抄録
The purpose of this research is to know the present status of the indoor air chemical pollution by formaldehyde in government buildings in 2001. Measurements of formaldehyde concentration and questionnaire survey on the usage of office rooms were carried out in around 300 buildings, and the following results were obtained. 1) The affects by the factors on the usage of the rooms and buildings are bigger than those on the size of rooms and buildings. 2) The relation between the built era of the buildings and number of stories was confirmed to some degree.