Discusses the future prospects of domestic ventilation and whether mechanical ventilation will be necessary to satisfy requirements as windows become more airtight. Suggests use of centralized mechanical ventilation, with openable windows for summer ventilation.

Reports on project designed to illustrate building and ventilation solutions which are or which can be expected to reduce the radon daughter content in indoor air in existing buildings or to prevent excessive radon daughter contents in newly-

A representative sample of over 2,000 UK dwellings was monitored for a year using thermoluminescent and etchable plastic dosemeters to measure gamma ray dose rates and radon concentrations. 

Models have been developed to enable prediction to be made of the dose incurred indoors from gamma radiation and from inhalation of radon decay products. 

The National Radiological Protection Board has undertaken a large scale environmental survey of radiation levels in homes throughout the United Kingdom. Passive radon and gamma ray dosemeters were posted to a representative sample of households. Lithium fluoride thermoluminescence dosemeters were used to assess natural gamma radiation and were left in the measurement location for a period of six months before being returned to the Board for processing. As a preliminary to the national survey, several limited surveys were undertaken in regions of igneous and sedimentary geology.

Contains references and abstracts on laboratory techniques for analyzing formaldehyde, methodologies for identifying and characterizing a wide variety of organic contaminants and selected field studies of organic contaminants inindoor air.

Discusses the sources and concentrations of organic compounds in indoor environments. Describes work done by the Lawrence Berkeley Laboratory in the USA on formaldehyde and poor air quality in offices.

Describes a project for the design, construction and evaluation of a mechanical ventilation system of small dimensions, easy installation and extreme simplicity.

Infiltration heat loss has become more important in the energy loss of modern buildings. It depends on a variety of factors. Computer analysis points to the effect of storey number, ground plan features and exhaust ventilation systems. Different rooms exhibit infiltration heat loss maxima at different outdoor temperatures.

Summarizes a study reviewing indoor air pollution in housing in Canada. Concludes that 1, many materials and conditions which contribute significantly to indoor air pollution are known to be present in Canadian houses, 2,individual susceptibility to air pollution varies, 3, smoking remains a major source of pollution, 4, some energy conservation measures aggravate indoor pollution problems, 5, the full health, social and economic costs have yet tobe determined, and 6, acceptable levels of effects on health have not been defined.