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Journal Cover Australasian Journal of Construction Economics and Building
  [SJR: 0.173]   [H-I: 2]   [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  [7 journals]
  • Safety Leadership Defined within the Australian Construction Industry

    • Authors: Luke Daniel
      Pages: 1 - 15
      Abstract: This research explores the tenets of safety leadership within the Australian construction environment. The scope of this research aims to establish a universal definition of safety leadership and how it differs from other leadership disciplines. The literature review into this topic was governed by the parent disciplines of Safety and Leadership.  Gaps were identified in the literature that indicated safety leadership is not a well-defined concept and much of the work into safety leadership has been borrowed from other schools of leadership. An exploratory research methodology was utilised which rooted the research into the post-positivist methodology. There were twenty interviews conducted for this research, with participants coming from various leadership positions across multiple construction projects around Australia. Findings detailed a saturation of data that allowed for an empirical definition towards safety leadership to be established. As a person’s scope of responsibility increases, their view of safety leadership becomes synonymous with leadership; although differences do exist. These differences were attributed to the importance of demonstrating safety and working within the legal framework of Australian construction projects. It is proposed that this research offers a substantial contribution to knowledge, based upon a well-defined definition into safety leadership. 
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • Construction Procurement: Modelling Bidders’ Learning in Recurrent

    • Authors: Bee Lan Oo, Florence Yean Yng Ling, Alexander Soo
      Pages: 16 - 29
      Abstract: Construction remains a significant area of public expenditure. An understanding of the process of changes in construction pricing, and how the process can be manipulated through the release of bidding feedback information is vital, in order to best design clients’ procurement policies. This paper aims to statistically model inexperienced individual bidders’ learning in recurrent bidding under partial and full information feedback conditions. Using an experimental dataset, the developed linear mixed model contains three predictor variables, namely: time factor, information feedback conditions, and bidding success rate in the preceding round. The results show nonlinearity and curvature in the bidders’ learning curves. They are generally less competitive in time periods after a winning bid with lower average bids submitted by those subjected to full information feedback condition. In addition, the model has captured the existence of heterogeneity across bidders with individual-specific parameter estimates that demonstrate the uniqueness of individual bidders’ learning curves in recurrent bidding. The findings advocate for adequate bidding feedback information in clients’ procurement design to facilitate learning among contractors, which may in turn lead to increased competitiveness in their bids.
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • Influence of External Environmental Factors on the Success of Public
           Housing Projects in Developing Countries

    • Authors: Mohammed Mukhtar Musa, Roslan Bin Amirudin, Trevor Sofield, Mohammed Aminu Musa
      Pages: 30 - 44
      Abstract: External environmental factors, which include political environment, economic environment and social environment, affect the success of public housing projects in developing countries. The purpose of this paper is to establish the effect of these factors on public housing project success using structural equation modelling (SEM) techniques.  The study was conducted in Nigeria by means of interviews, a pilot study and a main survey. Five hundred and fifty (550) questionnaires were administered to construction professionals who work as developers, consultants or contractors and those working in public housing agencies. Two hundred and seventy-six (276) questionnaires were returned completed.  The data collected were analysed by means of SEM. The results reveal that (i) the economics factor significantly affects public housing project success, (ii) the social factor significantly affects public housing project success, and (iii) the political factor significantly affects public housing project success. The study developed a comprehensive model that can assist housing policy makers, consultants, developers, contractors and other stakeholders in the planning and development of public housing programmes. 
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • Predictor Role of Profession in Explaining Personal Value Priorities and
           Conflicts between Construction Stakeholders

    • Authors: Babak Panahi, Elena Moezzi, Christopher Preece, Wan Zakaria, John Rogers
      Pages: 45 - 62
      Abstract: This study investigated the relationship between “profession” and personal values to explain the potential conflicts between various groups of construction stakeholders. In this study, personal values of three professional groups of project consultants including architects, engineers, and quantity surveyors were assessed through questionnaire survey in the Malaysian construction industry. Using comparative analysis, the personal value priorities and conflicts between these professional groups of stakeholders were identified. The research findings indicated dissimilar patterns of personal values which explain potential conflicts between the stakeholders with different professions in the Malaysian construction industry. Therefore, this research confirmed the predictor role of “profession” variable in explaining personal values although this relationship was an ambiguous issue in the extant literature. This research, through identifying the value priorities of different groups of construction stakeholders, provides better understanding of their different needs, expectations, and preferences which would help project managers to have better perception of the potential conflicts between these groups of construction stakeholders. 
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • Critically Reflective Pedagogical Model: a Pragmatic Blueprint for
           Enhancing Learning and Teaching in Construction Disciplines

    • Authors: Imriyas Kamardeen
      Pages: 63 - 75
      Abstract: University lecturers who aspire to provide an improved learning experience for their students continually, and be recognised for high quality teaching should embrace a critically reflective practice. Nonetheless, developing as a reflective lecturer is challenging, although there are pedagogical literatures as general guidelines. This study introduces a new pedagogical model of critically reflective practice to simplify the efforts for lecturers and to shorten their journey to becoming effective teachers. A two-phased action research strategy was adopted for the development and validation of the new model. The first phase operationalised the Brookfield’s four-lens framework to create a reflective teaching practice model, which was then validated with a case study in the second phase. The model offers a pragmatic blueprint for lecturers to build a career with sustained quality of teaching, which in turn translates into improved learning experiences for students.
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • Green Roof Evaluation: A Holistic ‘Long Life, Loose Fit, Low
           Energy’ Approach

