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A.V. Hore, R.P. West

CITAX: A COLLABORATIVE ICT STANDARDS MODEL FOR THE IRISH CONSTRUCTION INDUSTRY

Abstract: The Irish construction industry is facing a series of fundamental challenges that is affecting every player in the AEC lifecycle, from architects to engineers to quantity surveyors to owners to tenants. Despite technological advances in recent years, the Irish construction industry lags behind other industries in respect to ICT investments. Although there is a pressing need for innovation, existing procurement and tendering procedures in Ireland largely discourage new ideas and put further pressure on thin margins that characterise the competitiveness of the construction sector. The low level of inter-company ICT connectivity reflects the general fragmented and adversarial nature of the Irish construction industry, where the absence of dominant players has precluded the imposition of de facto inter-company ICT standards, as has been the case in the retail supermarket sector. This paper will present the results of a two-year research project which sought to demonstrate that, by the adoption of readily available ICT tools, particular business processes in construction could be dramatically improved. The paper goes on to describe the opportunities and challenges that have arisen as the project draws to a close. It will, in particular, focus on the introduction of ICT standards within the Irish construction industry. The ultimate goal is not only to have ICT standards in place, but also to provide the impetus to ensure that as many stakeholders as possible use them. How this might be achieved is also part of the project and its success will be judged by the extent of the adoption of the standard by the industry.

Keywords: Construction, ICT standards, re-engineering

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Series: w78:2008 (browse)
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Anders Robertson, Rogier Jongeling, Anders Ekholm, Thomas Olofsson, Alain Zarli

Investigations in the BICT project of state-of-the-art ICT for industrialization of house building processes

Abstract: The research presented here is part of a project named BICT, ”Evaluation of benefits of ICT for the indus-trialization of project and product processes in the construction industry”. Its overall objective is to establish a mutual understanding between the construction industry and R&D actors of the needs and possibilities of ICT. The project is a cooperative effort between Swedish and French researchers and industry representatives within the EraBuild program. It includes an investigation of the processes and ICT tools in a representative house building project, together with a study of the State-of-the-Art of ICT for immediate, short and medium term uptake. This paper presents the main results of the State-of-the-Art study with specific focus on: - Visualization and coordination using digital mock-ups of 3D models; - Model based quantity take-off; - Integration of applications for product design; - Reuse of experience based knowledge. The presented study concludes that the use of integrated 3D applications must be introduced early in the project lifecy-cle in order to pave the way for the use of object-oriented information in downstream processes. This requires common standards for 3D based deliveries developed in cooperation between industry and R&D actors through joint analyses of actual information management both in industrialised partnering-like processes, and fully industrial building proc-esses.

Keywords: construction processes, house building, industrialization, ICT, digital mock-ups, model based quantity take-off, integration of applications

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Series: w78:2007 (browse)
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B Mandava, J Zhang

A New Automated Quantity Takeoff Method for BIM-Based Bridge Designs

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Series: w78:2016 (browse)
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Bowen P A, Pearl R G

Interpesssnal communication of price-related information at the project inception stage: an interview survey

Abstract: The premise UPOn which this gaper is based is that, within the context of information transfer, there has been insufficient examination of the interpersonal communication function. This paper is concerned with the effectiveness of the interpersonal communication process associated with certain communication media utilised in the provision of price-related information at the inception stage of the building procurement process. More specifically, it deals with communication aspects of quantity surveyors’ engagement letters and documentation, clients’ briefs, and the language of building price forecasting. The paper documents the results of an interview survey concerning the opinions of clients, architects and quantity surveyors.

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Full text: content.pdf (1,945,968 bytes) (available to registered users only)

Series: w78:1993 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.033260) class.social (0.030565) class.bestPractise (0.025199)
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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.


