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Australasian Journal of Construction Economics and Building
   [6 followers]  Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Print) 1445-2634 - ISSN (Online) 1837-9133
     Published by University of Technology Sydney Homepage  [6 journals]   [SJR: 0.13]   [H-I: 2]
  • Managing geotechnical risk on US design-build transport projects

    • Authors: Kevin McLain, Douglas D. Gransberg, Micheal C. Loulakis
      Pages: 1 - 19
      Abstract: Awarding design-build (DB) contracts before a complete subsurface investigation is completed, makes mitigating the risk of differing site conditions difficult, if not impossible. The purpose of the study was to identify effective practices for managing geotechnical risk in DB projects, and it reports the results of a survey that included responses from 42 of 50 US state departments of transportation and a content analysis of DB requests for proposals from 26 states to gauge the client’s perspective, as well as 11 structured interviews with DB contractors to obtain the perspective from the other side of the DB contract.  A suite of DB geotechnical risk manage tools is presented based on the results of the analysis. Effective practices were found in three areas: enhancing communications on geotechnical issues before final proposals are submitted; the use of project-specific differing site conditions clauses; and expediting geotechnical design reviews after award. The major finding is that contract verbiage alone is not sufficient to transfer the risk of changed site conditions. The agency must actively communicate all the geotechnical information on hand at the time of the DB procurement and develop a contract strategy that reduces/retires the risk of geotechnical uncertainty as expeditiously as possible after award.
      PubDate: 2014-03-24
      Issue No: Vol. 14, No. 1 (2014)
  • Applying total interpretive structural modeling to study factors affecting
           construction labour productivity

    • Authors: Sayali Shrikrishna Sandbhor, Rohan P. Botre
      Pages: 20 - 31
      Abstract: Construction sector has always been dependent on manpower. Most of the activities carried out on any construction site are labour intensive. Since productivity of any project depends directly on productivity of labour, it is a prime responsibility of the employer to enhance labour productivity. Measures to improve the same depend on analysis of positive and negative factors affecting productivity. Major attention should be given to factors that decrease the productivity of labour. Factor analysis thus is an integral part of any study aiming to improve productivity.  Interpretive structural modeling is a methodology for identifying and summarizing relationships among factors which define an issue or problem. It provides a means to arrange the factors in an order as per their complexity. This study attempts to use the latest version of interpretive structural modeling i.e. total interpretive structural modeling to analyze factors negatively affecting construction labour productivity. It establishes interpretive relationship among these factors facilitating improvement in the overall productivity of construction site.
      PubDate: 2014-03-25
      Issue No: Vol. 14, No. 1 (2014)
  • Factors influencing decisions on delay claims in construction contracts
           for Indian scenario

    • Authors: Nitin Balkrishna Chaphalkar, K. C. Iyer
      Pages: 32 - 44
      Abstract:   Construction industry in India is second largest next to agriculture. In current era of infrastructure development construction projects occupy a key position. In any construction project contract time and cost overrun is a common feature, which gives rise to claims leading to disputes. These disputes if not handled properly tend to consume time and money of all parties to the contract. To resolve the dispute in optimum time, it is essential to understand the root cause of disputes as early as possible. Hence there is a need of analyzing the disputes scientifically.  The present study reveals from the study of arbitration awards that the causes for delay claims can be grouped in domains and the probable decisions to the disputes can be traced through the probing questions considered by decision makers. This paper attempts to identify questions related to disputes for Indian scenario through literature, arbitration awards, court cases and discussions with professionals.
      PubDate: 2014-03-25
      Issue No: Vol. 14, No. 1 (2014)
  • Maturity and maturity models in lean construction

