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Showing 1 to 14 of 14 for “"0905 Civil Engineering"”.
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Risk apportioning in engineering and building contracts in Australia
… practice in respect of risk apportioning in engineering and building construction contracts in Australia. The thesis details a study conducted on 50 industry contracts that, through an examination of risk provisions, determined that a high level of risk shifting was being practised in the …
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On the importance of input variables and climate variability to the yield of urban water supply systems
Yield plays a central role in the processes, practices, management and operation of urban water supply systems. In Australia, yield is commonly defined as the maximum average annual volume of water that can be supplied from the water supply system subject to climate variability, operating rules, …
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Damage detection in structures using frequency response function (FRF) data and finite element modelling
This thesis presents a method to detect structural damage using frequency response function (FRF) data obtained from non-destructive vibration tests. The method is used to study cases of early structural damage in which there is no appreciable change in mass and damping. The resulting change in …
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Optimum design of structures with stability constraints using the evolutionary optimisation method
In the past most of the works on structural optimisation have been based on either mathematical programming or optimality criteria methods and have mainly concentrated on static responses of structures. These optimisation methods are mathematically complex and have limited applications. A novel …
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Recycling waste concrete into road pavement aggregate
The use of recycled concrete aggregate (RCA) as a road pavement material in Australia is relatively recent and confined mainly to Victoria and New South Wales. Samples of RCA were taken at six, monthly intervals from a local producer of RCA. A range of tests was carried out to provide initial …
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Axial load capacity of circular steel tube columns filled with high strength concrete
This study examines the axial load capacity of circular Concrete Filled Steel Tube columns using High Strength Concrete (CFST-HSC). Emphasis is drawn to the enhanced axial capacity of short columns attributed to the lateral confinement of the concrete infill provided by the steel encasement. The …
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Puncture resistance of geotextiles and evaluation of the g-rating classification system
The puncture resistance of geotextiles in Australia is measured in terms of the G-Rating, which is the product of CBR and drop cone puncture test results. CBR and drop cone puncture tests were conducted on 24 geotextiles to provide up-to- date results, and to evaluate the G-Rating. CBR puncture …
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Laboratory specimen preparation for cold recycled asphalt
In Australia the use of Reclaimed Asphalt Pavement material (RAP) is increasing. Cold recycling has advantages over other recycling processes and conventional paving methods, making it a viable, cost-effective technique which preserves natural resources and reduces energy costs. The service life of …
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Modelling of disturbed flow regimes in aspirated pipe systems
Aspirated systems such as those used for smoke detection are characterised by the use of long (e.g. lOOw), small- ore (e.g. 2lmm) pipes with sampling holes (e.g. 2mm) drilled at regular intervals (e.g. 4m). A low-power aspirator (e.g. 2W) draws a continuous sample of air from each hole throughout …
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Evolutionary methods for topology optimisation of continuum structures: static and dynamic problems
This thesis studies the topology optimisation of continuum structures. Two methods have been investigated, namely. Evolutionary Structural Optimisation (ESO) and Bidirectional ESO (BESO). The basic concept of ESO is that by systematically removing inefficient materials from the structure, the …
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Prediction of water droplet behaviour during fire extinguishment
… such as Halon. Commonly used as a fire engineering tool for predicting fire growth and hot gas movement in a compartment, are zone models. Even though the performance of fire sprinklers or mist sprays is predicted by some of these models, the analysis is very limited. This analysis is …
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Parameter estimation of urban drainage models
Urbanisation is one of the key factors that contributes to urban flooding, which has caused major destruction to the environment and the human race. In particular, the increase in population and building density influence the change in hydrological characteristics in urban areas. Conversion of …
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Performance-based optimization method for structural topology and shape design
… and its practical applications to stuctural engineering.
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Irrigation scheduling: a soft adaptor to weather uncertainties and irrigation efficiency improvement initiatives
Expanding dairy farming around the world including the Canterbury region of New Zealand is causing increasing demand for irrigation, placing more pressure on already stressed water resources. The challenge for New Zealand dairy farming is to maintain an appropriate equilibrium between pasture …