Environmental Engineering Reference
In-Depth Information
Table 8.3
Environmental Risk Factors for Health and Comfort Complaints in Buildings
Level of risk
Factor
Low
Medium
High
Effects
Ventilation system
Natural exhaust,
well-working
supply system
Supply with heating
or cooling
Humidification, badly
monitored
SBS, allergy
Size of room; number of workplaces/room
<3
3-7
>7
General symptoms
Office machinery & processes
In separate room
Several in same room
SBS
Cleaning program
Thorough (daily)
(3-4/week)
Suitable
Unsuitable, superficial
(<2/week)
SBS, allergy
Cleaning, tidiness, accessibility
Good
Average
Poor
SBS, allergy
Floor coverings
Medium hard
Carpet
Carpet >10 yrs service
SBS, allergy
Fleece factor, m
/m
<0.35
0.35-0.70
>0.70
SBS, allergy
2
3
Shelf factor, m/m
2
<0.2
0.2-0.5
>0.5
SBS, allergy
Odor assessment, decipols
<0.8
0.8-1.5
>1.5
Bad air
Moisture damage
None
Minor, short duration
Major, long duration
SBS
Source:
From Kukkonen, E. et al.,
Nordtest Report NT Technical Report 204,
Helsinki, 1993.
