Table 2.
Factors that affect human comfort in buildings.
| Factors | Mean | Rank |
|---|---|---|
| Ventilation | ||
| Air intake sited away from source of contamination | 1.67 | 36 |
| Positioning of building with the wind direction towards source(s) of pollution | 2.56 | 3 |
| The use of air filters for the cooling system fitted correctly | 1.99 | 24 |
| Adequacy of windows(s) for ventilation of occupants | 1.82 | 27 |
| The arrangement of furniture׳s prevents blockage of air cooling system | 2.50 | 4 |
| Provision of inlet and extract vents in the rooms | 2.37 | 5 |
| Enduring satisfactory air circulation by air conditioning units | 2.00 | 20 |
| Humidity | ||
| Relative humidity maintained between 40% and 60% | 1.94 | 25 |
| Provision of electricity within the building all the time | 2.20 | 10 |
| Lighting | ||
| The use of specific luminaires to alleviate screen glare on visual display units (VDUs) | 2.30 | 6 |
| The use of task light lighting (table light) to illuminate the room | 2.50 | 5 |
| Ensuring regular planned maintenance system is in operation | 2.10 | 16 |
| Ceiling and walls regularly decorated | 2.10 | 16 |
| Lighting system regularly maintained | 1.80 | 28 |
| Cleaning | ||
| The building fabrics are regularly cleaned including exterior windows | 1.70 | 31 |
| internal surfaces such as carpets, floors and furniture are regularly cleaned | 1.70 | 31 |
| Regularly damp dusting on all hard surfaces | 1.70 | 31 |
| Cleaning fluids and chemicals used correctly to manufacturers’ specification | 2.10 | 16 |
| Regular cleaning of the vents | 2.00 | 22 |
| Regular cleaning of the luminaires | 1.80 | 28 |
| Ventilation ducts inspected and cleaned as necessary | 2.20 | 10 |
| Filing cabinets regularly vacuumed | 2.20 | 10 |
| Use of building | ||
| The original occupancy level is achieved | 1.90 | 26 |
| Ensuring non-pasting of posters or any other item on the walls | 1.70 | 31 |
| The use of bin regularly maintained | 1.80 | 28 |
| Building management | ||
| Computerized building management systems are in place | 2.20 | 10 |
| The remote systems are avoided | 2.30 | 6 |
| The complaints procedures available to occupants when working in the environment is unsatisfactory | 2.30 | 8 |
| Glare (excess) light is avoided in office space | 2.20 | 10 |
| Provision of windows shades for natural ventilation are available | 3.00 | 1 |
| Obtaining natural day lighting for occupant comfort | 2.00 | 20 |
| Contaminants | ||
| Regular refurbishment as part of maintenance | 2.00 | 20 |
| Placement of photocopies and printers in sealed rooms with their own extract system | 2.30 | 6 |
| Consultation with occupants on furnishings. | 2.60 | 2 |