SMEC Australia

Sydney, Australia

SMEC Australia

Sydney, Australia
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Kelly R.B.,SMEC Australia | Kelly R.B.,University of Newcastle | Kelly R.B.,University of Wollongong | Pineda J.A.,University of Newcastle | And 3 more authors.
Geotechnique | Year: 2017

A soft soil field testing facility has been recently established near Ballina, New SouthWales, on the east coast of Australia, which is aimed at improving design and construction methods for transport infrastructure. Several sampling, laboratory and in situ testing campaigns have been performed to characterise the material properties of the soil. High-quality laboratory testing has been performed at one location through the soil profile and a range of geophysics, cone penetrometer, seismic dilatometer, shear vane and permeability tests have been carried out at other locations. The in situ tests have demonstrated that the stratigraphy and test data are reasonably uniform across the site. Seasonal groundwater variations cause the in situ stress state to vary with time. In situ test data have been compared with laboratory tests in order to estimate soil material properties at the locations of the in situ tests. The accuracy of published correlations was variable and site-specific correlations were found to provide a better outcome. The coefficient of consolidation and the water permeability obtained from small-scale laboratory tests shows good agreement with in situ estimations based on piezocone penetration test (CPTu) dissipation tests and BAT tests, respectively. The correlation between laboratory and in situ data is used to develop a robust geotechnical model for the Ballina site. © 2017, ICE Publishing. All rights reserved.

Deible J.,00 Penn Center Boulevard Inc. | Rizzo P.C.,00 Penn Center Boulevard Inc. | Herweynen R.,Hydro Tasmania | Stratford C.,SMEC Australia
International Water Power and Dam Construction | Year: 2010

Wyaralong dam site is located in south-east Queensland, Australia, near the township of Beaudesert. The project is part of the south-east Queensland water grid, providing water supply for this region of Australia. When completed, the dam will have the capacity to store approximately 103,000 ML of water. The Wyaralong Dam Project is being delivered as an Alliance, where the Client, Designer and Contractor work together in a contractual arrangement which shares the risks and the rewards associated with delivering the project. Wyaralong Dam is a 47m high, 490m long, roller compacted concrete (RCC) dam, with a centrally located ungated primary spillway and a secondary spillway on the left abutment. The initial geotechnical investigation was carried out in 2006/07 and in the first half of 2009. This investigation consisted of boreholes across the damsite and two dozer trenches were excavated, one on each abutment of the dam.

Elakanda S.,Ministry of Irrigation and Water Resources Management | Nanseer M.,SRI International | Milton D.,SRI International | Yamagata K.,DHI | Deen A.,SMEC Australia
Hydrology and Water Resources Symposium 2014, HWRS 2014 - Conference Proceedings | Year: 2014

Sri Lanka has a history of over two thousand years of dam construction and irrigation development with a complex network of canals and storages servicing the dry zone of the country. The Government of Sri Lanka (GoSL) has been progressing with a massive program of infrastructure development to enable these dry zone systems to provide reliable irrigation water supplies for cropping twice a year by large scale inter?basin transfers in addition to maximising hydropower generation, ensuring safe and adequate drinking water supplies and maintaining environmental values. SMEC was engaged to assist GoSL with planning and modelling of the existing and proposed future systems. The primary source of the water is the Mahaweli Ganga which is the island's largest river system. The overall water resource system planning model was constructed on the MIKE Basin platform using ArcGIS as the geographical framework. It included over thirty major reservoirs, covered over half the entire country and involved regulation of water of about 7,500 GL. Detailed system operational data, including irrigation water deliveries, reservoir water level, rainfall and river flow information was used to calibrate and verify the system model. Separately a substantial knowledgebase involving food production, detailed economic analysis, pricing, power generation, employment creation, re?settlement and social equity considerations was also developed. The water resources model was then coupled to the knowledge base through a decision support system to enable the rapid assessment of development options and their related impacts economically and socially in addition to overall costs. This paper describes the innovative approaches used in first developing the model and then calibrating and verifying it in a data poor region. The paper then progresses to the application of this sophisticated instrument to option development through the decision support system and multi criteria analysis.

