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BEAM P
LUS FOR
E
XISTING
B
UILDINGS
I
NDOOR
E
NVIRONMENTAL
Q
UALITY
(I
EQ
)
V
ERSION
1.2
I
EQ
11 B
ACKGROUND
V
ENTILATION
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 127
For domestic buildings the Building Authority (BA) advises the following
performance criteria for the provision of natural ventilation in habitable
rooms [4]:
Room of domestic
building
Air Change per Hour (ACH)
Habitable Room
1.5 (natural means)
Kitchen
1.5 (natural means) plus 5 (mechanical
means)
4
Buildings Department. Practice Note for Authorized Persons, Registered Structural Engineers and Registered
Geotechnical Engineers, PNAP No. APP-130 Lighting and Ventilation Requirements – Performance-based Approach.
http://www.bd.gov.hk/english/documents/pnap/APP/APP130.pdf