933 resultados para Construction Civil
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Purpose: Knowledge management (KM) is important to the knowledge-intensive construction industry. The diversified and changing nature of works in this field warrants us to stocktake, identify changes and map out KM research framework for future exploration. Design/methodology/approach: The study involves three aspects. First, three stages of KM research in construction were distinguished in terms of the time distribution of 217 target publications. Major topics in the stages were extracted for understanding the changes of research emphasis from evolutionary perspective. Second, the past works were summed up in a three-dimensional research framework in terms of management organization, managerial methodology and approach, and managerial objective. Finally, potential research orientations in the future were predicted to expand the existing research framework. Findings: It was found that (1) KM research has significantly blossomed in the last two decades with a great potential; (2) major topics of KM were changing in terms of technology, technique, organization, attribute of knowledge and research objectives; (3) past KM studies centred around management organization, managerial methodology and approach, and managerial objective thus a three-dimensional research framework was proposed; (4) within the research framework, team-level, project-level and firm-level KM were studied to achieve project, organizational and competitive objectives by integrated methodologies of information technology, social technique and KM process tool; and (5) nine potential research orientations were predicted corresponding to the three dimensions. Finally, an expanded research framework was proposed to encourage and guide future research works in this field. Research limitations/implications: The paper only focused on the construction industry. The findings need further exploration in order to discover any possible missing important research works which were not published in English or not included in the time period. Originality/value: The paper formed a systematic framework of KM research in construction and predicted the potential research orientations. It provides much value for the researchers who want to understand the past and the future of global KM research in the construction industry.
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The delivery of products and services for construction-based businesses is increasingly becoming knowledge-driven and information-intensive. The proliferation of building information modelling (BIM) has increased business opportunities as well as introduced new challenges for the architectural, engineering and construction and facilities management (AEC/FM) industry. As such, the effective use, sharing and exchange of building life cycle information and knowledge management in building design, construction, maintenance and operation assumes a position of paramount importance. This paper identifies a subset of construction management (CM) relevant knowledge for different design conditions of building components through a critical, comprehensive review of synthesized literature and other information gathering and knowledge acquisition techniques. It then explores how such domain knowledge can be formalized as ontologies and, subsequently, a query vocabulary in order to equip BIM users with the capacity to query digital models of a building for the retrieval of useful and relevant domain-specific information. The formalized construction knowledge is validated through interviews with domain experts in relation to four case study projects. Additionally, retrospective analyses of several design conditions are used to demonstrate the soundness (realism), completeness, and appeal of the knowledge base and query-based reasoning approach in relation to the state-of-the-art tools, Solibri Model Checker and Navisworks. The knowledge engineering process and the methods applied in this research for information representation and retrieval could provide useful mechanisms to leverage BIM in support of a number of knowledge intensive CM/FM tasks and functions.
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Construction firms that employ collaborative procurement approaches develop operating routines through joint learning so as to improve infrastructure project performance. This paper reports a study based on a survey sample of 320 construction practitioners which were involved in collaborative infrastructure delivery in Australia. The study developed valid and reliable scales for measuring collaborative learning capability (CLC), and used the scales to evaluate the CLC of contractor and consultant firms within the sample. The evaluation suggests that whilst these firms explore knowledge from both internal and external sources, transform both explicit and tacit knowledge, and apply and internalise new knowledge, they can improve the extent to which these routines are applied to optimise project performance.
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- Purpose The purpose of this paper is to investigate the current skills gap in both generic and skill areas within the construction industry in Queensland, Australia. - Design/methodology/approach An internet-based survey was administered to collect the opinions of construction employees about the workplace-training environment and their perceptions towards training. The survey intended to address the following research questions, specifically in relation to the construction industry. - Findings The survey results reveal that whilst overall participation in workplace training is high, the current workplace training environments do not foster balanced skill development. The study reveals that in the current absence of a formal and well-balanced training mechanism, construction workers generally resort to their own informal self-development initiatives to develop the needed role-specific theoretical knowledge. - Research limitations/implications The findings of the research are based on the data primarily collected in the construction industry in Queensland, Australia. The data are limited to a single Tier 2 construction company. - Practical implications The findings of this study can be utilised to suggest improvements in the current (or develop new) workplace training initiatives. - Social implications The research suggests that workplace training has positive relationship with career growth. The results suggest that in the construction industry, employees are generally well aware of the importance of workplace training in their career development and they largely appreciate training as being a critical factor for developing their capacity to perform their roles successfully, and to maintain their employability. - Originality/value This paper is unique as it investigates the current skills gap in both generic and skill areas within the construction industry in Queensland, Australia. So far no work has been undertaken to identify and discusses the main method of workplace learning within the Tier 2 industry in the context of Queensland Australia.