    • Authors: Craig Langston
      Pages: 76 - 94
      Abstract: Green roofs have potential to improve the social and environmental performance of detached housing in Australia, yet often they are overlooked due to prohibitive capital cost and a range of other perceptions that are difficult to quantify. A classic evaluation problem is invoked that must balance short and long term benefits. Using two distinct designs of the same floor area, green roof and traditional housing prototypes are analysed to determine the relative ‘breakeven’ point when long-term benefits become feasible. It is discovered that green roofs are unlikely to be viable in their own right, but when coupled with an overall design strategy of long life (durability), loose fit (adaptability) and low energy (sustainability) they can deliver least cost (affordability) over time as well as unlock valuable social and environmental rewards. This outcome can be realised within 25% of a home’s expected design life of at least one hundred years. The results demonstrate that residential green roofs, when integrated as part of a holistic approach, can be both individually and collectively justified on key economic, social and environmental criteria, and are therefore able to claim a valuable contribution towards wider sustainable development goals.
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • The New Zealand Construction Contracts Amendment Act 2015 - For Better or

    • Authors: David Finnie, Naseem Ameer Ali
      Pages: 95 - 105
      Abstract: Adjudication has been statutorily introduced as an alternative dispute resolution method in 14 jurisdictions including New Zealand. Whilst adjudication under the New Zealand Construction Contracts Act 2002 has been hailed a success, further refinements were proposed in the Construction Contracts Amendment Bill first published in 2013. As part of the legislative process, 48 submissions were made to the Commerce Committee. There was general support for most of the amendments, but some parties expressed concerns on some of the changes. A documentary analysis of the Amendment Bills and submissions to the Commerce Committee was made to critically evaluate the changes proposed and establish if they were improvements. The findings show the major changes proposed include (i) removing most of the distinctions between the treatment of residential and commercial contracts under the Act, (ii) extending the scope of the Act to apply to contracts for certain professional services, (iii) removing the distinction between enforcement of payment determinations and of those relating to rights and obligations, and (iv) making the enforcement process more efficient. The findings also show that during a period of over two years from when the Bill was first introduced in January 2013, one other significant improvement for retentions to be held in trust was made. A few proposals to further refine the Bill such as the suggestion to mandate retentions to be kepts in a separate trust account were however not accepted. The Construction Contract Amendment Bill (Bill 97-3) was uninanimously passed during the third and final reading in Parliament on 20 October 2015 with most of the amendments coming into force on 1 December 2015, those incorporating professional services on 1 September 2016, and the retention provisions on 31 March 2017. Royal assent was given on 11 October 2015 leading to the enactment of the Construction Contracts Amendment Act 2015.
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • What is to be Done? : Climate Change for Beginners

    • Authors: Abbas Elmualim
      Pages: 106 - 107
      Abstract: Bon, Ranko (2014). What is to be done? : Climate Change for Beginners. Hesperiaedu, Belgrade. 150 pages. ISBN: 978-8679560735
      PubDate: 2015-11-23
      Issue No: Vol. 15, No. 4 (2015)
  • A BIM-Info delivery protocol

    • Authors: Martin Hooper, Anders Ekholm
      Pages: 39 - 52
      Abstract: Today, with many of the technological issues of integrated information management resolved (perhaps excluding the matter of interoperability), defining the content and status of BIM information deliveries remains both a practical and a theoretical problem. New BIM tools and new design processes and procedures have led to a certain confusion of what information is needed for particular BIM uses. This paper seeks to explore and enable a method of defining the content of model information deliverables through a review of 2 key primary specific BIM uses: 3d Design Coordination and Early Energy Appraisal through an analysis of practical application. The scope of this study is limited to a review of information flow within residential projects in a Swedish context and looks at two projects with a view to identify and establish a common definition of the key BIM objects and properties necessary for particular tasks. The key deliverable from this study is the BIM-Info Delivery Protocol (IDP) which attempts to align consultant BIM-information delivery expectations and represents a tangible solution to assist consultants to manage BIM information. Concluding reflections consider the positioning of the IDP relative to the on-going development of IDMs / MVDs and highlight the key constituent parameters of an Information Delivery Specification (IDS).  
      PubDate: 2015-10-15
      Issue No: Vol. 15, No. 3 (2015)
  • The use of cloud enabled building information models – an expert

    • Authors: Alan Redmond, Roger West
      Pages: 53 - 67
      Abstract: The dependency of today’s construction professionals to use singular commercial applications for design possibilities creates the risk of being dictated by the language-tools they use. This unknowingly approach to converting to the constraints of a particular computer application’s style, reduces one’s association with cutting-edge design as no single computer application can support all of the tasks associated with building-design and production. Interoperability depicts the need to pass data between applications, allowing multiple types of experts and applications to contribute to the work at hand. Cloud computing is a centralized heterogeneous platform that enables different applications to be connected to each other through using remote data servers. However, the possibility of providing an interoperable process based on binding several construction applications through a single repository platform ‘cloud computing’ required further analysis. The following Delphi questionnaires analysed the exchanging information opportunities of Building Information Modelling (BIM) as the possible solution for the integration of applications on a cloud platform. The survey structure is modelled to; (i) identify the most appropriate applications for advancing interoperability at the early design stage, (ii) detect the most severe barriers of BIM implementation from a business and legal viewpoint, (iii) examine the need for standards to address information exchange between design team, and (iv) explore the use of the most common interfaces for exchanging information. The anticipated findings will assist in identifying a model that will enhance the standardized passing of information between systems at the feasibility design stage of a construction project.
      PubDate: 2015-10-15
      Issue No: Vol. 15, No. 3 (2015)
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