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\"A stubborn young girl named Fiona stumbles upon an abandoned house full of stray cats, just as it is threatened by a demolition team, a leadership crisis, and two potentially malicious parakeets. Can Fiona save the house and all its inhabitants? A new middle-grade novel by critically acclaimed author Tanya Lloyd Kyi. When Fiona wanders into an abandoned mansion down by the harbor, she discovers the house is full of stray cats (and two chaotic parakeets). Fiona feels a great deal of sympathy for the animals; she understands what it's like to need a safe home. Ever since her parents died, she's been struggling to adjust to the tiny apartment where she and her Aunt Tanis now live. And Aunt Tanis has little time to spare for Fiona, between her job at The Municipal Hall and her horrible, hair-gelled boyfriend. When the mansion is threatened by a demolition team, Fiona is determined to save “The City” and its residents. But the cats have their own priorities. Cot (short for Cottonball Fluffikins Magnificent III, a name he refuses to acknowledge) has lived in the mansion for two years and is the self-proclaimed king. He's convinced the demolition effort has been organized by the recently arrived parakeets. Those birds have got to go! Cot's feline rival, Piper, is sure she can intimidate the demolition team and force them to leave, if Fiona will simply stay out of her way. And the parakeets . . . well, the parakeets just want to go home. As the demolition team begins tearing down the house next door, Fiona looks for any help she can find - at the library, the butcher shop, and even at The Municipal Hall. Can the efforts of one small girl and an assortment of animals stop a luxury condo development? Can they create something better in its place? It's going to take some quick thinking on the part of Fiona, not to mention the cooperation of all the cats, to give The City a future.\"-- Provided by publisher.

A hazai közúti h idak robbantásáról csak nagyon kevés publikációt találhatunk. A robbantással való rombolások végigkísérik a magyar hídtörténelmet. A leghíresebb magyar hidat, a Lánchidat már építés közben is kétszer fel akarták robbantani. Óriási károkat okozott a magyar hídállományban a második világháború is, amikor 1400 közúti hidat romboltak le. A hídrobbantások története részletes kutatásokat kíván, ehhez nyújt összefoglalót ez a tanulmány.

Az építmények és szerkezeti elemek robbantásánál nem releváns, hogy milyen robbanóanyagot vagy robbanás kiváltására alkalmas szerkezetet használunk, ha a cél a kijelölt objektum bontása, tönkretétele vagy szélsőséges esetben rombolása. Szinte mindenki tökéletesen el tudja különíteni az ipari robbantásos építménybontás, a katonai rombolás, illetve a bűnös szándékú sza botázsakciók eseménysorát. Abba azonban kevesen gondolnak bele, hogyha különböző szempontrendszerek szerint vizsgáljuk ezeket a tevékenységeket, akkor hasonlóságokat fedezhetünk fel. A hasonlóságokat összevetve pedig márkirajzolódik az a „szürke zóna \", amely alapján a jogszabályalkotók olyan előírások betartására kötelezik a robbantási szakterületek munkáltatóit, hogy a különböző kockázatotjelentő anyagok nyomon követhetőségét biztosítsák. Célul tűztükki, hogy megvizsgáljuk az ipari, katonai és terrorjellegű robbantásokat egy olyan szegmensben, ahol mindhárom tématerület érintett, mégis a legrelevánsabb feladatokat a polgári robbantási tevékenység képviseli.

On July 4, Miami-Dade officials said that the partially collapsed Miami-area condo building would be demolished between 10 p.m. and 3 a.m. that night.

Government authorities can play a key role in promoting CE through public procurement, which can help scale resource-efficient strategies in the construction sector. However, they often lack knowledge of circular construction practices, especially about the context potential for urban mining and associated practicable metabolic processes. Therefore, an approach combining pre-demolition and reuse audit models is proposed to evaluate public-owned built assets at the end of their life cycle and suggest CE-oriented compensation measures to be implemented in subsequent construction projects. The paper also presents the results of applying the method to a case study in Lugano: the Ex-Spohr complex. The study identified 56 reusable elements and estimated the outgoing material flows from a hypothetical selective demolition, suggesting offsetting measures achievable in the following municipality projects.