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The construction industries of developed countries are faced with an aging workforce and a shortage of recruits. It is common for migrant workers/ethnic minorities (EMs) who are already part of the society to join the construction industry. With increasing involvement of EMs in the construction industry, effective strategies for improving their safety and health are urgently needed. The existing body of knowledge is mainly derived from research conducted in English-speaking countries with Western cultures. Research on safety of migrant/EM construction workers in multidialect Asian countries with Eastern cultures has been lacking. This study aimed to identify various strategies for improving the safety and health of EM construction workers from the Asian perspective. Twenty-two face-to-face semistructured interviews were performed with safety professionals in Hong Kong followed by two rounds of Delphi survey with 18 safety experts to verify the interview findings and rank the relative importance of the strategies. The study unveiled 14 strategies for improving the safety performance of EM workers. The three most important ones identified were: (1) to provide safety training in EM native languages; (2) that government and industry associations should play an active role in promoting health and safety awareness of EM workers, and; (3) to encourage EM workers to learn the local language. This study contributes to filling the research gap by evaluating the strategies for improving safety of migrant/EM construction workers in Asian countries with Eastern cultures in which English is not the first language. Research findings would assist occupational health and safety experts and relevant stakeholders in designing strategies for improving the safety and health of EM workers, which will ultimately improve overall safety performance of the construction industry.
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"Safety of RMAA works is an almost uncharted topic of rising importance internationally. Small construction contractors are particularly dependant on RMAA work, especially during times of recession, and they undertake more risks on these jobs than large companies do. This book is based on unique international research and consultancy projects which detail, investigate, and suggest solutions to the specific challenges of safety in RMAA works, based on case studies. Starting with an overview of safety in the wider construction industries of developed countries, the first half of this book also provides a comprehensive summary of relevant rules, regulations, and the resulting safety performances. The systems in the UK, US and Hong Kong are described and contrasted, giving the reader an understanding of how different regulatory approaches have yielded a variety of results. From this solid introduction, specific problems observed in RMAA work are examined through case studies, with reference to the underlying cultural and demographic factors, and a variety of practical engineering and management solutions are explored. This important and practical international work is essential reading for postgraduate students of health and safety in construction, construction project management, or construction in developing countries, as well as policy-makers and construction project managers."--Publisher website
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This article reports on a cross-sectional case study of a large construction project in which Electronic document management (EDM) was used. Attitudes towards EDM from the perspective of individual end users were investigated. Responses from a survey were combined with data from system usage log files to obtain an overview of attitudes prevalent in different user segments of the total population of 334 users. The survey was followed by semi-structured interviews with representative users. A strong majority of users from all segments of the project group considered EDM as a valuable aid in their work processes, despite certain functional limitations of the system used and the complexity of the information mass. Based on the study a model describing the key factors affecting end user EDM adoption is proposed. The model draws on insight from earlier studies of EDM enabled projects and theoretical frameworks on technology acceptance and success of information systems, as well as the insights gained from the case study.
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This paper presents the case history of the construction of a 3 m high embankment on the geocell foundation over the soft settled red mud. Red mud is a waste product from the Bayer process of Aluminum industry. Geotechnical problems of the site, the design of the geocell foundation based on experimental investigation and the construction sequences of the geocell foundations in the field are discussed in the paper. Based on the experimental studies, an analytical model was also developed to estimate the load carrying capacity of the soft clay bed reinforced with geocell and combination of geocell and geogrid. The results of the experimental and analytical studies revealed that the use of combination of geocell and the geogrid is always beneficial than using the geocell alone. Hence, the combination of geocell and geogrid was recommended to stabilize the embankment base. The reported embankment is located in Lanjigharh (Orissa) in India. Construction of the embankment on the geocell foundation has already been completed. The constructed embankmenthas already sustained two monsoon rains without any cracks and seepage. (C) 2013 Elsevier Ltd. All rights reserved.