Williams R.G.S.,Abriox Ltd | Woodland K.P.,SMEC Australia
Annual Conference of the Australasian Corrosion Association 2013: Corrosion and Prevention 2013 | Year: 2013

UK onshore gas, oil and petrochemical pipeline infrastructure transports gaseous and liquid hydrocarbons via a network of transmission and distribution pipelines at high and intermediate pressures. These pipelines are protected from corrosion by impressed current Cathodic Protection systems. In the past 5 years, UK utilities have installed monitoring systems to gather CP data remotely. Such projects have demonstrated an attractive return on investment compared with the manual methods of collecting CP data that had existed previously. However, they have also been able to demonstrate significant operational gains in terms of improved asset integrity management through early identification of potential corrosion issues as well as reducing risk to the workforce, contributing to environmental KPIs and achieving better regulatory compliance. Copyright © 2013 by the Australasian Corrosion Association.

Watterson E.,SMEC Australia | Messiter D.,SMEC Australia | Nose T.,SMEC Australia | Blacka M.,Sydney Water | Warren L.,Gladstone
Coasts and Ports 2013 | Year: 2013

This paper provides a summary of methodologies used to optimise the proposed Gladstone Tug Berth Marina and how, through the application of a risk management framework, SMEC assisted Gladstone Port Corporation's (GPC) decision-making process in understanding risks associated with a 'no breakwater option' and progressing the project. Investigations and design for maritime structures were undertaken for the proposed marina including pontoon structures (12 tug capacity), a service jetty and potential breakwater structure at Port Curtis, Gladstone, QLD. The site is exposed to locally generated wind waves and subject to tropical cyclones. Uncertainty had surrounded the extreme wave climate and the required levels of coastal protection, inhibiting project decision-making. In selecting the most appropriate protection option it was imperative that GPC understood the risks and associated uncertainties affecting the facility design and operation. This was complicated by limited metocean data representative of the site, which is located in an environment affected by significant spatial variations in wind and wave climate. Metocean design parameters were determined through a series of coastal and maritime engineering and planning applications including; synthesised cyclone modelling and analysis, hindcast wave modelling, field data collection to verify the numerical modelling outcomes, management options for alternate storm tug mooring, innovative steel pontoon design, and physical modelling of pontoons to optimise design of the facility. Discussion of investigation and design outcomes in a risk management workshop enabled GPC to identify the risks of each protection option. The 'no breakwater option' was selected resulting in significant project cost saving demonstrating how understanding and acceptance of risk through thorough engineering analysis can optimise project outcomes.

Qian Z.G.,Deakin University | Li A.J.,Deakin University | Merifield R.S.,SMEC Australia | Lyamin A.V.,University of Newcastle
International Journal of Geomechanics | Year: 2015

Stability charts for soil slopes, first produced in the first half of the twentieth century, continue to be used extensively as design tools, and draw the attention of many investigators. This paper uses finite-element upper and lower bound limit analysis to assess the short-term stability of slopes in which the slopematerial and subgrade foundation material have two distinctly different undrained strengths. The stability charts are proposed, and the exact theoretical solutions are bracketed to within 4.2% or better. In addition, results from the limit-equilibrium method (LEM) have been used for comparison. Differences of up to 20% were found between the numerical limit analysis and LEM solutions. It also shown that the LEM sometimes leads to errors, although it is widely used in practice for slope stability assessments. © 2014 American Society of Civil Engineers.