Building material stock studies can help to implement circular economy measures by identifying future availability of secondary material and by comparing the environmental impact of different circularity measures. However, the accuracy of these models is often uncertain due to limitations in data quality, granularity, and assumptions made during model development. Validation of building material stock models with additional empirical data is rare. Here, we address this gap by comparing the material amounts on the single building level predicted by an archetype- and component-based building material stock model from a previous study for a number of individual demolished buildings with the amounts recorded in demolition data for the same buildings submitted to city authorities. Our results show a good agreement between the model and demolition data for the total amount and for mineral materials, but not for metals, insulation materials and wood. The findings highlight the importance of further work validating existing building material stock models and warrant caution when using predictions of material amounts for specific materials on individual building level.

The civil engineering sector accounts for a significant percentage of global material and energy consumption and is a major contributor of waste material. The ability to recycle and reuse concrete and demolition waste is critical to reducing environmental impacts in meeting national, regional and global environmental targets. Handbook of recycled concrete and demolition waste summarises key recent research in achieving these goals.Part one considers techniques for managing construction and demolition waste, including waste management plans, ways of estimating levels of waste, the types and optimal location of waste recycling plants and the economics of managing construction and demolition waste. Part two reviews key steps in handling construction and demolition waste. It begins with a comparison between conventional demolition and construction techniques before going on to discuss the preparation, refinement and quality control of concrete aggregates produced from waste. It concludes by assessing the mechanical properties, strength and durability of concrete made using recycled aggregates. Part three includes examples of the use of recycled aggregates in applications such as roads, pavements, high-performance concrete and alkali-activated or geopolymer cements. Finally, the book discusses environmental and safety issues such as the removal of gypsum, asbestos and alkali-silica reaction (ASR) concrete, as well as life-cycle analysis of concrete with recycled aggregates.Handbook of recycled concrete and demolition waste is a standard reference for all those involved in the civil engineering sector, as well as academic researchers in the field. Summarises key recent research in recycling and reusing concrete and demolition waste to reduce environmental impacts and meet national, regional and global environmental targetsConsiders techniques for managing construction and demolition waste, including waste management plans, ways of estimating levels of waste, the types and optimal location of waste recycling plantsReviews key steps in handling construction and demolition waste

Conventionally, in a linear economy, C&D (Construction and Demolition) waste was considered as zero value materials, and, as a result of that, most C&D waste materials ended up in landfills. In recent years, with the increase in the awareness around sustainability and resource management, various countries have started to explore new models to minimize the use of limited resources which are currently overused, mismanaged, or quickly depleting. In this regard, the implementation of CE (Circular Economy) has emerged as a potential model to minimize the negative impact of C&D wastes on the environment. However, there are some challenges hindering a full transition to CE in the construction and demolition sectors. Therefore, this review paper aims to critically scrutinize different aspects of C&D waste and how CE can be integrated into construction projects. Reviewing of the literature revealed that the barriers in the implementation of CE in C&D waste sectors fall in five main domains, namely legal, technical, social, behavioral, and economic aspects. In this context, it was found that policy and governance, permits and specifications, technological limitation, quality and performance, knowledge and information, and, finally, the costs associated with the implementation of CE model at the early stage are the main barriers. In addition to these, from the contractors’ perspective, C&D waste dismantling, segregation, and on-site sorting, transportation, and local recovery processes are the main challenges at the start point for small-scale companies. To address the abovementioned challenges, and also to minimize the ambiguity of resulting outcomes by implementing CE in C&D waste sectors, there is an urgent need to introduce a global framework and a practicable pathway to allow companies to implement such models, regardless of their scale and location. Additionally, in this paper, recommendations on the direction for areas of future studies for a reduction in the environmental impacts have been provided. To structure an effective model approach, the future direction should be more focused on dismantling practices, hazardous material handling, quality control on waste acceptance, and material recovery processes, as well as a incentivization mechanism to promote ecological, economic, and social benefits of the CE for C&D sectors.