| Description: |
To investigate Indoor Climate and Air Quality Healthy buildings are characterised by dry structures, low-emission materials, satisfactorily operating ventilation systems, suitable levels of temperature and relative humidity, low noise levels and good lighting. One or more of these quantities may need to be measured when quantitatively describing the indoor environment, e.g. when attempting to provide good indoor conditions or when determining the cause of poor conditions. Making quantitative measurements of the indoor environment is often time-consuming and expensive. It is therefore advisable to start by deciding whether the measurements will provide any new information of value for the investigation. Many indoor environmental parameters vary from place to place in the building and from one time to another. This must be borne in mind when planning the measurements, details must be noted when making the measurements and allowance made for the variations when evaluating the results. This report suggests ways of determining priorities when investigating buildings suffering from indoor environment problems. When performing an investigation, it is important to establish a general picture of the circumstances before starting specific physical measurements. Most of the report is devoted to working methods in the areas ventilation, moisture, air quality, chemical emissions, microorganisms, thermal comfort, noise and light. The report can be read with advantage with Nordic Ventilation Group report "Indoor Climate Problems. Investigation and remedial measures" Nordtest Technical Report 204, in which guidance is given for measurement of a large number of quantities. |