Comino P.,SMEC Australia | Baldwin H.,SMEC Australia | Gonzalez C.,SMEC Australia
The Art and Science of Water - 36th Hydrology and Water Resources Symposium, HWRS 2015 | Year: 2015

It has been identified that possible failure of the two detention basins located just upstream from the townships of Marburg and Rosewood, Ipswich, creates a Population at Risk (PAR) significant enough for both dams to be classed as referable under Queensland's Water Supply (Safety and Reliability) Act 2008. It is a requirement that all referable dams are operated and maintained in accordance with Queensland Dam Safety Guidelines that outline the procedures and requirements to manage the dams in a safe manner. Part of the documentation required for a referable dam is the development and regular updating of an Emergency Action Plan (EAP). Compliance with the Act and directives from Queensland's Department of Environment and Water (DEWS) is mandatory, and required updated EAPs to be developed for both detention basins. SMEC reviewed previously prepared EAPs for both basins, and updated them to meet all requirements needed to gain approval from DEWS. Failure Impact Assessments (FIAs) were conducted by SMEC for both basins, to inform the development of the EAPs and enable stakeholders to identify property and infrastructure at risk in the event of a failure. The proximity of the detention basins to both townships in both cases will only allow minimal time between dam failure occurring, and the flood front reaching the townships. This highlights the need to develop procedures that provide early warning and activation of the EAP. © 2015, Engineers Australia. All rights reserved.

Comino P.,SMEC Australia
The Art and Science of Water - 36th Hydrology and Water Resources Symposium, HWRS 2015 | Year: 2015

The undertaking of hydrologic and hydraulic investigations in developing nations involves unique challenges for the engineering profession. These challenges vary greatly depending on a range of aspects, including: project scope and objectives; project management practices; funding sources; human resources available; availability of raw data and/or previous studies; and variable site conditions. This presentation will describe the challenges for the Greater Mekong Subregion - East-West Economic Corridor (GMS EWEC) Project, Myanmar. The GMS EWEC comprised an upgrade of a 70km stretch of the existing highway between Kawkareik and Eindu, east of Yangon. A strategy was devised to fill data gaps in a rainfall record so as to allow the creation of a preliminary Intensity-Frequency-Duration (IFD) chart. Peak flow estimates were estimated, and modified to allow for varying floodplain storages in lower floodplains. Estimates of peak flows and flood levels were able to be verified against the multitude of observations of road overtopping along the existing roadway. A recommendation is made for further work to refine the IFD Table, particularly for small duration storm events. © 2015, Engineers Australia. All rights reserved.

Kidd P.,SMEC Australia
Australian Geomechanics Journal | Year: 2011

The City of Gold Coast has a population of over 520,000 people and an area of 1400 square kilometres. The city has variable geology and geomorphology which includes significant amounts of sloping terrain. The project involved a review, revaluation and update of the city wide unstable soils and slope instability susceptibility zoning system and the detailed assessment of the existing planning scheme relating to the development on sloping sites of a medium or higher susceptibility of slope instability. The zoning was based on geology, landforms, climate and history of the project area using a GIS platform. The project incorporated current best practice guidelines for the assessment of slope instability risk and also included updating city wide susceptibility mapping showing numerous landslips that have occurred or been mapped since the original zoning was undertaken in 1999 by SMEC.

Adikari G.S.N.,SMEC Australia | Parkin A.K.,SMEC Australia
Australian Geomechanics Journal | Year: 2011

Following the Thredbo disaster of 1997, SMEC was engaged by the Victorian DNRE (now DSE) to conduct stability reviews of all their alpine resorts, with results to be incorporated into a series of risk maps for guidance in resort development, this work having taken place early in 1999. A classification system was developed from the methodology in AS 4360, and applied in a program of inspections on 642 sites across six alpine resorts. From these inspections, a relative frequency was assigned to each site, and then developed into an individual hazard rating for particular failure modes by incorporating an assessed background risk. The paper includes a brief review of the Thredbo slide, and a review of some slide events in the alpine region for an indication of background risk, and to supplement limited evidence within the resorts.

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