This report describes the development of a standard questionnaire for use in investigating sick building syndrome (SBS) in specific cases and in research projects. The questionnaire itself is packaged with the report. It is intended to be used for screening surveys to determine the prevalence of SBS in a particular building. It may be necessary to adapt the questionnaire if it is going to be used for a specific research project or to gather data on particular potential causes of SBS. The focus has been on achieving standardisation within the United Kingdom.

A major increase of complaints has been observed by the occupants of buildings, concerning health symptoms and comfort. In this study, the occupants' experience of symptoms as well as the occupants' sensation of the environmental parameters were estimated in six office buildings, where the indoor air quality was investigated. It was found that the percentage of building related symptoms experienced by the occupants of the buildings was high and it was strongly related to human comfort and human sensation concerning the environmental conditions.

The concept of ventilation effectiveness for mechanical ventilation of an airspace is reviewed and associated parameters for describing the performance of ventilation systems are described. The idea is applied to a study of the thermal environment in the waiting hall of a railway station. Two ventilation schemes: one with a ventilation system only and the other with an air-conditioning system were considered. The proposed air-conditioning system would provide air at a temperature only 5 °C below the ambient but with a higher air circulation rate.

 The exposure of workers in the near-wake region due to a recirculating airflow was studied experimentally and numerically. A mannequin was installed in an open-ended tunnel and tracer gas was released at several locations downstream to determine the size and location of the reverse flow region. The contaminant transport into the breathing zone was found to depend strongly on the location of the release point. The airflow field was also determined numerically assuming a steady 6ow and using the standard k-£ turbulence model.

Within the European project Joule II - Indoor Air Quality Audit, 56 office buildings were audited during the winter season 1993-1994 in Europe. The purpose of the audit is to harvest information on ventilation and indoor air quality in relation with occupant health and energy consumption in office buildings. The audit concerns the building itself and its technical equipment, indoor air quality and the opinion of the occupants on the comfort and health condition.

This study, in progress in Trondheim, Norway, deals with the connection between energy economy and indoor air quality in detached houses. It includes 41 new houses, all equipped with balanced ventilation and heat-pump for energy savings. The study includes both questionnaires and various measurements, and will be finished in 1994. Comparing the new and old housing, 90 % of the occupants are more satisfied with the indoor air quality in their new home, than their old home.

Sources of indoor air pollutants in residential and office environments can be managed to reduce occupant exposures. Techniques for managing indoor air pollution sources include: source elimination, substitution, modification, pretreatment, and altering the amount, location, or time of use. Intelligent source management requires knowledge of the source's emission characteristics, including chemical composition, emission rates, and decay rates.

Poor indoor air quality caused by poor ventilation was indicated from field measurements in apartments in Taiwan. Four strategies of employing thermal buoyancy effect, dedicated air flow pattern, transom and spatial connection control are proposed to improve indoor air quality by removing indoor pollutants with outdoor air. To prove the concepts, a bathroom design based on the proposed strategies is presented by numerical simulation using 11 computational fluid dynamics code.