full text: content.pdf (934,700 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.


L L olde Scholtenhuis, T Hartmann

Changing Scheduling Purposes and Evolving 4D-CAD Models: A Study of Planning and Realization in a Utility Project

Abstract:

Keywords:

DOI:

Full text: content.pdf (32,110 bytes) (available to registered users only)

Series: w78:2014 (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.


Marianthi Leon, Richard Laing, Jake Loveday, David McClean and Sandy Beattie

Development of an Urban As-Built Model: The Case Study of Aberdeen

Abstract: This paper is focusing on the local strategic development plan for the city of Aberdeen, UK, and examines the initiation of applying a regeneration plan to the city centre. For that purpose, Aberdeen City Council commissioned Robert Gordon University to develop a 3D as-built model of the city centre. The researchers developed a novel process to tackle data acquisition for urban scale as-built visualisations that would afterwards promote stakeholders' collaboration. A workflow was developed and tested with the aim to provide not only geometric accurate data of the current state but also meta-data in relation to historic and future applications. Terrestrial LiDAR systems were employed and rapidly advancing hardware and software was tested, evaluated and utilised.This project aims to have an impact to the 3D data acquisition in relation to urban scale projects that apply Terrestrial Laser Scanning technologies. Furthermore, the suggested workflow can be generalised for the production of urban scale as-built models for the purposes of design and planning decision making and delivery of sustainable infrastructure, transportation systems and overall sustainable communities. The paper concludes with further suggestions for the generalisation of the process and its adaptation depending on the application, i.e. transportation, green spaces.

Keywords: 3D Laser Scanning, As-Built Modelling and Visualisation, Data Acquisition

DOI: https://doi.org/10.24928/JC3-2017/0141

Full text: content.pdf (11,550,306 bytes) (available to registered users only)

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


Miklós Molnár, Ronny Andersson, Anders Ekholm

Benefits of ICT in the construction industry – characterization of the present situation in house-building processes

Abstract: Departing from the hypothesis that R&D within ICT plays an essential role in the transformation of the construction sector from a traditional to an industrialised process, a joint Swedish and French project has been carried out (to be completed in April 2007) to assess the short and medium term possibilities to improve efficiency and quality in multi-storey house-building. This paper describes today’s use of ICT (situation as-is) in Swedish multi-storey house-building projects and identifies a number of key development areas. The research was carried out through steps includ-ing statistical analyses of market data, a case study, a survey with active developers working with R&D in the field of ICT and workshops with construction industry representatives and researchers. Typically, Swedish multi-storey house-building projects are carried out as isolated projects, involving 15 designers, 20 subcontractors and 40 material suppliers. Relations between most of the project participants are ad-hoc. ICT-use is regulated by the architect’s CAD manual regarding layer structures, routines for information exchange during design, use of a project network, hardware, software and filing. 2D CAD is the predominant design tool. ICT is widely used for administrative purposes, especially by the large contractors. Information transfer between participants in and between different stages of the project is inefficient and redundant information is created. Transfer of information is often car-ried out manually. Computer aided design, interoperability, virtual reality, cooperation and ICT-policies, the product definition process, use of systems products, quantity take-off and reuse of experience are identified as development areas where ICT can play an important role to improve productivity and quality. Highest potential to achieve improvement by immediate uptake is attributed by the survey persons to computer aided design, interoperability and reuse of experience. A time span of 2 - 5 years is needed to obtain benefits by more efficient cooperation and ICT-policies and rational quantity take-off.

Keywords: construction processes, house-building, industrialization, information and communication technology (ICT)

DOI:

Full text: content.pdf (192,338 bytes) (available to registered users only)

Series: w78:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Nashwan Dawood, Ammar Al-Bazi

Improving the performance and reliability of construction supply chain using simulation: a case study for doorsets manufacturing -DOORSSIM-

Abstract: Successful supply chain management calls for robust supply chain design and evaluation tools. In adition, a set of performance and reliability measurement tools are strongly needed to evaluate the overall supply chain effec-tiveness. Simulation is a widely used technique for modelling manufacturing and other types of complex systems. A literature review reveals that there are only few studies on determining the bottleneck in supply chain and in particular, product components like doorsets. The objective of this ongoing research is to determine the impact of various operating conditions on the performance of the doorsets manufacturing system in order to capture some Key Performance Indicators (KPI’s) and bottlenecks within the production cycle. A case study is implemented in the doorsets manufacturing industry. The ultimate objective of this research is to develop a doorsets simulation model to evaluate the production perform-ance and reliability of the manufacturing processes. Process mapping methodology (IDEF0) has been used as an effective tool for process modelling purposes. A detailed level simulation model of the doorsets manufacturing (DOORSSIM) is developed to answer questions related to effects of the various operating conditions on the productivity performance of the job-shop. This simulation model, provide details about the dynamic of the operations and functioned as a convenient “what if” evaluator of proposed operational changes.