    • Authors: Claus Nesensohn, David James Bryde, Edward Ochieng, Damian Fearon
      Pages: 45 - 59
      Abstract: In recent years there has been an increasing interest in maturity models in management-related disciplines; which reflects a growing recognition that becoming more mature and having a model to guide the route to maturity can help organisations in managing major transformational change. Lean Construction (LC) is an increasingly important improvement approach that organisations seek to embed. This study explores how to apply the maturity models to LC. Hence the attitudes, opinions and experiences of key industry informants with high levels of knowledge of LC were investigated. To achieve this, a review of maturity models was conducted, and data for the analysis was collected through a sequential process involving three methods. First a group interview with seven key informants. Second a follow up discussion with the same individuals to investigate some of the issues raised in more depth. Third an online discussion held via LinkedIn in which members shared their views on some of the results. Overall, we found that there is a lack of common understanding as to what maturity means in LC, though there is general agreement that the concept of maturity is a suitable one to reflect the path of evolution for LC within organisations.
      PubDate: 2014-03-22
      Issue No: Vol. 14, No. 1 (2014)
  • Mapping site-based construction workers’ motivation: Expectancy
           theory approach

    • Authors: Parviz Ghoddousi, Nima Bahrami, Nicholas Chileshe, M.Reza Hosseini
      Pages: 60 - 77
      Abstract: The aim of this study is to apply a recently proposed model of motivation based on expectancy theory to site-based workers in the construction context and confirm the validity of this model for the construction industry. The study drew upon data from 194 site-based construction workers in Iran to test the proposed model of motivation. To this end, the structural equation modelling (SEM) approach based on the confirmatory factor analysis (CFA) technique was deployed. The study reveals that the proposed model of expectancy theory incorporating five indicators (i.e. intrinsic instrumentality, extrinsic instrumentality, intrinsic valence, extrinsic valence and expectancy) is able to map the process of construction workers’ motivation. Nonetheless, the findings posit that intrinsic indicators could be more effective than extrinsic ones. This proffers the necessity of construction managers placing further focus on intrinsic motivators to motivate workers. 
      PubDate: 2014-03-21
      Issue No: Vol. 14, No. 1 (2014)
  • Quality of road construction projects in Sweden between 1990 and 2010

    • Authors: Abukar Warsame, Han-Suck Song, Hans Lind
      Pages: 78 - 87
      Abstract: It has been reported that productivity developments in construction are slow compared to other sectors. Measuring productivity is however not easy and it might have been underestimated due to deficiencies in the index that is used when the value added in current prices is converted into value added at constant prices. A central problem when deflating nominal prices is that the deflation should only take away price changes for identical products and not price changes related to quality changes and improvements necessitated by new environmental conditions and legislation as well as demand for higher safety. The aim of this project is to help fill this gap by looking at the quality changes over time in road construction. A combination of comparative studies and interviews with practitioners from public and private sectors that are involved in road construction projects were conducted. It was found that there had been both direct quality changes in the roads, primarily to improve safety on the roads and for noise protection, and indirect quality changes related to building in more difficult circumstances because of giving higher weight to other social objectives, especially environmental objectives. As these quality increases are not taken into account when productivity is measured, productivity improvements could be underestimated by around 1% per year. 
      PubDate: 2014-03-27
      Issue No: Vol. 14, No. 1 (2014)
  • Sustainability: Its adaptation and relevance in remote area housing

    • Authors: Rosemarie Rusch, Rick Best
      Pages: 88 - 104
      Abstract: Little consideration has been given to the context of housing in remote areas.  It is important for the economic survival of many remote communities that appropriate and sustainable housing solutions are decided and implemented.This report examines housing at St Pauls, Moa Island in the Torres Strait, using site information, historical research and a review of cultural and geo-political factors to compare the current model with similar studies in self-build housing undertaken in the region between 1986 and 1992. It not only demonstrates tangible economic benefits, but also evaluates the environmental and social improvements which can be achieved with a re-examination of the existing model.  It is important to consider the value of investing in policies and practices of sustainable development that can play a pivotal role in potential capacity building within such communities.Current land tenure policy means that families wishing to own their own homes must leave St Pauls, or build illegally.  Economically they cannot establish businesses so must leave the island or remain on welfare.  The result of this is an exponential increase in the cost of providing community housing and the associated increase in social and health stresses.  Acknowledgement at a policy level of the links between social and emotional well-being, and ‘Closing the Gap’ initiatives, have the potential to offer a wide range of funding opportunities and innovative approaches to solving the housing crisis in remote Australia, if they can be implemented in an open and effective manner.
      PubDate: 2014-03-25
      Issue No: Vol. 14, No. 1 (2014)
  • The benefits of, and barriers to, implementation of 5D BIM for quantity
           surveying in New Zealand

