Bibliographies thématiques / Demolition phase of buildings

Littérature scientifique sur le sujet « Demolition phase of buildings »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 11 mars 2023

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Articles de revues sur le sujet "Demolition phase of buildings"

Myneni, Kranti kumar, et Rajan D. « IMPACT OF CIRCULAR CONSTRUCTION ON DEMOLITION WASTE MANAGEMENT IN THE INDIAN CONSTRUCTION INDUSTRY ». International Journal of Engineering Technologies and Management Research 8, n^o 1 (1 février 2021) : 12–24. http://dx.doi.org/10.29121/ijetmr.v8.i1.2021.846.

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In recent times due to the Indian economic growth, there is a surge in construction activities. This surge has led to an excess amount of demolition waste that is produced. According to the Building Material Promotion Council, India generates an estimated 150 million tons of C and D waste every year. Some existing initiatives and the significant stakeholders' involvement have created the demolition waste management systems essential in the building’s demolition phase. The research in the C and D and Awareness program for C and D waste that initiated has led to the implementation of some waste management systems in the building's demolition phase. In India, the amount of demolition waste produced is higher than the construction waste produced while constructing buildings. So, it is essential for the demolition waste mitigation plan in the building's demolition phase. The study aims to know circular construction and current demolition waste management performance in the Indian construction industry. Through literature review, demolition waste management systems that are carried out all around the world are collected. The current practices carried out by diﬀerent stakeholders practicing in India are known through a questionnaire survey. Data interpretation is made using the data collected in the literature review and the questionnaire survey. This research identified the signiﬁcant beneﬁts, barriers, and motivation factors to implement the waste management system, and proposing any necessary changes. Designer innovation and BIM deconstruction is considered as one of the barrier-breaking innovation in adopting the circular construction.

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Cha, Gi Wook, Won Hwa Hong et Jin Ho Kim. « A Study on CO₂ Emissions in End-of-Life Phase of Residential Buildings in Korea : Demolition, Transportation and Disposal of Building Materials ». Key Engineering Materials 730 (février 2017) : 457–62. http://dx.doi.org/10.4028/www.scientific.net/kem.730.457.

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Architecture and building industry have been made diversified efforts to create a construction environment that promotes resource recycling. Many studies have been done to better understand and reduce energy consumption and CO2 emissions throughout a building’s lifecycle. However, to promote sustainable development and a construction environment that facilitates resource recycling, more understanding and research is needed on energy consumption and CO2 emissions during the stage of dismantling a building. Noting that, this research investigates CO2 emissions in a building’s End-Of-Life (EOL) phase that includes dismantling of a building, transport and disposal of the waste generated in the course of dismantling residential buildings in Korea. According to the results of this study, CO2 emissions in a building’s EOL phase was 3,561kg CO2/100m2 for apartments, 3,184 kgCO2/100m2 for brick houses and 1,137 kg CO2/100m2 for wooden houses. The results showed that transport and disposal process of demolition waste accounts for 90% of all CO2 emissions in a building’s EOL phase. From this finding, it is necessary to have a proper, effective strategy for transport and disposal of demolition waste from dismantled buildings’ in order to reduce CO2 emissions during a building’s EOL phase.

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Sobotka, A., A. Radziejowska et J. Czaja. « Tasks and Problems in the Buildings Demolition Works : A Case Study ». Archives of Civil Engineering 61, n^o 4 (1 décembre 2015) : 3–18. http://dx.doi.org/10.1515/ace-2015-0032.

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In Poland, it often happens that construction objects are subject to demolition work for different reasons. Demolition, according the Construction Law, is defined as a type of construction works and, as such, represents a particular type of construction project. As in other construction projects, a very important phase, in addition to execution of the works, is to prepare, design and plan demolition works. Some demolition activities are covered by appropriate regulations and can be described as typical. On the other hand the technical side of demolition works depends on many factors such as: the type of building, its age, technical condition, type of construction, etc. This article covers the analysis of the stages and tasks in the preparatory phase of the building demolition. This work will also present a description of the tasks carried out during the demolition works based on the example of a historic tenement house located in Krakow. This analysis aims to identify implementation problems and sources of risk that may occur during this type of construction work.

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Paneru, Suman, Forough Foroutan Jahromi, Mohsen Hatami, Wilfred Roudebush et Idris Jeelani. « Integration of Emergy Analysis with Building Information Modeling ». Sustainability 13, n^o 14 (17 juillet 2021) : 7990. http://dx.doi.org/10.3390/su13147990.

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Traditional energy analysis in Building Information Modeling (BIM) only accounts for the energy requirements of building operations during a portion of the occupancy phase of the building’s life cycle and as such is unable to quantify the true impact of buildings on the environment. Specifically, the typical energy analysis in BIM does not account for the energy associated with resource formation, recycling, and demolition. Therefore, a comprehensive method is required to analyze the true environmental impact of buildings. Emergy analysis can offer a holistic approach to account for the environmental cost of activities involved in building construction and operation in all its life cycle phases from resource formation to demolition. As such, the integration of emergy analysis with BIM can result in the development of a holistic sustainability performance tool. Therefore, this study aimed at developing a comprehensive framework for the integration of emergy analysis with existing Building Information Modeling tools. The proposed framework was validated using a case study involving a test building element of 8’ × 8’ composite wall. The case study demonstrated the successful integration of emergy analysis with Revit®2021 using the inbuilt features of Revit and external tools such as MS Excel. The framework developed in this study will help in accurately determining the environmental cost of the buildings, which will help in selecting environment-friendly building materials and systems. In addition, the integration of emergy into BIM will allow a comparison of various built environment alternatives enabling designers to make sustainable decisions during the design phase.

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Trinchese, Giuseppe, Alessia Verniero et Gregorio García López de la Osa. « New recycling technologies of demolished materials for sustainable finishes : the project of concrete reuse on site in Tres Cantos, Madrid ». VITRUVIO - International Journal of Architectural Technology and Sustainability 7, n^o 2 (30 décembre 2022) : 100–111. http://dx.doi.org/10.4995/vitruvioijats.2022.18844.

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The work presented aims to analyse the feasibility of reusing concrete, once demolished from a building in Tres Cantos in Madrid, to manufacture finishing materials for buildings, as well as to design a procedure. The first phase consists of a bibliographic search on the reuse of materials, analysing the techniques adopted so far and the lines of work. The second phase related to the acquisition of data related to the production and recycling of Construction and Demolition Waste (CDW) at a European level. The third phase consists of the study of recycled aggregates resulting from demolitions or landslides, their treatment process. The fourth and final phase consists of the development of a laboratory test plan to evaluate varied materials for finishing exterior cement pavements with concrete from the demolition of the case study building. There were many conclusions and results of the project. The granulometry of the fine fraction of demolished concrete is suitable to produce non-structural products, such as building finishes and in particular non-driveway outdoor flooring. In terms of flexural and compressive strength, the mechanical behaviour of recycled mixes is lower than that of reference mixes. The recycled mixes show slightly higher capillary absorption capacities than the reference mixes, and the value is higher the greater the percentage of recycled aggregates used (a critical issue which can be resolved by pre-saturating the recycled material).

