“…They examined a vibration waveform with dominant frequency components in the range of 5-16 Hz. Takahashi et al, 15 using pedestrian bridges and long span floors with a natural frequency of 10 Hz or lower, showed that the converted acceleration obtained from the mean of the maximum vibration levels and the level of perception correspond to each other well. Takahashi et al obtained sensorily equivalent vibrations for 16 types of vibration with different standard sine waves, natural frequencies, and attenuation constants (natural frequencies of 5, 10, 15, and 20 Hz) on a shake table and showed that the vibration level and converted acceleration are both effective.…”