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Abukhder, J S A (2004) A study of the management process on construction projects, and the development of a new notation system, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Al-Hajj, A N (1991) Simple cost-significant models for total life-cycle costing in buildings, Unpublished PhD Thesis, , University of Dundee.
Almalki, T S (2015) A study of the influence of trust on the relationships between team members in engineering projects, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Asif, M (1988) Simple generic models for cost-significant estimating of construction project costs, Unpublished PhD Thesis, , University of Dundee.
Chitengi, H S (2015) Deriving lessons for urban planning and housing delivery from the resilience of informal housing systems in Zambia, Unpublished PhD Thesis, School of Social Sciences, University of Dundee.
Forbes, D (2008) Identification and analysis of risks in the sustainability assessment of housing, Unpublished PhD Thesis, , University of Dundee.
Gaber Abubakar, A (2016) Factors affecting maintenance labour productivity in the building industry, Unpublished PhD Thesis, Division of Civil Engineering, University of Dundee.
Hossain, M K (2015) Investigating the relationship between the culture of construction project-based organisations and the implementation of building information modelling, Unpublished PhD Thesis, School of Science and Engineering, University of Dundee.
Jarkas, A M (2005) An investigation into the influence of buildability factors on productivity of in situ reinforced concrete construction, Unpublished PhD Thesis, Division of Civil Engineering, University of Dundee.
Kiwan, M S A A (1994) Integration of building design and construction information: A neutral object-oriented model, Unpublished PhD Thesis, , University of Dundee.
McGowan, P H (1994) Integrated cost and time models for measuring, valuing and controlling construction projects, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Noor, I (1992) A study of the variability of labour productivity in building trades, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Pearson, A D (2014) An investigation of climatically responsive ultra-low energy housing in rural Scotland: a case study, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Radosavljevic, M (2003) Chaos in construction: labour productivity and its impact on planning and organisation of firms, Unpublished PhD Thesis, Division of Civil Engineering, University of Dundee.
Saket, M M (1986) Cost-significance applied to estimating and control of construction projects, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Simon, M (2010) The commitment to corporate social responsibility of construction companies in the United Kingdom and Germany, Unpublished PhD Thesis, , University of Dundee.
Taha, M (2022) Identifying legal frameworks impacting institutional investors' participation in infrastructure projects, Unpublished PhD Thesis, , University of Dundee.
Talhouni, B T K (1990) Measurement and analysis of construction labour productivity, Unpublished PhD Thesis, Department of Civil Engineering, University of Dundee.
Thomson, C S (2006) A study of the innovation process within the construction project environment, Unpublished PhD Thesis, Division of Civil Engineering, University of Dundee.
Ward, S A (2015) Critical success factors for lean construction intervention, Unpublished PhD Thesis, Division of Civil Engineering, University of Dundee.
Whitehead, R C (1995) Factors influencing labour productivity on construction sites, Unpublished PhD Thesis, , University of Dundee.
Zakieh, R (1991) Quantity-significance and its application to construction project modelling, Unpublished PhD Thesis, , University of Dundee.
- Type: Thesis
- Keywords: accuracy; duration; market; construction project; reinforced concrete; feedback; markets; site operations; variations; estimator
- ISBN/ISSN:
- URL: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251110
- Abstract:
Quantity-significant items (QSI) are defined as those items whose quantities are greater than the mean quantity of similar items within one trade. It has been found that QSI's number about 30% of the items in a trade. They consistently contribute about 80% of the quantities and 80% of the value. This relationship, from which the principle of quantity-significance derives, has been used to develop new integrated cost and time models. These allow the prediction of the total project value and duration by using only a small fraction of the elements traditionally used in conventional methods. The models which are based upon quantity-significant work packages and operations QSWP and QSWO) have been developed and tested using historical projects of two sorts; reinforced concrete bridges and structural steel framed supermarkets. The accuracy of the models at detailed design stage was within 4% for both cost and time estimation. At feasibility stage, the models could predict the total cost to within 11%. The effect of using the models on the final account has also been considered. Three methods of dealing with variations have been proposed. Two of these methods have been shown to yield very accurate long term results. In the short term, individual errors of the order of 3.75% in 2/3 of cases have been predicted. Since the same elements (i.e. QSWO's) are used for both cost and time estimation, and because they are related to site activities, the detailed models can be used to provide an effective mechanism for control of site operations and feedback to estimators.