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Cha, Gi Wook, Won Hwa Hong et Sung Woo Shin. « A Study on Energy Consumption and CO₂ Emissions in End-Life Cycle of Residential Buildings ». Advanced Materials Research 689 (mai 2013) : 226–29. http://dx.doi.org/10.4028/www.scientific.net/amr.689.226.

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In recent years, demolition work in Korea has been rapidly increasing, and accordingly, its environmental impact has become significant, thus requiring quantitative analysis on energy consumption and CO2 emissions generated during demolition work. This study aims to examine energy consumption and CO2 emissions in the end-life cycle of buildings. In this study, inventory analysis was conducted and basic units of energy consumption and CO2 emissions were calculated in accordance with Intergovernmental Panel on Climate Change (IPCC) guidelines published in 1996. Major findings show that 64% of energy consumption and CO2 emissions in buildings’ end-life cycle is generated in the demolition phase, and 36% in the transportation phase.

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Ferreira-Sánchez, Antonio, et Madelyn Marrero. « Waste Management of Emergency Construction Work. Case Study : 40 Dwellings in Seville (Spain) ». Open Construction and Building Technology Journal 11, n^o 1 (14 février 2017) : 110–23. http://dx.doi.org/10.2174/1874836801711010110.

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Eco-efficient rehabilitation of buildings and neighbourhoods should include strategies to reduce the potential environmental impact of buildings under consideration for demolishment. In this case, good construction and demolition (C&D) waste management can represent a doubly eco-efficient approach: advantage is taken of much of the building and the volume of waste is reduced during construction and demolition work. Construction and demolition waste management in emergency situations is a subject yet to be studied in the construction sector. This kind of work, although not very common, involves major building damages and the need for punctual, partial or total demolitions. The amount of C&D waste can be a major problem to deal with, and its management during the critical first phases can determinate the progress of the rehabilitation. Conditioned by a greater number of factors than normal construction works, the lack of time for the identification, quantification, and evaluation of C&D waste renders this type of extremely useful study. In this work, from the case study of the emergency repair of a residential building of 40 dwellings in Seville (Spain) seriously affected by a soil displacement, Generated C&D waste are identified and the waste reduction techniques used are shown. These techniques contributed to achieve the planned objectives and to control in advance the cost. Finally, the most important data, C&D waste quantification and the managing cost are presented in order to serve as reference for similar circumstances in the future because there areno clear references to be used.

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Soulakellis, Nikolaos, Christos Vasilakos, Stamatis Chatzistamatis, Dimitris Kavroudakis, Georgios Tataris, Ermioni-Eirini Papadopoulou, Apostolos Papakonstantinou, Olga Roussou et Themistoklis Kontos. « Post-Earthquake Recovery Phase Monitoring and Mapping Based on UAS Data ». ISPRS International Journal of Geo-Information 9, n^o 7 (17 juillet 2020) : 447. http://dx.doi.org/10.3390/ijgi9070447.

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Geoinformatics plays an essential role during the recovery phase of a post-earthquake situation. The aim of this paper is to present the methodology followed and the results obtained by the utilization of Unmanned Aircraft Systems (UASs) 4K-video footage processing and the automation of geo-information methods targeted at both monitoring the demolition process and mapping the demolished buildings. The field campaigns took place on the traditional settlement of Vrisa (Lesvos, Greece), which was heavily damaged by a strong earthquake (Mw=6.3) on June 12th, 2017. For this purpose, a flight campaign took place on 3rd February 2019 for collecting aerial 4K video footage using an Unmanned Aircraft. The Structure from Motion (SfM) method was applied on frames which derived from the 4K video footage, for producing accurate and very detailed 3D point clouds, as well as the Digital Surface Model (DSM) of the building stock of the Vrisa traditional settlement, twenty months after the earthquake. This dataset has been compared with the corresponding one which derived from 25th July 2017, a few days after the earthquake. Two algorithms have been developed for detecting the demolished buildings of the affected area, based on the DSMs and 3D point clouds, correspondingly. The results obtained have been tested through field studies and demonstrate that this methodology is feasible and effective in building demolition detection, giving very accurate results (97%) and, in parallel, is easily applicable and suit well for rapid demolition mapping during the recovery phase of a post-earthquake scenario. The significant advantage of the proposed methodology is its ability to provide reliable results in a very low cost and time-efficient way and to serve all stakeholders and national and local organizations that are responsible for post-earthquake management.

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Amaral, Rosaria E. C., Joel Brito, Matt Buckman, Elicia Drake, Esther Ilatova, Paige Rice, Carlos Sabbagh, Sergei Voronkin et Yewande S. Abraham. « Waste Management and Operational Energy for Sustainable Buildings : A Review ». Sustainability 12, n^o 13 (1 juillet 2020) : 5337. http://dx.doi.org/10.3390/su12135337.

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Construction and demolition waste account for a significant part of the solid waste taking up landfills on a global scale. A considerable portion of the waste generated by the construction industry has substantial residual value, and therefore waste management and sustainability principles and techniques should be applied. Buildings consume a lot of energy during the operations phase, but decisions made during design and construction impact building operations. This study reviews sustainable building practices to explore strategies that ensure minimal effects on economy, society, and the environment through efficient resource and waste management at different phases of a building life cycle. These practices include pollution reduction, reuse and recycling, energy consumption, embodied carbon, and water resource management.

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Scattolini, Elena. « Progetto di rigenerazione architettonica dell'edificio R5 a Tor Bella Monaca ». TERRITORIO, n^o 63 (décembre 2012) : 119–22. http://dx.doi.org/10.3280/tr2012-063024.

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A degree thesis written in conjunction with Diap research on the Tor Bella Monaca neighbourhood case study, which proposes intervention on an existing building, the R5 block. This is one of the buildings for which demolition is proposed according to the neighbourhood plan drawn up by the architect Krier and backed by Alemanno, the Mayor of Rome. The intention on the contrary is to investigate an alternative to demolition, which involves the reuse of existing structures, following an approach of reuse, regeneration of the built and agricultural land savings. An initial phase of identifying general design strategies was followed by activity to reorganise all parts of the building with particular attention paid to the ground floor, the design of open spaces, the insertion of new functions and the redesign of the accommodation.

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Thèses sur le sujet "Demolition phase of buildings"

Huang, Haibin. « Study of reinforced concrete building demolition methods and code requirements ». Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5167.

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Thesis (M.S.)--West Virginia University, 2007.
Title from document title page. Document formatted into pages; contains vii, 64 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 58-59).

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Fletcher, Scot Lawrence. « Developing disassembly strategies for buildings to reduce the lifetime environmental impacts by applying a systems approach ». Thesis, University of Sheffield, 2001. http://etheses.whiterose.ac.uk/10248/.

