This paper investigates an empirical prediction method of construction vibrations for frequency characteristics of vertical and two horizontal components, using a phase velocity and a damping factor in a subsurface layer. Observed Fourier spectra in a frequency of 1 to 100 Hz are well reproduced by the method using the estimated damping factor from observation data of multichannel analysis of surface waves. In addition, an evaluation formula is proposed to evaluate accuracy for the frequency characteristics of predicted Fourier spectra.

In the architectural field in Japan, there are currently no standards and criteria for the appropriate evaluation of combined vibrations that are perceived simultaneously as vertical and horizontal vibrations. In this paper, combined vibration evaluation method was studied using real houses in which vibration is perceived on a daily life. Specifically, combined vibration correction coefficients with continuity for perception scale of vibration was studied. As a result, combined vibration evaluation method using the combined vibration correction coefficients with continuity was proposed. In addition, calculation chart was proposed to simplify the calculation of the combined vibration evaluation method.

This study aims to reproduce the spatial brightness brought about by the light environment at the planning stage of a building. Firstly, we developed to create images that reproduce luminance and chromaticity based on measured luminance data. Secondly, through comparing subjects’ spatial brightness evaluation between the real space and the images presented to five spaces with different sizes, daylight, and lighting conditions. The results showed that the spatial brightness of the real space and images presented on the large screen display statistically matched with respect to the average luminance, confirming the reproducibility of spatial brightness on the large display.

Through a questionnaire survey and field measurement, the actual conditions of home dryness and its health effects during the winter were revealed. Also we presented a causal structure model for perception of dryness and indoor environmental factors. As results, it is suggested that not only the low humidity environment directly affects the feeling of dryness and relevant health symptoms, but also perception of the indoor environment such as the perception of odor, the generation of static electricity, the occupants characteristics and so on.

To provide employees with thermal satisfaction and improve workplace productivity, actual operation verification was studied during a cooling period in an office room temperature fluctuation control takes into account aspects of human circadian rhythm. The following findings were obtained in this paper.

Responses moved to the neutral side by setting the room temperature 1K lower than the standard during morning hours and after lunch.

It was believed fluctuation room temperature control would create a thermal environment in which work could be done more efficiently.

Room temperature fluctuation control was able to reduce air conditioning power and overtime lighting power consumption.