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BEAM P
LUS FOR
N
EW
B
UILDINGS
I
NDOOR
E
NVIRONMENTAL
Q
UALITY
(I
EQ
)
V
ERSION
1.2
I
EQ
7
I
NDOOR
S
OURCES OF
A
IR
P
OLLUTION
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 155
6
IEQ
6.3
I
NDOOR
A
IR
Q
UALITY
I
EQ
7 I
NDOOR
S
OURCES OF
A
IR
P
OLLUTION
E
XCLUSIONS
Items a) & b) are excluded for
buildings that are designed for natural
ventilation or using de-centralised air-conditioning system and
without
interior decoration.
O
BJECTIVE
Demonstrate that airborne contaminants, predominantly from inside
sources, do not give rise to unacceptable levels of indoor air pollution in
normally occupied spaces.
C
REDITS ATTAINABLE
3
P
REREQUISITES
None.
C
REDIT REQUIREMENT
a) Volatile organic compounds (VOCs)
1 credit for demonstrating compliance with the appropriate criteria for
VOCs.
b) Formaldehyde (HCHO)
1 credit for demonstrating compliance with the appropriate criteria for
HCHO.
c) Radon (Rn)
1 credit for demonstrating compliance with the appropriate criteria for Rn.
A
SSESSMENT
The Client shall provide a report prepared by a suitably qualified person
detailing the criteria adopted for indoor air quality for each type of
normally occupied area within the building development.
Where the Client does not offer criteria, BEAM aligns with the HKSAR
IAQ Certification Scheme [1]. The criteria for air-conditioned buildings
shall be those defined under Good Class in Table 1 of the scheme. For
other occupied areas and habitable rooms, the criteria can be that
defined in the Scheme, in ASHRAE 62.1-2007 [2] or equivalent standard.
Compliance shall be demonstrated by measurement. The report shall
identify the measurement protocol. i.e., the measuring equipment used,
duration of measurements, number and details of the sampling points,
the measurement results, and overall conclusions from the
measurements survey. The number of measurement points shall make
reference to IAQ Certification Scheme.
A sample at the lowest outdoor air intake location can help to identify the
relative contribution of VOCs from indoor and outdoor. However, the
common alpha track detector and gamma ray detector for Rn detection
are not regarded as suitable for measurement. Scintillation cells and
electronic monitors are more suitable for both grab sampling and
continuous measurements.
The objective of sampling is to ensure that the building will not suffer
unduly from outside sources of pollution. The sampling protocol (number
and locations of samples) shall follow as a minimum that given in
Appendix 8.7. Any other protocol demonstrated to be of equal rigour
appropriate to the nature of the premises surveyed would be acceptable.
In the case of occupied/habitable rooms in air-conditioned/naturally
ventilated buildings the measurement of indoor air pollutants shall take
1
Indoor Air Quality Management Group. A Guide on Indoor Air Quality Certification Scheme for Offices and Public Places.
http://www.iaq.gov.hk/cert/doc/CertGuide-eng.pdf2
American Society of Heating Refrigeration and Air Conditioning Engineers. ASHRAE Standard 62.1. Ventilation for
Acceptable Indoor Air Quality, Atlanta 2007.