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The negative environmental impacts of buildings are now recognised as being of great concern. Increasingly, these concerns are being addressed in both the construction and the operational phase of a building's lifecycle. The specification of renewable or low impact materials and the criteria for designing for energy efficiency are now commonplace, but what about the final stage of a building's life-the demolition phase? The construction industry produces 24 kg of waste per person per week in the UK, and the majority of this is caused by decisions taken at the design stage. Conversely most of the current discussion in this area has been focused on dealing with the waste once it has arisen. If we are going to do more than 'end of pipe', remedial clean up of building waste we need to rethink how we design, build, use and demolish our built environment. In effect this means taking the filters out of the pipes and placing then instead in the designers heads. In addressing this situation, the aim of this thesis is to define guideline strategies that will reduce the negative environmental impacts of buildings by designing for the whole lifecycle. The research is presented in four parts. In the first part, the literature is reviewed and developed to define buildings within a cyclical systems context. This entails drawing upon relevant debates within the fields of systems thinking, architecture, bio-mimicry, industrial ecology, and industrial product design. In the second part, an investigation carried out with demolition experts is presented. In this study knowledge and opinions were sought via a number of semi-structured interviews with demolition experts. The conclusions of the case study identify strategies, which if implemented at the design stage could reduce the lifetime impacts and increase the reuse and recycling potential of buildings, their elements and material components. Following the detailed focus on end of life, the research is now expanded to consider the changes that occur throughout a building's lifetime. The aim of this is to determine where the greatest use of resources and major impacts occur throughout the building life cycle. Therefore Part III presents an investigation of the lifetime environmental impacts of office buildings. The building is fragmented into its time dependent layers (foundations, frame, claddings, services and internal fit out) and the impacts of these layers over the building lifetime are investigated. The study also examines the relative impacts of different frames and floors, which allow varying degrees of disassembly. Finally, to complete the lifecycle investigation, the embodied impacts are compared with the operational impacts over a sixty-year lifecycle. Part IV presents the conclusions of this research, based on a synthesis of the findings of the earlier chapters. Finally those areas that would benefit from further research are identified.

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Bothin, Ellinor. « Preservation of historically valuable buildings under the Planning and Building Law ». Thesis, KTH, Fastigheter och byggande, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147588.

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In today's society when the pressure is high on exploitation and on local governments and their decisions about resources, we must not forget our heritage. The built environment is an important part of the heritage and need to be taken care of and protected for future generations. Municipalities have the ability to work with preservation of historically valuable buildings with the help of the Planning and Building Law. By designing areas and impose restrictions on what the individual property owner may do with their building, the municipality can ensure that their ambitions of preservation are met. The purpose of this essay is to describe the methods that municipalities have available in the Planning and Building Law when it comes to the preservation of historically valuable buildings. The essay is partly based on a survey that was sent to the Swedish municipalities. The survey is primarily focused on the financial compensation a property owner may claim, if restrictions imposed on his building. An assumption that was made early in the process was that the compensation limits municipalities in planning for preservation. A previous study showed that financial compensation was not a problem in local preservation work. The conclusion I make after analyzed the answerers of the survey is that the majority of the responding municipalities, due to possible claims for financial compensation, in fact hesitant at imposing restrictions when planning for preservation of the historically valuable buildings. The survey also shows signs that building sanction fees rarely are charged for breaches.
I dagens samhälle som kantas av högt exploateringstryck och den ökade pressen på kommunerna och deras beslut om resurser, så får vi inte glömma vårt kulturarv. Den byggda miljön är en viktig del i kulturarvet och behöver tas hand om och bevaras till kommande generationer. Kommunerna har möjligheten att arbeta med bevarande av kulturhistoriskt värdefull bebyggelse med hjälp av plan- och bygglagens regler. Genom att planlägga områden och införa restriktioner för vad den enskilde fastighetsägaren får göra med sin byggnad, kan kommunen säkerställa att deras bevarandeambitioner uppfylls. Syftet med denna uppsats är att beskriva de metoder som kommunerna har att tillgå i planoch bygglagen när det kommer till bevarande av kulturhistoriskt värdefull bebyggelse. Uppsatsen bygger delvis på en enkät som har skickats ut till Sveriges kommuner. Enkäten inriktar sig främst på den ekonomiska ersättning som en fastighetsägare kan göra anspråk på, om restriktioner påförs dennes byggnad. Ett antagande som gjordes tidigt i arbetet var att ersättningen begränsar kommunerna vid planläggning för bevarande. En tidigare studie visade att den ekonomiska ersättningen inte var ett problem i kommunernas bevarandearbete. Den slutsats som jag kommer till efter en analys av svaren från enkätundersökningen är att majoriteten av de svarande kommunerna, på grund av eventuella anspråk på den ekonomiska ersättningen, i själva verket tvekar vid införande av restriktioner för bevarande av kulturhistoriskt värdefull bebyggelse. Enkätundersökningen visar även tendenser på att byggsanktionsavgifter sällan tas ut vid överträdelser.

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Susman, Gideon. « The application of phase change materials to cool buildings ». Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/7639.

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Five projects improve understanding of how to use PCM to reduce building cooling energy. Firstly, a post-installation energy-audit of an active cooling system with PCM tank revealed an energy cost of 10.6% of total cooling energy, as compared to an identical tankless system, because PCM under%cooling prevented heat rejection at night. Secondly, development of a new taxonomy for PCM cooling systems allowed reclassification of all systems and identified under-exploited types. Novel concept designs were generated that employ movable PCM units and insulation. Thirdly, aspects of the generated designs were tested in a passive PCM sail design, installed in an occupied office. Radiant heat transfer, external heat discharge and narrow phase transition zone all improved performance. Fourthly, passive PCM product tests were conducted in a 4.2 m3 thermal test cell in which two types of ceiling tile, with 50 and 70% microencapsulated PCM content, and paraffin/copolymer composite wallboards yielded peak temperature reductions of 3.8, 4.4 and 5.2 °C, respectively, and peak temperature reductions per unit PCM mass of 0.28, 0.34 and 0.14 °C/kg, respectively. Heat discharge of RACUS tiles was more effective due to their non-integration into the building fabric. Conclusions of preceding chapters informed the design of a new system composed of an array of finned aluminium tubes, containing paraffin (melt temperature 19.79 °C, latent heat 159.75 kJ/kg) located below the ceiling. Passive cooling and heat discharge is prioritised but a chilled water loop ensures temperature control on hotter days (water circulated at 13 °C) and heat discharge on hotter nights (water circulated at 10 °C). Test cell results showed similar passive performance to the ceiling tiles and wallboards, effective active temperature control (constant 24.6˚C air temperature) and successful passive and active heat discharge. A dynamic heat balance model with an IES% generated UK office’s annual cooling load and PCM temperature%enthalpy functions predicted annual energy savings of 34%.

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Villegas, Teresa, et Kimberly Wennberg. « Centrala faktorer för lyckade påbyggnationer : En kvalitativ utredning i samarbete med Fabege ». Thesis, KTH, Fastigheter och byggande, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-288908.

