Health symptoms and the work environment in four non-problem United States office buildings.

Describes a study which aimed to quantify health symptom reports in four 'non-problem' buildings. Also attempted to assess the relationship between symptoms and air quality measures, characteristics of workstations and psychosocial aspects of the workplace. The method used environmental sampling and a questionnaire. High report of symptoms contrasted with low measured contaminant levels. Symptoms were associated with occupant perception of air movement, dryness, odour, and noise.

Effectiveness of in-room air filtration and dilution ventilation for tuberculosis infection control.

The effectiveness of in-room air filtration systems was experimentally evaluated, specifically portable air filters (PAFs) and ceiling-mounted air filters, in conjunction with dilution ventilation, in order to control TB exposure in high-risk environments. A test aerosol was continuously generated and released into a full-sized room. Time-averaged airborne particle concentrations were measured at several points. The effectiveness was determined by a comparison of particle concentrations with and without device operation. Increasing rate of air flow did not always increase effectiveness.

The relative efficacy of respirators and room ventilation in preventing occupational tuberculosis.

The study described attempted to assess the relative efficacy of personal respiratory protection when infectious aerosol concentration increases or room ventilation rates decrease. A variable for respirator leakage was added to the Wells-Riley mathematical model of airborne transmission of disease. States that infection risk decreases exponentially with increasing room ventilation or personal respiratory protection. As room ventilation rates increase, or concentrations of infectious aerosols decrease, the relative efficacy of personal respiratory protection decreases.

Health, comfort and energy in buildings - an integrated approach.

The indoor environment is by far the most important environment from a health perspective. Allergies, airways infections, lung cancer etc. are associated with indoor air quality (IAQ) in developed countries and they are related to the use of energy for buildings. The main problems related to buildings, energy conservation and health in the developed world concern 'dampness' and inadequate ventilation. It is well established that if there is no 'building dampness' and if the ventilation is adequate then the risk of IAQ-related diseases is low.

Creating airtight and healthy homes.

States that with the ill effects of poor indoor air quality often in the news these days, it pays to design and build a house that is healthy from the start. States that a comprehensive approach to residential design has emerged in recent years that makes both energy conservation and good indoor air quality achievable in homes.

The threat posed by airborne micro-organisms.


A better way to renovate.

This booklet presents seven outstanding renovation projects that show a different set of renovation challenges and solutions. Together, they demonstrate how a house of any age can be turned into a healthy, comfortable and energy-efficient home.

Assessing the renovation project.