Risk Assessment of Wastewater Networks Infrastructure

The wastewater collection network in metropolitan Adelaide consists of a large number of assets distributed over a wide geographic area. This poses significant challenges in both conducting and prioritising asset management activities for these assets, including maintenance, rehabilitation, condition assessment and replacement. United Water has met these challenges in a cost-effective manner by developing prioritisation models utilising the functionality of GIS and InfoNet. The wastewater collection system in Adelaide includes over 80,000 wastewater access chambers, termed ‘manholes’, and 900 sewer vent stacks, commonly known as ‘educt vents’.

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Mobile Geographical Information Systems Implementation for Water Infrastructure

Today mobile computing technology is an integrated part of our business processes as it enables non-location specific task completion. Geographic Information Systems (GIS) are a vital source of information for field-based workers; however this information is normally only available via a PC and corporate network. The combination of GIS and mobile computing technology enables field-based staff to make informed decisions in the field without the need to ‘return to base’ or attempt to transmit this information over the phone.

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Asset Renewal Decision Modelling For Public Infrastructure Assets

This paper develops a new approach to stochastic modelling of asset renewal timing decisions using net present value derived from attributable revenue and total cost of ownership. This renewal decision model proposed has the advantage of aligning the efforts of asset custodians to the financial needs of the infrastructure management business. Secondly, we identify the option to perform Front End Engineering (FEE) as part of the asset renewal decision process and use the Black Scholes [1] call option formula to calculate the value of an option to perform FEE. The ratio of option value to option cost is suggested as a means of prioritising front end engineering for renewal projects. Click here to read more

Optimising Floor Space During Retrofitting of High-rise Office Buildings

A need for an efficient decision support tool for planning of office building refurbishment is emerging due to the significant increase in the number of ageing buildings in the world. In order to meet this need, all the aspects of building refurbishment projects such as waste minimisation and management, structural strengthening and floor space optimisation, estimation of residual life and construction management issues need to be integrated.

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