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Byggsektorn genererar årligen stora ekologiska fotavtryck genom rivning av byggnader, då behovet av allt fler byggnader ökar i städerna, men det dessvärre råder en brist på exploaterbar mark. En alternativ lösning för att staden fortfarande ska kunna växa är att bygga på höjden och på så sätt förtäta städerna. Detta görs idag ofta genom rivning av den befintliga byggnaden för att kunna ersätta den med nybyggnation, vilket inte alls är hållbart. Det är inte rimligt att riva fullt fungerande byggnader av bra kvalité enbart för att öka mängden LOA1 och BOA2. Återanvändning är nyckeln för ett mer hållbart byggande och en alternativ lösning för att öka LOA och BOA är då att genom påbyggnation addera ytterligare våningar på redan befintliga byggnader. Syftet med denna utredning är att underlätta beslutstagandet i utredandet av det befintliga beståndet. Genom att analysera byggnaders potential för påbyggnation i tidigt skede så kan riskerna minimeras för oväntade kostnader.Vi har genom en kvalitativ utredning som främst tagits fram genom intervjuer med branschkunniga, arbetat för att identifiera mönster hos fyra redan slutförda påbyggnationer som gjorts av Fabege. Vi anser att genom att identifiera de fallgropar som kan uppkomma vid arbeten med påbyggnationer som ekonomiskt och tidsmässigt kan minimera risk och förhindra problem. Detta utförs i förhoppning att uppmuntra fler byggaktörer att påbörja fler påbyggnationer, eftersom påbyggnader i dagsläget associeras med krångel och oväntade kostnader, vilket gör att många aktörer inte vågar försöka. Denna metod som tas fram blir i form av en lathund som stegvis kan följas, där samtliga centrala faktorer vilka vi i denna utredning kallar benchmarks3 gås igenom. Varje central faktor som bedömdes som avgörande för en lyckad påbyggnad klassades i skala A, B och C för hur pass viktig den faktorn ansågs för att klara av en storskalig påbyggnad. Med storskaliga påbyggnationer menar vi främst större kontorsbyggnader där cirka 4–5 våningar är aktuellt att byggas på.För att enkelt kunna göra bedömningen så inkluderar lathunden ett polärdiagram där de olika faktorerna sammanställts. Genom ifyllning av denna, utifrån den befintliga byggnadens förutsättningar kan utredaren då få en visuell överblick över vilka faktorer som kan komma att vara hinder under byggarbetets gång.Lathunden inkluderar även en stegvis beskrivning på hur processen inleds för en påbyggnation och även fördjupningspunkter som ska ses över i tidigt skede för att minimera framtida kostnader och svårigheter.Nyckeln till en lyckad påbyggnation är goda kunskaper och grundligt förarbete. Därför tar vi fram denna lathund för att upplysa vad som är viktigt att se över i tidigt skede och lägger en god grund kunskapsmässigt och översiktmässigt. Detta för att fler byggnader ska kunna prövas som potentiella påbyggnationer.
The construction sector generates large ecological footprints annually through the demolition of buildings, as the need for more and more buildings increases in the cities, but unfortunately there is a shortage of exploitable land. An alternative solution for the city still being able to grow is to build on the height and thus densify the cities. This is often done today by demolition of the existing building in order to be able to replace it with new construction, which is not at all sustainable. It is not reasonable to demolish fully functional buildings of good quality only to increase the amount of LOA and BOA. Recycling is the key to a more sustainable construction and an alternative solution for increasing LOA and BOA is to add additional floors to already existing buildings by extension. The purpose of this investigation is to facilitate the decision making in the investigation of the existing stock. By analyzing the potential of buildings for upgrading at an early stage, the risks can be minimized for unexpected costs.Through a qualitative study, which was mainly produced through interviews with industry experts, we have worked to identify patterns of four already completed extensions made by Fabege. We believe that by identifying the pitfalls that can arise during construction with extension work can economically and temporally minimize risk and prevent problems. This is done in the hope of encouraging more companies in the field to start more constructions of this kind, as this type of building is currently associated with hassle and unexpected costs, which means that many players do not dare to try. This method that is developed will be in the form of a “reference card” that can be followed step by step, where all the key factors that we in this investigation call “benchmarks” are reviewed. Each central factor that was judged to be crucial for a successful extension was classified in scale A, B and C for how important this factor was considered to cope with a large-scale extension. By large-scale superstructures we mean mainly larger office buildings where approximately 4-5 floors are currently being built.To be able to easily make the assessment, the crib includes a polar diagram in which the various factors are compiled. By filling this in on the basis of the existing building's conditions, the investigator can then get a visual overview of what factors may be obstacles during the construction work.The guide also includes a step-by-step description of how the process begins for an extension and also in-depth points to be reviewed at an early stage to minimize future costs and difficulties.The key to a successful extension is good knowledge and thorough preparation. Therefore, we present this reference card to inform what is important to revise at an early stage and put a good foundation of knowledge and overview. This means that more buildings can be tested as potential additions.

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Loong, Cheuk-yui Michael, et 龍焯銳. « Impact of different construction methods for concrete buildings on waste management ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31255942.

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Ozdenefe, Murat. « Phase change materials and thermal performance of buildings in Cyprus ». Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/phase-change-materials-and-thermal-performance-of-buildings-in-cyprus(a7b37f53-22de-47d4-ad19-2596ee75a558).html.

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This work investigates the thermal performance of buildings in Cyprus and application of a particular passive technology; Phase Change Materials (PCMs) for the ultimate aim of reducing indoor air temperatures and energy supplied for the cooling season.PCMs for passive building applications are emerging technology and have not been tested for the buildings of Cyprus neither by computer simulations nor by practical applications. In this work, particular PCM end product; wallboard, having phase change temperature of 26 oC is employed together with various construction materials and simulated for buildings of Cyprus. Description of the current state in Cyprus has been carried out in terms of low energy building studies, widely used building fabric and building statistics. There is a huge gap in Cyprus in the field of energy performance and thermal comfort of buildings, which creates big room for research. Climatic design of buildings has been abandoned resulting in poor thermal comfort and increased energy consumption. There is still no regulation in place regarding the thermal performance of buildings in North Cyprus.Recent weather data of different Cyprus locations has been investigated and compared with the simulation weather data files that are employed in this work. The author has demonstrated that Finkelstein-Schafer statistics between recent weather data of Cyprus and simulation weather data files are close enough to obtain accurate results.Dynamic thermal simulations has been carried out by using Energy Plus, which is a strong and validated thermal simulation program that can model PCMs. Simulations are done for two different building geometry; “simple building” and “typical building” by employing different construction materials. Simple building is a small size box shaped building and typical building is a real existing building and selected by investigation of the building statistics.Simulation results showed that with this particular PCM product, indoor air temperatures and cooling energies supplied to simple building is reduced up to 1.2 oC and 18.64 % when heavier construction materials are used and up to 1.6 oC and 44.12 % when lighter construction materials are used. These values for typical building are found to be 0.7 oC, 3.24 % when heavier construction materials are used and 1.2 oC, 3.64 % when lighter construction materials are used. It is also found that, if thinner walls and slabs are used in the buildings the effectiveness of the PCM lining increases in significant amount.

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Dyball, Dianne L. « An innovative wall-lining for buildings incorporating phase change materials ». Thesis, University of Brighton, 2013. https://research.brighton.ac.uk/en/studentTheses/efdce4e8-dbb0-407b-9d57-ac45820e6743.

