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
Air temperature, °C
21-23
21-22
<20
Draft, cold, hot,
dryness,
SBS
23-24
>24
>26 (summer)
Daily temperature rise, °C
<2
2-3
>3
Dryness, SBS
Air velocity, m/s
<0.15
0.15-0.20
>0.20
Drafts
Noise, dBA
Average
<60
60-65
>65
Noise complaints
Background
<35
35-40
>40
General symptoms
Low frequency noise, dB
<20
20-25
>25
General symptoms
Lighting
General
Suitable
Suitable
Poor
General symptoms,
eye complaints
Individual
Yes
No
No
Glare
No
Control
Glare
General symptoms,
eye complaints
