Spies P.,New Zealand Transport Agency |
Proceedings - Rapid Excavation and Tunneling Conference | Year: 2013
The selection of the Procurement method for major projects often has a significant outcome on the ultimate delivery of a project. The $1.2B Waterview Connection project is the largest and most complex project yet undertaken by the New Zealand Transport Agency and consideration was given to many contract forms. This paper describes the NZTA decision process in adopting the competitive alliance model, and more particularly measures taken during the procurement process to achieve certainty with respect to outcomes and minimize project risks whilst also achieving value for money. Refinements to the procurement process to ensure compliance with the Code of Practice for Risk Management of Tunnel Works prepared by the International Tunnel Insurance Group are described along with the other risk mitigation measures applied to achieve a successful procurement outcome. Also described is the alliance commercial model which serves to both facilitate collaboration between the Contracting consortia and Client to achieve "best for project" outcomes as well as managing commercial risks for all participants.
Calder M.,Aurecon |
Kennedy D.M.,University of Melbourne
Journal of Coastal Research | Year: 2013
Ground penetrating radar (GPR) is a new technique in field sciences and is now commonly applied to studies of coastal dunes and beaches. The technique has yet to be applied on hard rocky coasts, and its ability to discern subsurface stratigraphy has great potential for investigating landform evolution on tectonically active shorelines where erosional surfaces are often buried by sediments derived from marine and nonmarine sources. In this study, we test the resolution of a 100- and 250-MHz GPR system on a series of Holocene uplifted shore platforms and gravel beaches in Wellington, New Zealand. The sediment thickness at the sites investigated ranged from a thin veneer to many meters and is composed of a mix of sand and gravel-sized material. It was found that the 100-MHz antenna did not have the resolution of the 250-MHz antenna and could not distinguish the buried platform surface. Using the 250-MHz antenna, bedding features within the unconsolidated sediment and the bedrock-sediment interface could be discerned. The high relief of the bedrock (meter scale), which outcropped on the surface, and the presence of buried boulders caused significant interference to the radar profiles through the creation of multiple and hyperbolic reflections. Despite these reflections, the GPR was able to quantify the morphology of the buried shore platform, thus indicating the utility of this technique for rocky coast research. © 2013, the Coastal Education & Research Foundation (CERF).
EngineerIT | Year: 2015
Data centres are strategic business assets and they facilitate a company's performance and the services they are able to provide their customers. The criticality of data centres continues to rise, leading more industry-wide discussions regarding what "mission critical" means and how data centre owners can minimise the risk of downtime in their facilities.
Geotechnical Engineering for Infrastructure and Development - Proceedings of the XVI European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015 | Year: 2015
The study demonstrates the significance of reinforced granular transition zones in controlling the settlement of heavy freight rail formations. The paper focuses on the behaviour characterisation of the transitions for static and dynamic effects through performance monitoring by conventional single-point (total station) and automated, real time (Pile Driving Monitors) surveillance systems, respectively. The track static stiffness was analysed in relation to the measurements of the permanent settlement of the ballast and the substructure (soil creep). The quantification of the vertical deformation under repeated freight movements provides a basis for the estimation of the track dynamic stiffness. The change in the track stiffness due to the presence of transitions was studied as part of this paper. The effects of the different transition configurations were also analysed. © The authors and ICE Publishing: All rights reserved, 2015.
Coasts and Ports 2013 | Year: 2013
The final stage of the third Coal Export Terminal in the Port of Newcastle is nearing completion and will expand the coal export capacity of the Newcastle Coal Infrastructure Group (NCIG) to 66 million tonnes per annum (Mtpa). Completed in 2010, Stage 1 of the terminal was a greenfield project with the largest initial coal export capacity (30 Mtpa) of any Australian coal terminal. Right on the back of Stage 1, NCIG commenced Stage 2AA expansion and increased the coal export capacity to 53 Mtpa in 2012. NCIG is now completing the third expansion (Stage 2F) which will increase the terminal's capacity to the planned maximum 66 Mtpa. The design of the terminal was influenced by four key objectives: a) improving rail logistics by implementing dedicated stockpiles at the terminal and a stockpile driven supply chain; b) maximising coal storage capacity; c) reducing capital and operating expenditure through innovative automation, fewer yard machines and lower operating requirements; and d) improving shiploading efficiencies.
Coasts and Ports 2013 | Year: 2013
The performance of coastal and port structures depends on multiple factors. One of these factors, the "economic viability" is strongly influenced by "lifecycle" consideration. A system to manage coastal assets is proposed in this paper. Responsibility for the performance of coastal and port assets is often the owner incumbent, although many stakeholders become involved and benefit from the functional requirement of these assets. The system has been tested to study lifecycle of seawall revetments and beach nourishments. Low standard seawalls have the lowest lifecycle costs, but the highest risk profile. It is found that the selection of coastal design criteria and design life benefits from a lifecycle assessment. It is also found that seawall and nourishments share similar lifecycle costs and that none of these assets is "maintenance free". Overall, the application of the system shows that the Australian coastal assets are "sweating". These assets could be managed proactively through monitoring on-going continuous degradation.
