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Understanding housing preferences is critical for successful compact city development. However, there is limited research on understanding preference heterogeneity in dwelling type choices. Using the Household Income and Labour Dynamics in Australia survey, this paper identifies the key housing and built environment characteristics associated with changes in dwelling type choice from detached houses to high-density. A latent class choice model captures the heterogeneity of dwelling type preferences within a traditionally low-density city, Brisbane, Australia. Findings reveal six household classes with distinct dwelling preferences: Class 1 (senior households without children with other family members) and Class 2 (couple families with children) in inner-city areas, Class 3 (high-income young households) and Class 4 (low-income households without children) in middle-city areas, Class 5 (low-income families with children) and Class 6 (middle-income young families without children) in outer-city areas. Residential environments with better access to educational facilities encourage Classes 3 and 6 to change to high-density living. Greater land use diversity encourages Classes 2, 3, and 6 to move towards high-density living. The findings can be used to design and improve high-density housing for targeted population groups across inner-, middle- and outer-city areas. [ABSTRACT FROM AUTHOR]

This paper presents an approach to earthworks design and construction for residential, industrial and commercial developments in the eastern states of Australia, mostly for Sydney, Brisbane and Melbourne. This approach has been implemented successfully over a range of projects and development types, for various ground conditions, over a period of 15 years. The approach has benefited from the Authors' experience with claims and disputes arising from earthworks. It is acknowledged that there are many possible approaches to earthworks projects, and the intention of the paper is to raise awareness of the importance of a unified approach to earthworks design, construction, testing and documentation, auditing and certification consistent with AS3798-2007. The paper argues that whilst the 'earthworks specification' is a major component of the earthworks approach, it is only part of the approach. Far too often a few notes on a civil drawing represent the entire thinking regarding the earthworks component of a project/development. Often drawings and specifications are prepared with little evidence that the works have been designed for particular end use. Included in this paper is an example earthworks specification, and discussion of various clauses in these, in light of usual practice and the Authors' experience with earthworks. [ABSTRACT FROM AUTHOR]