抄録
Indicating methods of floor vibrations caused by human activities were determined to establish evaluating methods from a viewpoint of comfort. The indicating methods were based on the relationship between sensory scales made up by sensory tests and physical characteristics measured with "Vibration Tester". The sensory tests were carried out by using a sample floor with a mechanical vibrator. The number of subject was 15. The sensory scales in 3 motions, standing, sitting down on the chair and sitting down on the floor, were obtained by the method of successive categories. The physical characteristics of the sample floors were measured with "Vibration Tester" developed by the authors. This tester consisted of a weight, a rubber spring, a displacement meter, an acceleration meter, and so on. The human body characteristics as elements to increase the damping of floor vibrations, were taken into account by this tester. Finally, the appropriate physical values to indicate the vibration greatness of human sensations, were obtained. This physical values "Vibration Index (2)" were composed of 3 elements of the floor vibrations, maximum displacement, velocity and damping time till 20 Db (VAL). As the results of this study, the indicating methods of floor vibrations based on human sensations, were determined with "Vibration Tester" and the physical values "VI (2)".
