Abstract
The risks of falling at construction sites are primarily caused by a lack of physical stabilities of the workers. In order to ensure their safety and develop better safety guidelines, this study evaluated the various aspects of high-risk activities involved with scaffolding steps by measuring not SD (semantic differential value) but three physical quantities; latitude between minimum and maximum absolute acceleration value, fractal dimension, vacillate value lead from small, wearable and three-dimensional accelerometers.The findings are as follows:1) Avoid rushing up and down the stairs.2) Take an extra precaution right before entering the stairs.3) Make the height between each step as small as possible.Furthermore, the evaluation method based on the three physical quantities proposed above seems useful in terms of ensuring safety at construction sites.
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