The development of a project and site investigation risk evaluation model
Ashton, P. and Gidado, K.I. (2003) The development of a project and site investigation risk evaluation model In: Greenwood, D., ed. Association of Researchers in Construction Management nineteenth annual conference, 2003 September 3-5, University of Brighton. ARCOM, Reading, pp. 403-412. ISBN 0953416186
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Official URL: http://www.arcom.ac.uk/publications/procs/ar2003-4...
This paper describes the development of a model that could be used in practice to improve Site Investigation (SI) procedures and reduce risk associated with uncertain site conditions. The developed model Project and Site Investigation Risk Evaluation Model (PSIREM) ultimately provides a reliable means of presenting both the SI data and the complexity of the project relative to SI information, thereby providing the opportunity to assess the risk associated with a specific project and the inadequacy of available SI information. Despite the wealth of knowledge and information available, the UK construction industry seems to be failing in the use of these existing models and systems to improve decision making for site investigation work. A questionnaire survey of over 1,000 construction practitioners revealed that less than 1% used any form of risk assessment method specific to site and ground conditions. Whilst 23% admitted that their only attempt to carry out any kind of risk assessment was to satisfy the requirements of the Construction (Design and Management) Regulations (CDM 1994).The work described in this paper is based upon data and information collected from a literature search, questionnaire survey, and semi/structured interviews. This research has been used to develop a model (PSIREM) for the appraisal of risk associated with site investigation. Case studies of 36 selected construction projects within the UK have been carried out. The developed PSIREM has been used, together with the findings of the case studies, to objectively measure the level of risk and to develop a mapping risk index associated with an inadequate site investigation. This provides a concise appraisal of risk associated with uncertain site investigation information, which clients/practitioners can map against to establish a prediction of he risk they are exposed to for any given project.
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