Safety Risk Management effective on Occupational Health in High-rise Building construction projects with Fuzzy approach

Today, due to the increasing of urban population and hence land shortage, construction of tall buildings are rising. The potential risks of such projects arecomparatively more than the conventional construction as the construction industry is reliant on manpower. Therefore attention to the health and safety of persons engaged in construction projects is essential.The purpose of this research was to identify, evaluate and rank the safety risks that may have harmful effects on human health in high rise building projects. In this research safety risks in high-rise buildings were identified with thru available checklist and interview with experts,and in the next level they wereassessed using 35 expert opinions.Then for quantitative analysis Fuzzy Logic Technique with Trapezoidal Distribution were used and data were also analyzed for uncertainty.After risk evaluation,the degree of critical level of each risk was calculated and for treatment the calculated risks were ranked. Following the assessment, the risk of working at heights in high-rise construction projects, with 89% risk factor and 96% degree of criticalwas identified as the most critical risk.By comparing theresults of risk groups, working at heights, scaffolding, excavation andworking with electricity were rankedas the most critical risk groups, respectively. Occupational risks in High-rise Building projects are very important andmany of them maylead to Short-term or long-term effects on human health.Also these risks influence directly and indirectly on time, quality and cost of projects. Therefore, it is necessary to control and reduce such risks in design and implementation steps.