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BEAM P
LUS FOR
N
EW
B
UILDINGS
V
ERSION
1.2
F
RAMEWORK
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 25
I
EQ
13 T
HERMAL
C
OMFORT IN
A
IR
-
CONDITIONED
P
REMISES
1 credit for sustaining the air temperature at the design value within ±1.5
C when
the air side system is operating at steady state under normal occupied periods.
Premises where air-
conditioning is provided
by window units or split
units.
1
1 credit where room air diffusers satisfy the Air Diffusion Performance Index.
1
I
EQ
14 T
HERMAL
C
OMFORT IN
N
ATURALLY
V
ENTILATED
P
REMISES
1 credit for demonstrating indoor operative temperatures in occupied/habitable
rooms meet the 80% acceptability limits.
Buildings that are not
designed to utilise
natural ventilation.
1
Alternatively,
1 credit for demonstrating the predicted Mean Vote (PMV) in occupied/habitable
rooms is between –1 and +1.
Alternatively,
1 credit for demonstrating that, the thermal performance, and the internal wind
speeds, of the occupied/habitable rooms fall within the 80% acceptability range
for the tropical climate conditions of Hong Kong.
1
1 credit for sustaining the air temperature at the design value within ±1.5
℃
when
the air-conditioning unit is operating at steady state under normal occupied
periods.
I
EQ
15 N
ATURAL
L
IGHTING
1 credit where at least 80% of the floor area in all normally occupied spaces is
adequately lit with an average daylight factor of 1%.
None.
1
2 credits where at least 95% of the floor area in all normally occupied spaces is
adequately lit with an average daylight factor of 1%.
1
I
EQ
16
I NTERIOR L IGHTING IN N ORMALLY O CCUPIED A REAS1 credit where the prescribed lighting performance in each type of premises in
respect of illuminance and lighting quality is achieved.
It is required to fulfill (i) prescribed lighting performance in respect of maintained
illuminance and illumance variation; and (ii) the limiting unified glare rating is
achieved and light sources have an appropriate colour rendering index.
Residential buildings,
hotels and apartment
buildings.
1
1 BONUS credit for providing automatic control of artificial lighting such as
daylight sensors at perimeter zone and/or occupancy sensor.
1B
I
EQ
17
I NTERIOR L IGHTING IN A REAS NOT N ORMALLY O CCUPIED 1credit where the prescribed lighting performance in each type of common or
service space in respect of light output and lighting quality is achieved.
None.
1
I
EQ
18 R
OOM
A
COUSTICS
1 credit for demonstrating that intruding noise levels are within the prescribed
criteria and the mid-frequency reverberation time in applicable rooms meets the
prescribed criteria for give types of premises.
Buildings/premises
where speech
intelligibility is not
important, and rooms of
1