Can Ersen Firat, David Arditi, Juho-Pekka Hamalainen, Johan Stenstrand, Juhani Kiiras

Quantity Take-Off in Model-Based Systems

Abstract: In recent years, as Information Technology (IT) tools and Building Information Models (BIM) are adopted by more practitioners, it has become apparent that it is possible to have a faster and more efficient quantity take-off system. The efficiency of quantity take-off lies in the smart transfer of the information produced in the design process to construction. Existing BIM-based quantity take-off is performed in the design phase of a project. BIM-based systems provide a smart platform for information exchange between design and construction.A “model-based” system refers in this paper to a Building Construction Information Model (BCIM)coupled with a location-based scheduling process.BCIM offers an environment in the construction phase, where data are stored, updated, and reused via the evolving project libraries of a building contractor. BCIM is composed of three submodels:(i) a building product model that provides the sections and quantities, (ii) a building resource and cost model that provides activity lists and labour consumptions to calculate activitydurations, and (iii) a building process model that introduces the interdependencies of the activities.· In the location-based scheduling process, a preliminary master schedule is obtained automaticallyfrom an information database, and then improved by the planner to fit the conditions of the company and of the project. The use of Advanced Line of Balance (ALoB) is proposed in location-based scheduling.The objective of this paper is to introduce the principles involved in quantity take-off in a “modelbased” system as implemented by a contractor. The paper consists of three parts: (1) the “modelbased” system (composed of BCIM and ALoB) is introduced as the theoretical background; (2) the steps in performing quantity take-off in “model-based” systems are described; and (3) a residential construction project is used to test the proposed quantity take-off principles.

Keywords: building information modeling, BIM, model-based systems, location-based scheduling, quantity take-off

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Series: w78:2010 (browse)
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Cheung S O, Au-Yeung R F, Wong V W K

A CBR based dispute resolution process selection system

Abstract: In construction, the use of Artificial Intelligence (A.I.) to assist project management in the areas of planning, quantity measurement and quality control have been reported. A.I. can minimize subjectivity which would otherwise predominate in many management decisions, one of which is the selection of a method to resolve disputes. Disputes in construction are common and resolving them has become a daily routine of project managers. Despite its importance, the use of A.I. in dispute resolution has not been extensive. Employing an appropriate resolution process is critical to resolve construction disputes. This is because that having an appropriate resolution process should pave the path to success. In this type of selection exercise, previous experience is invaluable and thus fits nicely with the function of Case-Based Reasoning technique. Case-Based Reasoning (CBR) can systematically select a dispute resolution process to fit the circumstances of a case. This paper describes the development of a CBR based dispute resolution process selection system identified as CDRe. Forty eight cases were used to develop the system which was tested by another 9 independent cases. Seventy seven percent prediction accuracy for the testing set was achieved suggesting that the CDRe is a reasonable decision support tool for project managers.

Keywords: artificial intelligence, construction dispute resolution, case-based reasoning

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Series: itaec:2004 (browse)
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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

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Series: w78:2010 (browse)
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Cornick T, Noble B, Hallahan C

The Limitations of current Working practices on the development of Computer Integrated Modelling in Construction

Abstract: For the Construction Industry to improve its processes through the application computer-based systems, traditional working practices must first change to support the integrated control of design and construction. Current manual methods of practice accept the limitations of man to process a wide range of building performance and production information simultaneously. However when these limitations are removed, through the applications of computer systems, the constraints of manual methods need no longer apply. The first generation of computer applications to the Construction Industry merely model ed the divided and sequential processes of manual methods i.e drafting, specification writing, engineering and quantity calculations, estimating, billing, material ordering data-bases and activity planning. Use of these systems raises expectations that connections within the computer between the processes model led can actually be made and faster and more integrated information processing be achieved. "Linking" software is then developed. The end result of this approach was that users were able to produce. information faster, present it in an impressive manner but, in reality, no perceived improvement in actual building performance, production economy or efficiency was realised. A current government sponsored Teaching Company Programme with a UK design and build company is addressing the problem of how real economic benefit can be realised through improvement in, amongst other things, their existing computer applications. This work is being carried out by both considering an academic conceptual model of how "designing for production" can be achieved in computer applications and what is immediately realisable in practice by modeling the integration of a limited number of knowledge domains to which computers are already being app1ied.i.e. billing from design, estimating and buying. This paper describes each area of work and how they are impacting on each other.

