A greener house : the sustainable property investor's guide to buying, building and renovating

Sustainability is now an integral part of society and the built environment. Unfortunately many home owners and home-buyers are unaware of the relationship between sustainability and value, especially with regard to the potential added value to their home. Payback periods can be different depending on factors such as the initial capital outlay and the levels of depreciation and obsolescence, as well as savings made (if any) to the running costs of the home

Sustainable retrofit potential in lower quality office stock in the central business district

Given the relationship between energy consumption, greenhouse gas emissions and climate change, the built environment has significant potential to lessen overall emissions. With around half of all greenhouse gas emissions attributed to the built environment; it has a significant role to play in mitigating global warming. With large percentages of office stock structurally vacant in some city centres and only 1 or 2% of new buildings added to the total stock each year; the scope for reductions lay with adaptation of existing buildings. The stock with the highest levels of vacancy and obsolescence offers the highest potential of all.

Many cities are now aiming to become carbon neutral. Successful retrofit demands that social, technological, environmental, economic and legislative criteria are addressed. Buildings have to meet user and community needs. City centres comprise a range of different type of office stock with regards to age, size, location, height, tenure and quality. All buildings present challenges and opportunities with regards to retrofit and sustainability and integrating retrofit measures that reduce energy, water and resource consumption.

Using a selection of low grade office buildings to develop retrofit profiles, this paper addresses the questions; (a) what is the nature of retrofits in relation to low quality office building stock in the Central Business District (CBD) and, (b) what is the extent and scope for sustainable retrofits to low quality office buildings. Using Melbourne CBD retrofit events of low quality office buildings were analysed between 1998 and 2008 to identify the scope and extent for integrating sustainability into retrofits projects.

A multi-criteria decision approach to decommissioning of offshore oil and gas infrastructure

Thousands of the world's offshore oil and gas structures are approaching obsolescence and will require decommissioning within the next decade. Many nations have blanket regulations requiring obsolete structures to be removed, yet this option is unlikely to yield optimal environmental, societal and economic outcomes in all situations. We propose that nations adopt a flexible approach that allows decommissioning options to be selected from the full range of alternatives (including 'rigs-to-reefs' options) on a case-by-case basis. We outline a method of multi-criteria decision analysis (Multi-criteria Approval, MA) for evaluating and comparing alternative decommissioning options across key selection criteria, including environmental, financial, socioeconomic, and health and safety considerations. The MA approach structures the decision problem, forces explicit consideration of trade-offs and directly involves stakeholder groups in the decision process. We identify major decommissioning options and provide a generic list of selection criteria for inclusion in the MA decision process. To deal with knowledge gaps concerning environmental impacts of decommissioning, we suggest that expert opinion feed into the MA approach until sufficient data become available. We conducted a limited trial of the MA decision approach to demonstrate its application to a complex and controversial decommissioning scenario; Platform Grace in southern California. The approach indicated, for this example, that the option 'leave in place intact' would likely provide best environmental outcomes in the event of future decommissioning. In summary, the MA approach will allow the environmental, social, and economic impacts of decommissioning decisions to be assessed simultaneously in a transparent manner. © 2013 Elsevier Ltd.

Queering archives: intimate tracings

In the longer introduction of Radical History Review’s two thematic issues “Queering Archives,” we frame the archive as an evasive and dynamic space animated by the tensions of knowledge production, absence, and presence. As Jeffrey Weeks argued in RHR in 1979, “The evolution of sexual meanings and identities that we have traced over the past hundred years or so are by no means complete.”1 Fragments of information float unfixed — historically unraveled — and we form archives when we pull the fragments into the orbit of efforts to know. Yet the business of knowing is unsteady, as scholars of sexuality and gender have amply demonstrated. Between the fraught and necessary practices of historicization, anachronism, interpretation, bias, and partial readings that propel historical scholarship, archival fragments fall in and out of the frame of an easily perceptible knowledge. Queer historical knowledge thus is evasive — like a coin dropped in the ocean and for which one grasps, reaching it only for it to slip away again, rolling deeper into the beyond. To say that the knowledge work of animating queer historical fragments is marked by such slipperiness is to underline how the archive negotiates the decomposition and recomposition of knowledge’s materials. We pull and push at the fading paper, the fraying fabric, the photographs bleaching into their backgrounds, and manipulate technologies on their way to obsolescence, all as part of some suturing effort of one kind or another.