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The use of thermal energy storage in buildings is well understood but contemporary buildings with highly insulated, lightweight construction have low thermal inertia. This causes them to respond rapidly to external temperature changes, which results in significant internal temperature fluctuations and overheating. This research addresses this problem by developing a thermal interactive wall-lining through the inclusion of phase change materials. Phase change materials (PCMs) not only absorb sensible heat but also absorb and release latent heat during phase transition. This research set out to determine if it is possible to locate phase change materials on the surface of a room and if they can effectively improve the thermal performance of a room. Using the scientific method the suitability of different types of PCMs was investigated for inclusion within a vinyl matrix. Experiments evaluated the maximum quantity of PCM loading and thermal analysis identified the largest potential heat storage capacity for the phase change wall-lining. Following successful laboratory experiments a pilot scale prototype phase change wall-lining was manufactured and tested. The test involved an experiment comprising two thermally matched chambers to evaluate the thermal performance of the phase change wall-lining in a controlled environment. The results demonstrated the phase change wall-lining can reduce internal temperatures by more than 2°C and delay the time taken to reach extreme temperatures. The effect of different air flow rates on the ability to charge and discharge the phase change wall-lining have been evaluated to identify the required operating criteria for use in buildings. This research has developed an innovative phase change wall-lining that reduces internal peak temperatures, minimises diurnal temperature fluctuations by storing excess heat and improves the thermal comfort. The outcomes provide a greater understanding of the interaction between air and PCMs when located on the surface of a room, and indicate that such materials have the potential to improve thermal performance of new and existing buildings.

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Javed, Khalid. « Non linear seismic response of asymmetric buildings ». Thesis, University of East London, 1999. http://roar.uel.ac.uk/1260/.

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The study presented in this thesis is an attempt towards a better understanding of the coupled lateral-torsional response of buildings subject to seismic ground motion. Some of the problems identified in the past studies are thoroughly investigated and some new areas of study are explored. Some of these problems encountered in the literature include (a) the existence of several definitions of uncoupled torsional to lateral frequency ratio (b) an arbitrary selection of structural parameters in a parametric analysis resulting in a physically inadmissible structure and (c) the effect of nonlinearity. Because of the simplified models with either eccentricity in one direction or the ground motion applied in only one direction, the effects of a bi-directional loading have not been investigated in detail. These effects may include the relative differences in the amplitude or phase components of the individual accelerograms and their orientation with respect to the building. The phase properties of accelerograms are of particular interest and these have not received much attention in the past. Using analytical methods such as Chasle's[16] and Gerschgorin's[39] theorems, the equation of motion of a bi-eccentric system is derived and all of the existing problems regarding the definition of structural parameters and their bounds are studied in depth. To facilitate nonlinear parametric study, a paraboloid non-linear elastic stiffness model is proposed. Fourier spectral methods are used to study the frequency domain characteristics of the accelerogram pair. The difference in phase and amplitude of the component frequencies in each direction are studied for their effects on the response. For phase difference, cross-correlation function is used as a comparative statistical indicator. USA earthquake records obtained from US National Geophysical Data Centre are grouped into four soil types and the analysis is performed for each group in order to explore the soil-dependency of the aforementioned effects on the response. Computer programs are written in FORTRAN for both parametric and numerical model analyses. The latter can handle any number and orientation of columns with the assumed nonlinear stiffness properties. Newmark's and Runge-Kutta methods of numerical integration with adaptive step size control have been used to calculate parametric and the hysteretic responses of the system. The response to harmonic ground acceleration is used as a preliminary investigation into the response to actual accelerogram frequency components. The study has developed relationships for different definitions of the uncoupled torsional to lateral frequency ratio. Detailed derivation of the Equation of Motion has clarified the confusion that produced different definitions in the past studies. Graphical descriptions of the admissibility bounds on system parameters are produced. The variation in the response quantities is studied for a range of amplitude and phase contents of the applied ground acceleration. The difference in phase and amplitude in x and y ground accelerations have been found to affect the response quite significantly. More generally, the relationship of these differences to the torsional mode amplification has been observed. The effects of structural frequency and eccentricity parameters are also studied. Graphs showing the relationship between, the angle of incidence of the accelerogram with respect to the principal axis of the building, and the phase difference in the accelerogram pair, have been produced. The proposed analysis involving the bi-directional ground acceleration on a bi-eccentric system is an improvement on the current methods employed in design practice. Further work is, however, required before simplified design recommendations can be made and some proposals for future research are given at the end of this thesis.

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Løtveit, Sjur Vullum. « Cost Optimality of Energy Systems in Zero Emission Buildings in Early Design Phase ». Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23249.

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The building sector accounts for a significant proportion of industrial countries total energy use, thus a cut in this sector has been regarded necessary to reach future climate goals. An important measure in this context is the introduction of zero emission buildings, buildings which can be defined as having a net zero annual energy demand. This master thesis is centered around finding cost optimal energy supply systems for zero emission buildings at an early stage of the building process. This thesis is closely linked to the Ådland project, currently the largest pilot project for the Research Center on Zero Emission Buildings. The testing was performed on a four floor building block located in Bergen. The ZEB-definition used was net zero primary energy consumption, where primary energy factors were used as weighting factors for the various energy carriers. Two types of primary energy factors were tested; total primary energy factors and non-renewable primary energy factors. Five different energy supply packages were investigated: Bio+PV, CHP+PV, DH+PV, HP+ST+PV and CHP+ST+PV. The base heating systems were dimensioned to cover the heating demand (space heating and domestic hot water), while PV was dimensioned so that the building reached the ZEB balance. Excess electricity was exported to the grid and sold to the local power company. The simulation tool IDA-ICE was used both for modeling the building and performing the energy simulations. The cost calculations followed the European Cost Optimal Methodology, calculating the net present value of all costs attributed to the implementation of the different packages (investments, annual costs and residual values) over a calculation period of 30 years. Both a pure financial and a macroeconomic calculation were performed for all packages. Sensitivity analyses were performed on the energy price escalation as well as investment costs.When total primary energy factors were used, the package HP+ST+PV proved to be the optimal package in all the different scenarios considered. The macroeconomic and the financial results were almost identical, mainly because of the low CO2-prices. The sensitivity analyses showed that the result is very stable with respect to uncertainties in both investment costs and future energy costs. For non-renewable primary energy factors the results showed that the package HP+ST+PV is best for both normal and high future energy price development, while the package Bio+PV was the best alternative for low energy price developments. The sensitivity analysis on investment cost showed the result for low energy price development was very sensitive for changes in investment costs, while for medium and high energy price development the result were more stable. Overall, for the energy supply packages considered and the primary energy factors used in this thesis, the conclusion is that HP+ST+PV is the cost optimal energy supply solution for the evaluated building.

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Livres sur le sujet "Demolition phase of buildings"

Abgerissen ! : Verschwundene Bauwerke in Berlin = Demolition ! : Berlin's lost buildings. Berlin : Jaron, 2007.

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Demolition and reconstruction in the old quarter of Lhasa 1993. London : Tibet Information Network, 1994.

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Hanlon, Maria Letunic. Demolition delay protection : A guide for local historical commissions. Boston, Mass.] : Massachusetts Historical Commission, 1989.