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Series: (browse)
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Class: class.economic (0.051898) class.impact (0.047946) class.environment (0.045258)
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Debras P

Construction application of a gen-network : uniform access to standards, products and company information

Abstract: "Facing an increasing competitive environment where flexibility and adaptability to change are the obliged route to success, building and construction companies have to continuously renew their working habits while keeping business processes under quality, time and cost control. In the Architecture, Engineering and Construction (AEC) domain, the wide diversity in terms of the object built, but also associated to the geographical dispersion of actors and building sites makes such an agility even more crucial. Considering the design and tendering phase of a construction operation, the architects and construction engineers have to efficiently select the manufactured products that will best suit the project while complying to its numerous constraints. Beyond the functionality, performance and cost characteristics, a suitable product has also to conform to the applying regulations and standards, be eventually accompanied with a corresponding technical agreement, offer acceptable delivery solutions on the building site. Moreover, once identified within a manufacturer catalogue, the product has to be integrated into the architect or engineer application desktop, whether it be a CAD, specification writer or quantity take-off application. Addressing these needs, the Global Engineering Networking (GEN) initiative is promoting the reuse of company internal and external engineering knowledge through the emergence of new kind of global market places where actors publish and retrieve on-line a wide range of engineering information and services. In particular, The Construction Pilot in EP 22 284 GENIAL project demonstrates over the AEC domain, the relevance of new generation of Information Technology infrastructures supporting the erection of Value-Added Service Provider (VASP) sites that materialise the GEN vision, i.e. allowing information and services to smoothly be retrieved where required whilst the succeeding company is concentrating on its core competencies. With such an infrastructure, whether it is through material, performances, manufacturer, regulation or price discrimination, the appropriate component, document or service is rapidly and cost effectively brought on the designer desk for the best value of the overall project. On the other side of the communication pipe, the supplying partner gains the opportunity of reaching an enlarged audience as IT now commonly break any geographical distance. In practice, three major information publishers and a building contractor in Europe initiate the GEN network in the AEC domain through the erection of VASP sites offering product, company or document related information. User queries are governed by various standard (EPIC, UNICLASS) or corpus specific (BATIBASE, EDIBATEC) classification systems. Relevance of the overall approach is demonstrated through the presentation of a large variety of such queries for the various information corpuses used : Techcom company and product information, BIC company, product and document, REEF regulation documentary corpus or EDIBATEC product information."

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Full text: content.pdf (748,881 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.legal (0.032376) class.retrieve (0.019963) class.roadmaps (0.012591)
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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


Juergen Melzner, Jochen Hanff and Jochen Teizer

Pattern-Based Generation of 4D-Schedules for Robust Construction Management

Abstract: The creation of construction schedules is a time-consuming manual process. While project planning depends on many tasks and parameters, the quality of schedules highly relates on the engineers' experience and the access to reliable, historical project data. While knowledge applied from software can assist an engineer, the main shortcoming of current tools is the separation in generating building information and construction process models. Proposed is a knowledge-based system that automatically generates 4D-schedules based on building information models. Patterns are used to generate a process model for repetitive work flows, such as placing formwork, reinforcing, and concreting. Pattern-enriched attributes, i.e. the topology of the building structure, are automatically applied to objects in the model. Resource allocation, such as varying the performance factors or the amount of work crews, becomes possible. Such analysis can still be evaluated and exported in the format of traditional Gantt-diagrams or color-coded 4D-schedules and the construction process model can be used for detailed scheduling, construction time control, and time-based quantity evaluations. The developed approach was validated for the concreting work of a 12-story tall office building under construction. Preliminary results indicate gains in accuracy and efficiency of the developed approach compared to the traditional scheduling process.

Keywords: 4D, Construction Schedules, Building Information Modelling (BIM), Simulation

DOI: https://doi.org/10.24928/JC3-2017/0223

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