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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
11 L
OCALISED
V
ENTILATION
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 162
6
IEQ
6.4
V
ENTILATION
I
EQ
11 L
OCALISED
V
ENTILATION
E
XCLUSIONS
Item b) is excluded for residential buildings.
O
BJECTIVE
Prevent exposure of building occupants to concentrated indoor sources
of pollutants.
C
REDITS ATTAINABLE
2
P
REREQUISITES
Compliance with CAP 123J Building (Ventilating Systems) Regulations.
C
REDIT REQUIREMENT
a) Source control
1 credit for the provision of an adequate ventilation system for
rooms/areas where significant indoor pollution sources are generated.
b) Local exhaust
1 credit for the provision of a general exhaust system for future tenants.
A
SSESSMENT
a) Source control
The Client shall provide evidence in form of a report prepared by a
suitably qualified person detailing the design criteria that have been
adopted and details of the ventilation system designs providing local
exhaust where concentrated pollutant sources are likely to be present.
The report shall provide details of tests and the results demonstrating
that the design performance is achieved. Where the design ventilation
rate specified is lower than that specified in a recognised international or
national standard the client shall demonstrate through appropriate testing
that there is 99% isolation between areas with concentrated pollutant
sources and occupied areas.
b) General exhaust system
The report shall provide technical details to demonstrate how the
ventilation system design(s) may be temporarily adapted so that air from
any areas undergoing fit out or renovation can be exhausted to the
outside without re-circulation or entrainment to occupied areas. The
ventilation provisions shall be adequate to exhaust to outside air any
material off-gassing, combustion products, excess moisture, etc., and the
exhaust is discharged such that it does not re-enter the premises or
enter adjacent premises under typical wind conditions. Compliance may
be demonstrated by conducting appropriate tests in a sample of units.
Where it can be demonstrated that source control measures can meet
the performance requirements the credit(s) shall be awarded.
B
ACKGROUND
Concentrated pollution sources are best managed at source. The
provision of localised ventilation, segregated from the general ventilation,
is an appropriate strategy. In commercial and similar premises sources
such as photocopying equipment, smoking lounges, etc. should be
provided with dedicated exhaust systems. It is also appropriate to
provide a system that allows for localised exhaust of premises during fit-
out and redecoration, to avoid entrainment to occupied areas. It could be
part of the fixed ventilation system, or a simple approach that allows
temporary exhaust provisions. In other buildings local exhaust is
intended to remove contaminants from specific rooms such as kitchens,
in which concentrated sources are expected.