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The Kathmandu Valley : New buildings, sites under construction and demolition, 1990-2011. Kathmandu : Himal Books, 2012.

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International, RILEM Symposium on the Demolition and Reuse of Concrete and Masonry (3rd 1993 Odense Denmark). Demolition and reuse of concrete and masonry : Guidelines for demolition and reuse of concrete and masonry : proceedings of the Third International RILEM Symposium on Demolition and Reuse of Concrete Masonry, held in Odense, Denmark, 24-27 October 1993. London : E & FN Spon, 1994.

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San Francisco (Calif.). Planning Dept., dir. Geneva Office Building and power house demolition project : Draft environmental impact report. San Francisco, CA : Planning Dept., 1998.

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Blom, Inge. Environmental impacts during the operational phase of residential buildings. Amsterdam : IOS Press, 2010.

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California Integrated Waste Management Board. Military base closure handbook : A guide to construction and demolition materials recovery. Sacramento, CA : California Environmental Protection Agency, Integrated Waste Management Board, 2002.

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(Canada), Maritime Provinces Higher Education Commission. Space inventory audit - Phase II study of the condition of buildings. Halifax : Maritime Provinces Higher Education Commission, 1991.

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California Integrated Waste Management Board. The Capitol Area East End Office Complex : A case for construction and demolition waste diversion. Sacramento, Calif.] : State of California, Integrated Waste Management Board, 2003.

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Chapitres de livres sur le sujet "Demolition phase of buildings"

Ding, G. K. C. « Embodied Carbon in Construction, Maintenance and Demolition in Buildings ». Dans Embodied Carbon in Buildings, 217–45. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72796-7_10.

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Guionneau, Edward J., Hoda Akbari et Sarah J. McCormack. « Use of Phase Change Materials for Solar Systems Applications ». Dans Renewable Energy and Sustainable Buildings, 847–58. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18488-9_70.

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Fetfatzis, P., P. Kofinas, M. Kallousis, C. Alafodimos et C. Stergiou. « Transformerless 3-Phase PV Inverter Simulation for Efficient Building Installations ». Dans Sustainability in Energy and Buildings, 517–24. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27509-8_43.

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Gonzalez, R. E., M. T. Stephens, C. Toma, K. J. Elwood et D. Dowdell. « Post-earthquake Demolition in Christchurch, New Zealand : A Case-Study Towards Incorporating Environmental Impacts in Demolition Decisions ». Dans Springer Tracts in Civil Engineering, 47–64. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68813-4_3.

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AbstractThe 2010/2011 Canterbury Earthquake Sequence resulted in severe loss and disruption in Christchurch, New Zealand due to liquefaction and damage from strong shaking. Following the earthquake, over 60% of concrete buildings with 3 + stories in the Christchurch CBD were demolished, resulting in a widespread displacement of people and business, an excess of $NZD 40 billion in losses, and significant environmental impacts from the demolition. Following the event, it was revealed that environmental impacts were not a direct consideration in demolition decision making. This paper provides a quantitative evaluation of the environmental impacts of the demolitions in Christchurch to highlight the importance of including environmental considerations when deciding between repair or demolition of a damaged building. First, the quantitative and qualitative factors that led to the demolitions following the Canterbury Earthquake Sequence are discussed to provide context for the argument that environmental impacts should be included in such considerations. Next, the environmental impacts of building demolitions in Christchurch are presented in terms of the embodied CO2 and energy in the building materials; the demolition process and waste disposal are not considered in this initial evaluation. Finally, a brief discussion on incorporating environmental impacts into the demolition decision making paradigm is presented. Moreover, consideration of environmental impacts of demolitions supports the need to move toward low-damage design in the future evolution of building codes.

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Ip, K., A. Miller, T. Corner et D. L. Dyball. « Development of Phase Change Thermal Storage Wallcoverings in Buildings ». Dans Smart & ; Sustainable Built Environments, 95–102. Oxford, UK : Blackwell Publishing Ltd, 2008. http://dx.doi.org/10.1002/9780470759493.ch9.

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Alexander, Nicholas A., Faiz A. Noor et Khalid Javed. « Response of asymmetric buildings to ground motion phase component ». Dans Seismic Design Practice into the Next Century, 99–106. London : Routledge, 2022. http://dx.doi.org/10.1201/9780203740026-14.

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Salgado, Rebeca, Hoda Akbari, Maria C. Brown, Isobelle Reid et Sarah J. McCormack. « Study of Corrosion Effect of Micronal® Phase Change Materials (PCM) with Different Metal Samples ». Dans Renewable Energy and Sustainable Buildings, 709–17. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18488-9_57.

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Kayaçetin, Nuri Cihan, Stijn Verdoodt, Lode Lefevre et Alexis Versele. « Evaluation of Circular Construction Works During Design Phase : An Overview of Valuation Tools ». Dans Sustainability in Energy and Buildings 2021, 89–100. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-6269-0_8.

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Actes de conférences sur le sujet "Demolition phase of buildings"

Arora, Mohit, Felix Raspall et Arlindo Silva. « Identifying Design Interventions in Cities for Urban Sustainability ». Dans ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85808.

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Cities have been the focus of recent sustainability and climate change mitigation efforts primarily because of unprecedented urban growth and ever-increasing resources consumption. A worrying trend has been the ever-decreasing life of buildings in cities because of premature building obsolescence. Premature building obsolescence has been cited as the major driver of demolition waste which accounts for more than 40% of total waste generated annually. This waste stream poses a bigger challenge as the pressure on natural resources increases with urban growth. A traditional way of looking at the urban sustainability has been from the perspective of the environmental sciences and waste management methods. Analyzing urban areas with design science perspectives could provide novel insights to improve existing resource consumption patterns and transform sustainability growth in cities. This study focuses on the problem of demolition waste arising from the premature building obsolescence in cities. It applies a design research methodology framework for identifying existing problems associated with demolition waste and generating strategies to transform cities into more sustainable urban systems. In the problem clarification phase, a detailed literature review was supported with stakeholder’s interviews to identify the state-of-art for building demolition process and demolition waste. Research was further extended to descriptive study-I phase to carry out a demolition case study and generate support tools to enable transformation in the existing scenario for achieving a desired state. Singapore, a dense city state of South-East Asia has been taken as a case study in this research. Results show that applying design research methods could help open-up a new dimension to solve urban sustainability challenge for built environment. It highlights that material reuse could lead to significant improvement in the built environment sustainability but the challenge associated with realization of material reuse practice needs to be addressed. Descriptive study-I concludes with the strategies on creating a reuse market through entrepreneurial innovation and an alternative material supply chain of secondary materials for regional housing demand. These results highlight the role of design research methods for tackling complex systems level problems in cities.

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Kamal, Athar, Sami G. Al-Ghamdi et Muammer Koc. « Building Stock Inertia and Impacts on Energy Consumption and CO2 Emissions in Qatar ». Dans ASME 2019 13th International Conference on Energy Sustainability collocated with the ASME 2019 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/es2019-3854.