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A implantação de práticas de gestão ambiental nos canteiros de obras se tornou de fundamental importância para o setor da construção civil. Nas obras de edificação que visam obter a certificação LEED, são implementadas práticas que buscam a minimização e o reaproveitamento dos resíduos de construção civil, representando uma possibilidade de redução dos impactos ambientais produzidos pelo setor. Este trabalho apresenta um estudo comparativo sobre a geração de resíduos de quatro obras de edificações no município do Rio de Janeiro, sendo que duas delas implantaram práticas para obtenção da certificação LEED. Complementarmente, foi realizada uma pesquisa através de questionário com profissionais da construção civil buscando identificar a sua percepção sobre construções sustentáveis e gerenciamento de resíduos sólidos. Desconsiderando o solo de escavação, o entulho foi o resíduo mais gerado em todas as quatro obras, seguido pela sucata metálica, resíduos não recicláveis e madeira. A obra com certificação LEED apresentou o menor índice total de resíduos, 119,23 kg/m2, sendo este valor próximo às médias de países desenvolvidos.
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O presente estudo sobre a responsabilidade civil do médico busca dissociar as noções de erro e culpa no exercício da medicina, promovendo a valorização da culpa como requisito para a verificação do dever de indenizar do médico, no paradigma das profissões liberais. Analisar-se-ão, primeiramente, as categorias tradicionais da responsabilidade civil do médico (tais como responsabilidade subjetiva, responsabilidade contratual e aquiliana, obrigações de meio e de resultado etc.), bem como os instrumentos de direito do consumidor que têm sido aplicados à disciplina jurídica da atividade médica. Em seguida, serão abordados os riscos envolvidos na prática da medicina, bem como alguns instrumentos de tutela da dignidade do paciente, para que se possa afirmar a necessidade de uma análise procedimental da conduta médica, baseada no conceito de culpa normativa, no que concerne à responsabilidade desse profissional. Finalmente, indicar-se-ão alguns parâmetros para essa análise, baseada, sobretudo, no cumprimento de standards de conduta adequados ao estágio atual do desenvolvimento científico, bem como na construção de uma relação dialética entre médico e paciente, baseada na confiança. Ao final, buscar-se-á identificar se o erro médico pode ser considerado (e em que medida pode ser considerado) legítimo, não ensejando reparação civil.
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O presente estudo tem por objetivo analisar a contribuição dos conflitos para a evolução do Direito e das formas de solucioná-lo. Tem por finalidade estudar o desenvolvimento da jurisdição e do processo nos conhecidos Estado Liberal, Estado Social e Estado Constitucional. O estudo oferece ênfase à incidência do constitucionalismo sobre o direito, em especial ao Direito Processual. O processo justo e suas garantias, extraídas da Constituição Federal, transformaram o processo em instrumento de concretização das normas constitucionais. A crescente litigiosidade e dependência dos cidadãos relativamente a decisão adjudicada impõem uma necessária reformulação da cultura processual. Neste ponto, o empoderamento ganha destaque como meio de fomentar a utilização de meios consensuais para solução de conflitos. Tais meios são observados como complemento e instrumentos para o afastamento da crise de efetividade experimentado pela jurisdição. A introdução, no processo, de meios consensuais de solução de conflitos, como a mediação judicial, pretende fomentar o desenvolvimento do modelo cooperativo de processo. Consequentemente, a maior participação das partes no processo de construção da solução a ser aplicada ao conflito que as envolve, contribui para a maior efetividade da prestação jurisdicional. Examina-se, cautelosamente, a introdução dos meios consensuais de solução de conflitos no processo judicial de modo que as características essenciais de cada um não sejam perdidas ou transformadas, sob pena de desvirtuar-se a mediação judicial. É preciso assegurar a compatibilidade entre ambos, bem como a aplicação das garantias fundamentais do processo.
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O gerenciamento do tempo nos projetos de construção civil usualmente utiliza algoritmos determinísticos para o cálculo dos prazos de finalização e algoritmos PERT para avaliação da probabilidade de o mesmo terminar até uma determinada data. Os resultados calculados pelos algoritmos tradicionais possuem defasagens nos prazos se comparados aos encontrados na realidade o que vem fazendo com que a simulação venha se tornando uma ferramenta cada vez mais utilizada no gerenciamento de projetos. O objetivo da dissertação é estudar o problema dos prazos de finalização dos projetos desenvolvendo novas técnicas de cálculo que reflitam melhor os prazos encontrados na vida real. A partir disso é criada uma ferramenta prática de gerenciamento do tempo de atividades de projetos de construção enxuta baseada em planilha eletrônica onde serão utilizadas técnicas de simulação a eventos discretos, com base em distribuições de probabilidade como, por exemplo, a distribuição beta.