Yasuhiro Yamashita

Indoor environmental study and post occupancy evaluation in an office environment

Abstract 1. 1. The objective of this paper is to investigate the indoor environment from the viewpoint of interaction between physical environment and the human responses. The field survey has been conducted over 1 year. 2. 2. A continuous measurement has been carried out for 1 week and distribution of variables have been measured for 1 day. 3. 3. The attitude of workers was investigated by a questionnaire. 4. 4. As the result, average luminance represented more than 1000 lx in the new building, in contrast with less tha 300 lx in the existing building. 5. 5. There was a significant difference of the occupants response to the light environment between the two buildings. 6. 6. Measured thermal conditions are on the edge of the ASHRAE comfort envelope in summer, and in the neighborhood of the lower dry limit of the envelope in spring. 7. 7. The occupants evaluations were remarkably changed before and after the moving. The office environment is better than that of the factory.