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Abstract Greenhouse gas emission reduction and the consequent decrease in the environmental impacts of fossil fuel can be achieved by cutting back on energy consumption in the building sector that consumes around 30% of total final energy around the globe. The building sector is a complex component of the modern economy and life and includes diverse types of structures, uses, and energy patterns. Such variability is a result of the way that buildings are designed, built, and used in addition to the variations of their materials, equipment, and users. From the start of the construction phase until their demolition, buildings involve energy consumption. A single building’s energy consumption pattern can be called its energy inertia, that is the way it consumes energy throughout its lifetime. Energy consumption also varies according to the age of the buildings. As a building gets older, its structure and equipment start losing their efficiency and often lead to increasing energy consumption over time. At any given time, the building sector is composed of structures of various ages. Some are under construction, others are recently built, some have lived to be mature and some quite old enough to be demolished. This complexity in the building sector creates a momentum against implementation of policies that reduce energy consumption. In this study, a system dynamic model is developed to perceive the temporal evolution of energy consumption and efficiency measures for the villa-type building stock in Qatar. This model tests energy efficiency policy measures such as renovation rates of 15 and 30 years, for buildings that are considered old, and also examines implementation of technology and building codes for new buildings. Results reveal savings of between 157 GWh and 1,275 GWh of electricity and reduction in CO2 emissions ranging from 77,000 tonnes to 602,000 tonnes.

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Schultz, Joshua A., et Mark R. Muszynski. « Small-scale testing for feasibility of rubblized concrete foundations ». Dans IABSE Congress, Ghent 2021 : Structural Engineering for Future Societal Needs. Zurich, Switzerland : International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/ghent.2021.0159.

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Affordable, sustainable housing plays an essential role in providing equal opportunity for individuals within most communities in the United States, (e.g., in the area of eastern Washington State). In particular, a lack of family residences presents a challenge for the City of Spokane, and low-income residents. Moreover, building materials reuse is an important sustainability issue and concrete waste from demolition of residential buildings presents a challenge. This paper presents preliminary results for development of rubblized concrete foundations. Initial tests were conducted on scaled pseudo-soil/concrete materials to observe the relative stiffness of the proposed system for potential use in planning subsequent phases of testing, including full-scale testing. Initial results of this early testing confirms that a reinforced rubblized footing will likely have an overall stiffness (in terms of response to loading) that is measurably less than that of a conventional reinforced concrete footing.

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Charvátová, Klára. « Faktory a překážky ovlivňující úspěšnost regenerace brownfields zemědělského původu v Jihomoravském kraji ». Dans XXV. mezinárodní kolokvium o regionálních vědách. Brno : Masaryk University Press, 2022. http://dx.doi.org/10.5817/cz.muni.p280-0068-2022-22.

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The article is focused on the regeneration process of agricultural brownfields in the South Moravian Region. The selected area was intensively used for agriculture in the past, and as a result of deagrarization, a large number of brownfields originated in this area. Unused and abandoned buildings bring many problems, they are often demolished, and subsequently, new buildings are built in their place. Regeneration, which is usually more complicated than demolition and new construction, can be a much better option, however, its result can be far more valuable. During regeneration, many circumstances can be encountered that contribute to the successful restoration of the site, as well as obstacles that need to be overcome. Therefore, the aim of the article is to find, with the help of semi-structured interviews with stakeholders, the most common factors and obstacles associated with the successful regeneration of the agricultural brownfields in the South Moravian Region and suggest possible recommendations for streamlining regeneration processes. The research showed that an essential prerequisite for successful regeneration is the preparatory phase, in which a decision is made on the meaningful use of the brownfield. The next necessary step is resolving the property law relationship, securing financial resources, processing project documentation, and examining all risks that could complicate the regeneration activities. After that, it depends mainly on the involved stakeholders, their motivation, mutual cooperation and a thoughtful procedure that bring the whole project to successful completion and subsequent operation.

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Staples, A. T., S. Latinwo, S. J. Parkingson et J. Appleton. « Successful Team Working in Major Nuclear Decommissioning Project : Progress on Environmental Restoration at UKAEA Winfrith ». Dans ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4622.

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Following a successful contract relationship between UKAEA and RWE NUKEM Ltd. to provide operational and decommissioning services for Building A59 (a post-irradiation examination facility) at UKAEA Winfrith, additional major tasks under the WOMAD (Winfrith Operations, Maintenance, and Decommissioning) Project were competitively won by RWE NUKEM. The WOMAD Project advances implementation of the overall environmental remediation mission for the UKAEA Winfrith site. This paper describes the four main parts of the WOMAD Project at Winfrith that are being conducted by RWE NUKEM. The WOMAD Project consists of the following tasks: • Care and maintenance of the two large nuclear reactors SGHWR and DRAGON. • Operation of Building A59 for 1 year followed by decommissioning and demolition. • Conditioning and immobilization of ∼350,000 litres of radioactive sludge in 500-litre drums followed by demolition of the sludge storage tanks. • Refurbishment of a storage facility and emplacement of the drummed waste. These tasks are performed by RWE NUKEM and the overall project is managed by UKAEA within the constraints imposed by the site licensee. The work is being implemented via a contract with RWE NUKEM using the New Engineering Contracts (NEC) suite of contracts (Options A and C) as established by the Institution of Civil Engineers. This framework was chosen because it facilitates good project management practices and encourages a team approach. This strategy has been taken to heart within the project and many joint initiatives are being used to develop an effective team that is working toward a common goal. In the relatively short time since contract award (March 2000), decommissioning in Building A59 is currently ahead of schedule and a number of technical hurdles have been overcome. The new facility for processing the external active sludge tank (EAST) wastes has been designed, planning permission has been obtained, and construction has begun. The first phase of safety submittals was also completed, and a Stage 2 Letter of Comfort was obtained from UK Nirex following a series of small-scale active development tasks. This presentation will feature current progress regarding schedule, cost, and quality aspects and will be an update on the position given to the IMechE Decommissioning Conference in 2001 [1] and the IBC Decommissioning Conference in 2002. [2]

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Metcalfe, Douglas, Pui Wai Yuen, Dave McCauley, Sheila Brooks, Joan Miller et Michael Stephens. « Implementation and Ongoing Development of a Comprehensive Program to Deal With Canada’s Nuclear Legacy Liabilities ». Dans ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16039.

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Nuclear legacy liabilities have resulted from 60 years of nuclear research and development carried out on behalf of Canada by the National Research Council (1944 to 1952) and Atomic Energy of Canada Limited (AECL, 1952 to present). These liabilities are located at AECL research and prototype reactor sites, and consist of shutdown reactors, research facilities and associated infrastructure, a wide variety of buried and stored waste, and contaminated lands. In 2006, the Government of Canada adopted a new long-term strategy to deal with the nuclear legacy liabilities and initiated a five-year, $520 million (Canadian dollars) start-up phase, thereby creating the Nuclear Legacy Liabilities Program (NLLP). The objective of the long-term strategy is to safely and cost-effectively reduce risks and liabilities based on sound waste management and environmental principles in the best interests of Canadians. The five-year plan is directed at addressing health, safety and environmental priorities, accelerating the decontamination and demolition of shutdown buildings, and laying the groundwork for future phases of the strategy. It also includes public consultation to inform the further development of the strategy and provides for continued care and maintenance activities at the sites. The NLLP is being implemented through a Memorandum of Understanding between Natural Resources Canada (NRCan) and AECL whereby NRCan is responsible for policy direction and oversight, including control of funding, and AECL is responsible for carrying out the work and holding and administering all licences, facilities and lands. The paper summarizes achievements during the first three years of program implementation in the areas of decommissioning and dismantling; waste recovery and environmental restoration; the construction of enabling facilities to analyze, handle and store the legacy waste; and, planning for the long-term management of the radioactive waste.