    • Authors: Ryan Stanley, Derek Pierre Thurnell
      Pages: 105 - 117
      Abstract: Building Information Modelling (BIM) models are relational and parametric in nature, and 5D BIM is where model objects include specification data and other properties which can be directly used for pricing construction work. There is huge potential for its use by quantity surveyors (QSs) for such tasks as quantity take-offs, estimation and cost management, in a collaborative project environment. Perceptions regarding the benefits of, and barriers to, the implementation of 5D BIM by quantity surveyors in Auckland are presented, based on structured interviews with 8 QSs. Results suggest that 5D BIM may provide advantages over traditional forms of quantity surveying in Auckland by increasing efficiency, improving visualization of construction details, and earlier risk identification. However there are perceived barriers to 5D BIM implementation within the construction industry: a lack of software compatibility; prohibitive set-up costs; a lack of protocols for coding objects within building information models; lack of an electronic standard for coding BIM software, and the lack of integrated models, which are an essential pre-requisite for full inter-operability, and hence collaborative working, in the industry. Further research is recommended, to find solutions to overcome these barriers to inter-operability between 3D and 5D BIM, in order to facilitate the cost modelling process.
      PubDate: 2014-03-26
      Issue No: Vol. 14, No. 1 (2014)
  • Review on the fundamental usage of Bills of Quantities (BQ) by contracting

    • Authors: Shamsulhadi Bin Bandi, Fadhlin Abdullah, Roslan Amiruddin
      Pages: 118 - 131
      Abstract: Detail literature review indicates a growing concern over the purpose of the BQ to the practice and needs of contracting organisations. However, the number of studies dedicated to comprehensively review how BQ is used by these organisations is limited. This review is conducted with the aim to identify the fundamental usage of BQ to contracting organisations; especially within the parameter of a project period and management functions. The main three objectives are: (1) to comprehensively identify relevant literature concerning the usage of BQ to contracting organisations, (2) to review the literature in order to identify the usage of BQ to contracting organisations, and (3) to systematically synthesize the outcome of the review in order to identify the fundamental usage of BQ to contracting organisations. Various literature findings are reviewed and validated to support the study’s outcome. As a result, this study manage to identify thirty fundamental usage of BQ arranged according to the parameter of interest. The significance of this study supports the evident usage of BQ by contracting organisations. It further enhances the current knowledge pertaining to its application in the industry and advancing further research pertaining on the application of BQ in the construction industry.
      PubDate: 2014-03-26
      Issue No: Vol. 14, No. 1 (2014)
  • Whole life costing: a new approach

    • Authors: Craig Langston
      Pages: 132 - 134
      Abstract: Peter Caplehorn, Routledge, London, 2012 136 pp., ISBN 978-0-415-43423-2, GBP 34.99 (pb)
      PubDate: 2014-03-27
      Issue No: Vol. 14, No. 1 (2014)
  • Whole life sustainability

    • Authors: PC Thomas
      Pages: 135 - 136
      Abstract: Ian Ellingham and William Fawcett, RIBA Publishing, London, 2013, 160 p., ISBN 978 1 85946 450 2, AUD 56.84, GBP 30.84, USD 51.17
      PubDate: 2014-03-27
      Issue No: Vol. 14, No. 1 (2014)
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