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The Bridge Between Contractors And Consultants
For the past five years, I have been working as an employee of EIC Activities (a member of the CIMIC Group) as an in- housegeotechnicalengineeringadvisorprovidingtechnicalsupporttoCIMICGroupcompanies. Thisisanon-traditional role for a design engineer in the Australian civil infrastructure industry, as most design engineers work for consulting firms operating independently from construction companies and are engaged in project-specific contracts. Being in this unique role has allowed me to understand the operations of contractors, while building upon my technical skills acquired in the previous stage of my career as a geotechnical engineer in a more traditional role within a consulting firm. The perspectives I have gained from both forms of engagement have allowed me to effectively form a bridge between contractors and consultants.
One of the primary objectives of my current role is to contribute to creating value and minimising risk on projects and tenders. This objective influences the behaviours and approaches I take in my role. Using a number of case studies, this paper will discuss some of the actions and mindset my colleagues and I have adopted to fulfil this objective whilst bridging the contractor-consultant gap.
Innovation projects take place in addition to our existing project commitments to advance our knowledge in the pursuit of value creation and risk minimisation in the long term. Some innovation projects involve funded partnerships with universities to undertake research into challenges on construction projects. Such collaborations facilitate much needed dialogue between universities and the industry, and further cements our role as a bridge, in this case, between construction and academia.
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Effects Of Stone Column Installation
Lateral soil displacements caused by stone column installation can be estimated using analytical methods. These analytical methods have been used to assess lateral movements measured during installation of single stone columns and generated by installation of a group of columns. The analytical methods were able to closely match lateral displacements during installation of single stone columns but were less accurate for group installation. Excess pore pressures generated by installation of the group of stone columns was also measured and the peaks could be reasonably approximated using analytical methods. Installation of the group of columns was also simulated using finite element methods. A numerical model based on in-situ and laboratory test data produced similar results to the analytical methods. Refinement of the parameters to better fit the measured data required a four order of magnitude increase in the permeability. It is speculated that such an increase in permeability is created by fracturing of the soft clay during installation of the stone columns. A finite element limit analysis was performed to assess whether the soft clay would be squeezed into the columns. The results of the assessment suggest that it is unlikely that the soft clay would penetrate further than about 2 rows of stone particles.
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Geotechnical Investigations For Piling Projects – The False Economy Of A Cheap Site Investigation
An adequate geotechnical site investigation is the corner-stone of any successful ground engineering project. However, in the current commercial environment, the scope of site investigations for piling projects is often minimised to the detriment of the project.
Inadequate geotechnical information precludes economical pile design and often leads to qualified piling tenders.This paper summarises the current state of practice in Victoria in relation to site investigation for piling projects. Some hypothetical examples are presented which demonstrate the additional piling costs that can arise due to inadequate site investigation. These additional costs usually substantially outweigh the small up-front saving that may be achieved on site investigation works. While not actual case studies, the examples given are representative of real projects and realistic cost outcomes.
While a detailed discussion of site investigation requirements for piling projects is beyond the scope of this paper, some practical recommendations are given for those involved in engaging site investigation consultants.
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Working Platform Assessments for Tracked Plant
Phil McKenzie & Bruce MacPherson
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A Study of Direct Shear Testing using a Large Shear Box
Dr Stephen Fityus, The University of Newcastle