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Shephard, Eugene, Nelson Walter, Heath Downey, Peter Collopy et John Conant. « Remediation of Uranium Impacted Sediments in a Watercourse ». Dans ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96115.

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In 2009, remediation was initiated for a non-operational fuel cycle facility previously used for government contract work located in Windsor, Connecticut, USA. Radiological contaminants consisted primarily of high enriched uranium (HEU). Other radionuclides encountered in relatively minor amounts in certain areas of the clean-up included Co-60, Cs-137, Ra-226, Th-232 and low enriched uranium (LEU). Between 2009 and the spring of 2011, remediation efforts were focused on demolition of contaminated buildings and removal of contaminated soil. In the late spring of 2011, the last phase of remediation commenced involving the removal of contaminated sediments from portions of a 1,200 meter long gaining stream. Planning and preparation for remediation of the stream began in 2009 with submittal of permit applications to undertake construction activities in a wetland area. The permitting process was lengthy and involved securing permits from multiple agencies. However, early and frequent communication with stakeholders played an integral role in efficiently obtaining the permit approvals. Frequent communication with stakeholders throughout the planning and remediation process also proved to be a key factor in timely completion of the project. The remediation of the stream involved the use of temporary bladder berms to divert surface water flow, water diversion piping, a sediment vacuum removal system, excavation of sediments using small front-end loaders, sediment dewatering, and waste packaging, transportation and disposal. Many safeguards were employed to protect several species of concern in the work area, water management during project activities, challenges encountered during the project, methods of Final Status Survey, and stream restoration.

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Shi, Jianjun, Meng Haili et Wu Chunping. « Buildings' collapsing vibration caused by demolition blasting ». Dans 2011 International Conference on Electric Technology and Civil Engineering (ICETCE). IEEE, 2011. http://dx.doi.org/10.1109/icetce.2011.5775993.

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Droppo, James G., Bruce A. Napier, Jeremy P. Rishel et Richard W. Bloom. « Use of Source Term and Air Dispersion Modeling in Planning Demolition of Highly Alpha-Contaminated Buildings ». Dans ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59254.

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The current cleanup of structures related to cold-war production of nuclear materials includes the need to demolish a number of highly alpha-contaminated structures. The process of planning for the demolition of such structures includes unique challenges related to ensuring the protection of both workers and the public. Pre-demolition modeling analyses were conducted to evaluate potential exposures resulting from the proposed demolition of a number of these structures. Estimated emission rates of transuranic materials during demolition are used as input to an air-dispersion model. The climatological frequencies of occurrence of peak air and surface exposures at locations of interest are estimated based on years of hourly meteorological records. The modeling results indicate that downwind deposition is the main operational limitation for demolition of a highly alpha-contaminated building. The pre-demolition modeling directed the need for better contamination characterization and/or different demolition methods—and in the end, provided a basis for proceeding with the planned demolition activities. Post-demolition modeling was also conducted for several contaminated structures, based on the actual demolition schedule and conditions. Comparisons of modeled and monitoring results are shown. Recent monitoring data from the demolition of a UO3 plant shows increments in concentrations that were previously identified in the pre-demolition modeling predictions; these comparisons confirm the validity and value of the pre-demolition source-term and air dispersion computations for planning demolition activities for other buildings with high levels of radioactive contamination.

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Rapports d'organisations sur le sujet "Demolition phase of buildings"

JACOBS ENGINEERING GROUP INC ANCHORAGE AK. Environmental Assessment for Demolition of Buildings 5303 and 5312. Fort Belvoir, VA : Defense Technical Information Center, juin 2013. http://dx.doi.org/10.21236/ada609767.

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Napier, Bruce A., Jeremy P. Rishel et James G. Droppo. Analysis of Radioactive Releases During Proposed Demolition Activities for the 224-U and 224-UA Buildings. Office of Scientific and Technical Information (OSTI), mars 2009. http://dx.doi.org/10.2172/1000643.

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Napier, Bruce A., Jeremy P. Rishel, James G. Droppo, Kevin E. Joyce et Daniel J. Strom. Analysis of Radioactive Releases During Proposed Demolition Activities for the 224-U and 224-UA Buildings - Addendum. Office of Scientific and Technical Information (OSTI), décembre 2010. http://dx.doi.org/10.2172/1000820.

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Ernst, Moira, Jean Fulton, Sonya Cooper et Joe C. Freeman. Buildings 107, 289, and 291 Demolition, HABS/HAER Architectual Assessment, Holloman Air Force Base, Otero County, New Mexico. Fort Belvoir, VA : Defense Technical Information Center, janvier 1998. http://dx.doi.org/10.21236/ada335810.

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Garland S. Phased Construction Completion Report for Building K-1401 of the Remaining Facilities Demolition Project at the East Tennessee Technology Park Oak Ridge, Tennessee. Office of Scientific and Technical Information (OSTI), mars 2008. http://dx.doi.org/10.2172/1015993.

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Persily, Andrew, Cynthia Howard Reed, Stephanie S. Watson, Nicos Martys, Edward J. Garboczi et Heather Davis. Standards development for gas phase air cleaning equipment in buildings. Gaithersburg, MD : National Institute of Standards and Technology, 2008. http://dx.doi.org/10.6028/nist.ir.7525.

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Moheisen, Ragab M., Keith A. Kozlowski, Aly H. Shaaban, Christian D. Rasmussen, Abdelfatah M. Yacout et Miriam V. Keith. Utilization of Phase Change Materials (PCM) to Reduce Energy Consumption in Buildings. Fort Belvoir, VA : Defense Technical Information Center, septembre 2011. http://dx.doi.org/10.21236/ada554348.

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None, None. SECTION 106 RECORDATION, INTERPRETATION, AND DOCUMENTATION FOR THE DEMOLITION OF BUILDINGS 9201-5 AND 9204-4, Y-12 NATIONAL SECURITY COMPLEX, OAK RIDGE, TENNESSEE. Office of Scientific and Technical Information (OSTI), octobre 2021. http://dx.doi.org/10.2172/1834058.

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Najjar, Stephen. Environmental Assessment for Demolition of Buildings 113, 130, 141, (West Wing), 256, 257, and the Boresight Tower at New Boston Air Force Station, New Hampshire. Fort Belvoir, VA : Defense Technical Information Center, septembre 2010. http://dx.doi.org/10.21236/ada533757.

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Salyer, I. O., A. K. Sircar et S. Dantiki. Advanced phase change materials and systems for solar passive heating and cooling of residential buildings. Office of Scientific and Technical Information (OSTI), janvier 1988. http://dx.doi.org/10.2172/5246122.

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