Traditional tools found in occupational risk assessments are a preliminary hazard analysis and checklists, both based on the isolation of a particular activity from the entire process and created for application in specific environments of manufacture. This strategy makes the results of such evaluations distant from real situations. Construction is a complex endeavor and can involve multiple contractors and groups working under each contractor. Work occurs under constant change and varying demands. In this context, as workers move through their daily journey, their health and safety are often are threatened by activities carried out by other contractors or groups. The study utilizes the Functional Resonance Analysis Method (FRAM), which aims to describe how function couplings may be combined in such a way that variability of performance, rather than failure or poor functioning, creates an occupational risk. The study also contributes to the evolution of FRAM, by proposing the application of the analytic hierarchy process, to investigate the relative importance of the criteria and alternatives for the identification of phenotypes of performance variability, as well as the aggregation of variability.
Relative concepts of sustainability are more and more influenced by societies around the world. The construction industry, especially for building construction development, is being accused of promoting environmental impacts that range from excess use of resources to pollution generation. This paper present an application of the sustainability concept applied to buildings, as well as, a contribution to the development of practices, methodology and tools for evaluation of already existing buildings. In order to achieve that, this study will detail how current systems to evaluate building performance operate, and how can we improve them. The Analytic Hierarchy Process (AHP), a multi-criteria method, is used as a tool to investigate the relative importance of the criteria, sub-criteria and families of indicators established by the researcher and interested parties, and adjust the proposed system to the local culture. AHP usage allowed a deeper insight into the problem.
Sustainable construction is a complex endeavour, involving various stakeholders and resulting in situations that are incompletely described or underspecified. Traditional risk assessment methods require a detailed description of the system and safety, focusing on undesirable outcomes, losses, incidents and accidents. Developing this principle, this research describes a new way to deal with risk assessment in the green construction industry using a resilience engineering method based on the functional resonance analysis method and analytic hierarchy process methodologies. The functional resonance analysis method defines a systemic framework to model complex systems based on combinations of function variabilities during normal work. Therefore, to quantify the outcomes for risk assessment, this method was used together with the analytic hierarchy process in a case study during the modernisation work on the Maracanã stadium in Rio de Janeiro. The results of this case study demonstrate that the combined utilisation of the functional resonance analysis method and analytic hierarchy process can be utilised to recognise situations where developments could potentially be without control, which enables this to be used as a basis for performing indicators or a monitoring system. Furthermore, this combined technique can be used to assess and quantify the performance variabilities that may lead to occupational or environmental accidents, and provide new recommendations about how work processes should function, minimising production losses, incidents and accidents.
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