Features of the five buildings used in the study
| Building | |||||
|---|---|---|---|---|---|
| A | B | C | D | E | |
| Age (y) | 10 | 4 | 2 | 18 | 20 |
| Population | 1200 | 600 | 250 | 600 | 500 |
| Male (%) | 60 | 50 | 50 | 60 | 40 |
| Clerical (%) | 80 | 60 | 50 | 80 | 60 |
| Professional (%) | 10 | 30 | 40 | 5 | 20 |
| Heating | Yes | Yes | Yes | Yes | Yes |
| Cooling | Wet tower | Wet tower | Wet tower | No | Yes |
| Humidification | Yes | No | Yes | No | No |
| Enthalpy controller | Yes | Yes | No | NA | No |
| Air supply | Linear slot perimeter | Wall mounted floor extract | Ceiling constant volume | Natural | Wall mounted: central extract |
| Windows | Non-openable integral blinds | Openable blinds | Non-openable blinds | Openable | Non-openable blinds |
| Lighting | Flush ceiling | No ceiling | Flush ceiling | Flush ceiling | Suspended low frequency |
| Diffusers | Yes | NA | Yes | Yes | Yes |
| Uplighting | None | 100% | None | None | None |
| VDU use (%) | >80 | 40–50 | 60 | 90 | 80–90 |
| Smoking policy | No smoking | No smoking | Permitted | Restricted | No smoking |
NA=not appropriate; lighting=high frequency unless stated; smoking policy=no smoking (complete smoking restriction from ventilated areas); permitted=allowed at discretion of local occupants consent; restricted=restricted areas.