Keywords: process mapping, simulation modelling, job-shop, performance measurement

DOI:

Full text: content.pdf (506,293 bytes) (available to registered users only)

Series: w78:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Niclas Andersson, Pernille Hammar Andersson

Building Information Modeling in Engineering Teaching - Retaining the Context of Engineering Knowledge and Skills

Abstract: The application of Information and Communication Technology (ICT) in construction supports business as well as project processes by providing integrated systems for communication, administration, quantity takeoff, time scheduling, cost estimating, progress control among other things. The rapid technological development of ICT systems and the increased application of ICT in industry significantly influence the management and organisation of construction projects, and consequently, ICT has implications for the education of engineers and the preparation of students for their future professional careers. In engineering education there is an obvious aim to provide students with sufficient disciplinary knowledge in science and engineering principles. The implementation of ICT in engineering education requires, however, that valuable time and teaching efforts are spent on adequate software training needed to operate the ICT systems properly. This study takes on the challenge of using ICT in engineering education without diminishing the body of technical disciplinary knowledge and the understanding of the engineering context in which it is taught, practiced and learned. The objective of the study is to describe and review an extensive role play simulation where students interact with real professional engineers. The role play simulation aims at providing a realistic learning context for the students in order to facilitate the learning objectives of the disciplinary knowledge of the course, which in this case is represented by adopting Building Information Modeling, BIM, for construction management purposes. Course evaluations, a questionnaire and discussions with students confirm a genuinely positive attitude towards the role-play simulation and interaction with industry professionals. The students engage in the role-play and express an increased understanding of the requirements and implicit rules of real-life engineering. The interaction between students and the professional engineers act as a prime mover for the students to perform their best, which in turn strengthens the learning of the disciplinary subjects.

Keywords: BIM, engineering teaching, role play, simulation, industry participation

DOI:

Full text: content.pdf (78,503 bytes) (available to registered users only)

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


Nobuyoshi Yabuki, Yoshikazu Shimada, Kikuo Tomita

An on-site inspection support system using radio frequency identification tags and personal digital assistants

Abstract: Inspectors of buildings including power plants have to carry a bulk of documents and drawings to perform their tasks, otherwise they have to memorize extensive knowledge and data about the structures and facilities. Thus, a light and handy IT solution system for supporting inspectors is desired. In this research, we propose and develop a prototype on-site inspection support system. This system consists of a RFID tag system, a PDA connected to the Internet, a voice input/output system, and a digital camera. In our approach, senior inspectors' knowledge such as advices and warnings regarding each facility and structural member for inspection is input to RFID tags via voice at the site as if the inspector is teaching a junior inspector. And each RFID tag is glued to the facility or member. A junior inspector can obtain such valuable knowledge later on when he or she inspects the building alone from the reader-writer and PDA system. This system will enable senior inspectors to transfer their expertise that can be excited only at the site to a knowledge system. The information in the RFID tags can be altered or augmented when necessary. RFID tags can carry not only inspectors' advices and warnings but also the ID, main feature and recent inspection data of each facility or member. The inspector can have access to the corresponding drawings, specifications, data of testing, etc. from the ID of the RFID tag by the PDA. When more information is needed, the inspector can get information by the PDA from the headquarters databases via the Internet. The sound input system can be used to record sounds of various machines such as generators, compressors, sirens, etc. and the recorded sounds can be analyzed and evaluated on site by this system. Digital photographs can also be taken and stored in the database and compared with the previous ones for inspection purposes.

Keywords:

DOI:

Full text: content.pdf (950,708 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.education (0.027236) class.bestPractise (0.020089) class.store (0.009055)
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.


Oinas M

The utilization of product model data in production and procurement planning

Abstract: A new way to perform quantity take offs in building construction has been introduced in a form of value engineering concept. Value engineering tools allow the user to model the building three dimensionally using CAD (Computer Aided Design) -interface and an expert system. Nowadays this product model information is used for cost estimation purposes only. This highly detailed and structurized information could be used in production and procurement planning too. Product model information is enhanced with production information by allocating methods and resources to appropriate construction activities. These activities will then be scheduled in the scheduling application. Importing this activity timing data back to our production planning system we can conclude the needs for the resources: what, how much, when and where they are needed. This paper presents an effective procedure to utilize highly detailed product model information for production and procurement planning purposes. Data warehouse concept is also introduced for analysing the procurement data for management purposes.

Keywords:

DOI:

Full text: content.pdf (212,952 bytes) (available to registered users only)

Series: w78:1998 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.053255) class.analysis (0.020591) class.man-software (0.020464)
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.


For more results click below:

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
show page 1 show page 2 this is page 3 show page 4 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003