Abstract:
The objective of this research is to study the severity levels and the factors influencing the fall from high elevation in high-rise building construction projects. The research methodologies for study severity levels of the fall from high elevation consist of the developing the list of severity levels of injury due to fall from high elevation, analysis of relationship between the height of falling and severity levels of injury, and estimating the quantitative severity levels of the fall from high elevation by using historical data of accident in construction sites and the opinion of 17 persons who have experience of fall from hieght accident. And then, the factors and importance levels of factors influencing the fall from high elevation were studied and analyzed by using Analytic Hierarchy Process (AHP) and opinion of 9 professional safety engineers. The results of this research show that the severity levels of the fall from high elevation were classified into 5 levels such as temporary disability less than 3 days equivalent to a loss of 3 working-days, temporary disability more than 3 days equivalent to a loss of 400 working-days, permanent partial disability equivalent to a loss of 4,033 working-days, permanent total disability equivalent to a loss of 6,000 working-days and the death equivalent to a loss of 6,000 working-days. The main factors influencing the fall from high elevation are amount of fall protection, the quality of the fall protection installation and type of fall protection. The secondary factors are the density of workers (numbers of worker per working area) and the amount of opening space (hazard). The result of this research clearly showed the importance of the protection of the fall from high elevation following safety regulations.