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Advisor(s)
Abstract(s)
O setor da construção civil é conhecido pelo desperdício e pela sua característica baixa produtividade, principalmente quando comparado com outras indústrias. Conhecida pelos típicos atrasos na entrega das obras, é dos setores mais tradicionais da atividade económica e também por natureza, um dos mais resistentes à mudança. Este trabalho tem como objetivo avaliar o impacto das ferramentas lean, não só no aumento da produtividade e na redução do desperdício, como é mais habitual, mas também na segurança dos trabalhadores. Através da revisão bibliográfica foi possível concluir que existem já vários estudos decorrentes da implementação de várias ferramentas lean em contexto de obra, sendo que grande maioria dos estudos revistos documentam melhorias por vezes significativas. Algumas das ferramentas lean mais citadas no âmbito da construção, são o 5S, o VM e o LPS. Este caso de estudo consistiu na implementação do Last Planner System numa organização cuja principal atividade é a instalação de sistemas AVAC em obras de construção civil. A primeira fase deste estudo consistiu na implementação da ferramenta sendo que posteriormente foram avaliados os ganhos em termos de produtividade, através da análise dos PPC, e melhorias sentidas em termos de segurança e bem-estar por parte trabalhadores, através de um inquérito distribuído pelos mesmos no final do estudo. A análise do Percent Plan Complete revelou um aumento do PPC em cerca de 27,5% entre as três primeiras e últimas semanas decorrentes do estudo. Foi também unanime entre os envolvidos, que a implementação do LPS permitiu o ganho de tempo útil em obra bem como a identificação das principais causas do não cumprimento das tarefas planeadas. A análise do inquérito, tendo como base a resposta dos inquiridos em função da escala de Likert, revelou melhorias ao nível da redução do seu esforço físico, segurança na realização do seu trabalho e diminuição do stress.
The construction sector is known for its high level of waste and low productivity, especially when compared to other industries. Known for the typical delays in the delivery of works, it is one of the most traditional sectors of economic activity and also by nature one of the most resistant to change. This study aims to evaluate the impact of lean tools in the construction sector, not only in increasing productivity and waste reduction, as is it more common, but also the benefits in the health and well-being of the workers. Through the literature review, it was possible to conclude that there are already several studies resulting from the implementation of several lean tools in the context of the construction sector. The vast majority of the reviewed studies document improvements, sometimes significant. Some of the most cited lean tools in the construction field are 5S, VM and LPS. This case study consists in the implementation of the Last Planner System in an organization whose main activity is the installation of HVAC systems in civil construction works. The first phase of this study consisted of the implementation of the tool, after which the gains in terms of productivity were evaluated, through the analysis of PPC, and improvements felt in terms of safety and well-being by workers, through a survey distributed by them at the end of the study. The PPC analysis revealed an increase in PPC of about 27.5% between the first and last three weeks of this study. It was also unanimous among those involved that the implementation of the LPS allowed for the gain of useful time on site as well as the identification of the main causes of non-compliance with the planned tasks. The analysis of the survey, based on the response according to the Likert scale, revealed improvements in terms of reducing their physical effort, safety in carrying out their work and reducing stress.
The construction sector is known for its high level of waste and low productivity, especially when compared to other industries. Known for the typical delays in the delivery of works, it is one of the most traditional sectors of economic activity and also by nature one of the most resistant to change. This study aims to evaluate the impact of lean tools in the construction sector, not only in increasing productivity and waste reduction, as is it more common, but also the benefits in the health and well-being of the workers. Through the literature review, it was possible to conclude that there are already several studies resulting from the implementation of several lean tools in the context of the construction sector. The vast majority of the reviewed studies document improvements, sometimes significant. Some of the most cited lean tools in the construction field are 5S, VM and LPS. This case study consists in the implementation of the Last Planner System in an organization whose main activity is the installation of HVAC systems in civil construction works. The first phase of this study consisted of the implementation of the tool, after which the gains in terms of productivity were evaluated, through the analysis of PPC, and improvements felt in terms of safety and well-being by workers, through a survey distributed by them at the end of the study. The PPC analysis revealed an increase in PPC of about 27.5% between the first and last three weeks of this study. It was also unanimous among those involved that the implementation of the LPS allowed for the gain of useful time on site as well as the identification of the main causes of non-compliance with the planned tasks. The analysis of the survey, based on the response according to the Likert scale, revealed improvements in terms of reducing their physical effort, safety in carrying out their work and reducing stress.
Description
Keywords
Filosofia Lean Lean Safety Lean Construction Lean Philosophy