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A Guerriero, S Kubicki, L Schwartz

Design and assessment of prospective mobile services for construction

Abstract: Mobile applications become more and more used in both private and professional activities.Innovation through mobile services specification and prototyping becomes a major trend inconstruction sector research. The project presented in this paper aims both at demonstrating theinterest of mobile technologies for assisting building construction coordination and to elicitate themost interesting and common requirements of construction practitioners for this type of application.Then the paper focuses on the method used for specifying basic requirements and the experimentalprotocol setup for assessing the developed prototype. The main outputs are a set of specifications and aprototype of mobile application as well as a method for defining experimental protocols in a context ofservice-based innovation. The prospects envisage considering context-aware mechanisms for therecommendation of mobile services to construction practitioners.

Keywords: Construction management, Mobile computing, Mobile service prototyping, Experiment protocol.

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Series: w78:2011 (browse)
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Chege L W

E-commerce and value chain management – the prospects and challenges for the South African construction industry

Abstract: The utilization of e-commerce in business has been the subject of widespread and continued debate in recent years. The growth of e-commerce has been phenomena1 and it is radically transforming the way companies are doing business in all sectors, and the construction industry is no exception. Value chain management is an important concept in construction as it encompasses the activities that involve the transformation of inputs into outputs and the management of projects from development to final commissioning in order to maximize the value of a project. This paper will look at the potential applications of e-commerce in the South African construction industry with particular emphasis on their impact on value chain management. The potential applications to be reviewed are the development of electronic tendering procedures; electronic systems for the exchange of information on an ongoing project; and the electronic buying and selling of goods and services for utilization in the construction process. These e-commerce applications will invariably play an important role in enhancing the management of the value chain through improvements in the overall process from the initial tendering stage. Although e-commerce offers tremendous opportunities to the South African construction industry, these opportunities are not without challenges. This paper will also seek to address these challenges which include the issue of how to create an enabling environment to allow Small Medium and Micro Enterprises (SMMEs) to reap the potential benefits that e-commerce has to offer; and the issue of protection of privacy, confidentiality and anonymity of users of e-commerce systems.

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Full text: content.pdf (157,123 bytes) (available to registered users only)

Series: w78:2001 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.commerce (0.121775) class.environment (0.033381) class.impact (0.024337)
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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.


Eastman C M

Conceptual modeling in architectural design

Abstract: This paper discusses conceptual design from the perspective of U.S. architectural practice. During the previous twenty years of computer-aided architectural design, the underlying paradigm has mimicked a paper-based technology. As a result, the computer has not significant- ly impacted conceptual design approaches. The future of design, however, is proposed to be in building modeling. A short review of building modeling is provided. Some prospects for conceptual design, based on building modeling and new technologies, are proposed

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Full text: content.pdf (3,703,624 bytes) (available to registered users only)

Series: w78:1988 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.impact (0.066621) class.environment (0.060648) class.synthesis (0.025265)
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Permission to reproduce these documents has been graciously provided by the Lund University and the Swedish Building Centre. The assistance of the editors, Prof. Per Christiansson and Prof. Henry Karlsson, is gratefully appreciated.


Janne Porkka, Kalle Kähkönen

Software development approaches and challenges of 4D product models

Abstract: Experiences from projects utilizing 4D have been promising. Several companies together with researchers have seen 4D applications as potential products for lucrative business. The promising business prospects have resulted in numerous more and less intuitive attempts to develop such products. This paper draws commonalities from various approaches and reviews 4D applications from the viewpoint of product models. It is considered that now it is an appro-priate time to look at the development strategies and achievements so far, and, based on lessons learned show the way forward. First the principles for reaching 4D product models are covered. Various approaches in current commercial 4D appli-cations are considered. One of the solutions used as ground information is Visual Product Chronology (VPC), devel-oped by VTT. Second the paper addresses the obvious challenges of 4D product models. There are obstacles waiting to be resolved before 4D is comprehensively harnessed for project management purposes. One of these obstacles is standardization, or more specifically the lack of it. One of the most potential formats for open BIM standard is Industry Foundation Classes (IFCs). The use of IFCs for scheduling and 4D purposes is discussed. Finally new approaches from on-going research project 4DLive are addressed; preliminary results recognized are 1) open communication protocol for application integration, and 2) building site scenery linkage to product modelling. Possibilities and benefits exist on advanced designing and marketing solutions.