Coasts and Ports 2013 | Year: 2013
Aurecon in joint venture with Halcrow was retained by Dawei Development Company to assist with the Master Planning and detailed design of the proposed Dawei Port in Myanmar. Through an extensive trade projection study a range of local, national and international cargo origins were identified and potential volumes estimated. This was driving the port configuration as this has to match the cargo type and mode of movement of the cargo. Having gathered all the relevant site data an optimised port configuration was developed which offered significant benefits to the client including reduced capital cost and improved operations. The proposed development will potentially include 8 container berths, 8 dry bulk and 8 liquid bulk berths as well as 27 general cargo berths stretching across some 13,000 m. To accommodate some of the anchor tenants the port will need to be able to cater for large bulk carriers which require significant dredging and reclamation. Working closely with the client a suitable level of flexibility was built into the terminal quay design to optimise flexibility and minimise disruptions in future stages of development.
Proceedings of the Institution of Civil Engineers: Civil Engineering | Year: 2013
The 27 km Peninsula Link in Melbourne, Australia completed a missing section of the city's freeway network in January 2013. It has nine grade-separated interchanges connecting into 11 existing roads and includes three freeway-to-freeway connections. Construction involved 45 separate bridge structures, 3 million m3 of earthworks, 1·5 million trees and shrubs - plus numerous sculptures and artworks. In a national first, the A$759 million (£500 million) project was delivered as an 'availability public-private partnership', enabling it to be delivered tollfree while making use of private-sector innovation in financing, construction and maintenance. It set a new national benchmark for its delivery model, design considerations and construction methods.
Agency: GTR | Branch: NERC | Program: | Phase: Research Grant | Award Amount: 177.35K | Year: 2015
The problem: Building climate change resilience necessarily means building urban resilience. Africas future is dominated by a rapidly increasing urban population with complicated demographic, economic, political, spatial and infrastructural transitions. This creates complex climate vulnerabilities of critical consequence in the co-dependent city-regions. Climate change substantially complicates the trajectories of African development, exacerbated by climate information that is poorly attuned to the needs of African decision makers. Critical gaps are how climate processes interact at the temporal and spatial scales that matter for decision making, limited institutional capacity to develop and then act on climate information, and inadequate means, methods, and structures to bridge the divides. Current modalities in climate services are largely supply driven and rarely begin with the multiplicity of climate sensitive development challenges. There is a dominant need to address this disconnect at the urban scale, yet climate research in Africa is poorly configured to respond, and the spatial scale and thematic foci are not well attuned to urban problems. Most climate-related policies and development strategies focus at the national scale and are sectorally based, resulting in a poor fit to the vital urban environments with their tightly interlocking place-based systems. Response: FRACTALs aim is to advance scientific knowledge about regional climate responses to anthropogenic forcings, enhance the integration of this knowledge into decision making at the co-dependent city-region scale, and thus enable responsible development pathways. We focus on city-region scales of climate information and decision making. Informed by the literature, guided by co-exploration with decision makers, we concentrate on two key cross-cutting issues: Water and Energy, and secondarily their influence on food security. We work within and across disciplinary boundaries (transdisciplinarity) and develop all aspects of the research process in collaboration with user groups (co-exploration).The project functions through three interconnected work packages focused on three Tier 1 cities (Windhoek, Maputo and Lusaka), a secondary focus on three Tier 2 cities (Blantyre, Gaborone and Harare), and two self-funded partner cities (Cape Town and eThekwini). Work Package 1 (WP1) is an ongoing and sustained activity operating as a learning laboratory for pilot studies to link research from WP2 and 3 to a real world iterative dialogue and decision process. WP1 frames, informs, and steers the research questions of WP2 and 3, and so centres all research on needs for responsible development pathways of city-region systems. WP2 addresses the decision making space in cities; the political, economic, technical and social determinants of decision making, and seeks to understand the opportunities for better incorporation of climate information into local decision making contexts. WP3, the majority effort, focuses on advancing understanding of the physical climate processes that govern the regional system, both as observed and simulated. This knowledge grounds the development of robust and scale relevant climate information, and the related analysis and communication. This is steered explicitly by WP1s perspective of urban climate change risk, resilience, impacts, and decisions for adaptation and development. The project will frame a new paradigm for user-informed, knowledge-based decisions to develop pathways to resilience for the majority population. It will provide a step change in understanding the cross-scale climate processes that drive change and so enable enhanced uptake of climate information in near to medium-term decision making. The project legacy will include improved scientific capacity and collaboration, provide transferable knowledge to enhance decision making on the African continent, and in this make significant contribution to academic disciplines.
Annual Conference of the Australian Acoustical Society 2013, Acoustics 2013: Science, Technology and Amenity | Year: 2013
With Cloud computing and Cloud data storage being sold as the way of the future for storing and accessing our digital information, we are seeing an increase in data centre developments in metropolitan areas throughout the world. However, given their complex building services' and high power requirements, there is potential for significant noise emissions to impact the surrounding area. This paper explores the operational noise emission challenges associated with designing acoustically sound data centres and draws on recent project experience from the development of new data centres in Australia's major cities. Included in the discussion are various power and cooling options, unique noise emitting equipment, building layouts, types of operation and rigorous testing schedules, all of which can significantly affect the environmental noise impact assessment of sensitive receivers in the vicinity of the centre. Copyright © (2013) by the Australian Acoustical Society.