Keywords: BIM, 4D, scheduling, data exchange

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Full text: content.pdf (525,317 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Markus Bauer, Jaime Acevedo-Alvarez

ICONDA: History And Prospects Of An International Information System (Publishing, Retrieval And Dissemination)

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Full text: content.pdf (3,694,190 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Rubinstein, M. and Salagnac, J-L.

Interest and Prospects of Robotics in Construction

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Full text: content.pdf (746,628 bytes) (available to registered users only)

Series: w78:1986 (browse)
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Semenov V,Anichkin A,Morozov S,Tarlapan O,Zolotov V

Effective project scheduling under workspace congestion and workflow disturbance factors

Abstract: Effective project management implies the use of advanced planning and scheduling methods that allow to determine the feasible sequences of activities and to complete a project on time and on budget. Traditional scheduling tools like fundamental Critical Path Method (CPM) and various methods for Resource Constrained Project Scheduling Problem (RCPSP) and Time Constrained Project Scheduling Problem (TCPSP) have many shortcomings for the construction projects where spatial factor plays critically important role. Previously taken attempts to interpret space as a specific resource were successful for particular problems of line-of-balance scheduling, space scheduling, dynamic layout planning, horizontal and vertical logic scheduling, workspace congestion mitigating, scheduling multiple projects with movable resources, spatial scheduling of repeated and grouped activities, motion planning. However, none of these methods considers the spatio-temporal requirements in a holistic framework of generic RCPSP problem and provides feasible results accounting for workspace and workflow factors. In the paper we start with the classical RCPSP statement and then present mathematically strong formalization of the extended generalized problem taking into account workspace congestion and workflow disturbance constraints specified in practically meaningful and computationally constructive ways. For the generalized RCPSP problem an effective scheduling method is proposed. The method tends to minimize the project makespan while satisfying timing constraints and precedence relations, not exceeding resource utilization limits, avoiding workspace congestion and keeping workflows continuous. The method reuses so-called serial scheduling scheme and provides for additional computational routines and heuristic priority rules to generate feasible schedules satisfying all the imposed requirements. Advantages of the method and prospects for its application to industrial needs are outlined in the paper too.

Keywords: planning and scheduling,resource-constrained project scheduling problem,priority rules,4D modeling,workspace management

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Full text: content.pdf (1,073,690 bytes) (available to registered users only)

Series: convr:2013 (browse)
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Toma˛ Pazlar, ˇiga Turk

Evaluation of IFC optimization

Abstract: Today Industry Foundation Classes (IFC) with considerable number of implementations presents almost “de-facto” standard in the Building Information Modelling (BIM). The idea of architecture, engineering, construction and facility management (AEC-FM) software interoperability may be easy understandable but the current standard implementations performances are not always satisfying. Although various deficiencies can be concluded from evalua-tion reports and the pilot projects presented research focuses only on model optimization issues. IFC files generated with the most commonly used architectural design applications are as a rule not optimal regarding the record length and as deduced from previous research work several easily resolved optimization procedures could be applied. Pre-sented case study is based on Solibri IFC Optimizer, the only IFC optimization tool available. Several simple and com-plex models were tested and optimization results have been closely examined. Prospects and constraints of presented optimization are discussed at paper closing.

Keywords: BIM - building information model, IFC - industry foundation classes, interoperability, optimization, soli-bri IFC optimizer

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Full text: content.pdf (233,304 bytes) (available to registered users only)

Series: w78:2007 (browse)
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