125 / 248
BEAM P
LUS FOR
N
EW
B
UILDINGS
E
NERGY
U
SE
(E
U
)
V
ERSION
1.2
E
U
5 L
IGHTING
S
YSTEM IN
C
AR
P
ARKS
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 104
4
E
NERGY
U
SE
4.2
E
NERGY
E
FFICIENT
S
YSTEMS
E
U
5 L
IGHTING
S
YSTEM IN
C
AR
P
ARKS
E
XCLUSIONS
Buildings without carpark or carpark area less than 10% CFA.
O
BJECTIVE
Encourage the adoption of lighting equipment and controls that will
provide for energy conservation.
C
REDITS ATTAINABLE
2
P
REREQUISITES
None.
C
REDIT REQUIREMENT
1 credit for using lamps and, where applicable, ballasts that will consume
less electricity than those meeting the zero-credit requirements by 20%
or more.
2 credits where the consumption is reduced by 25% or more.
A
SSESSMENT
The zero credit performance criteria for the interior lighting installations
(not including that in public areas in and adjacent to the assessed
building) shall be determined based on the following:
The use of 40W fluorescent tubes, each with a 10W control gear and
producing 2,400 lm; and
The use of the minimum number of lighting fittings with lamps of
performance as given above that will allow the required illumination
levels in various premises in the building to be achieved.
The illumination levels required in various types of premises in the
assessed building shall follow guidance given in relevant lighting design
guides, such as the CIBSE Code for interior lighting [1]. Determination of
the minimum number of lighting fittings required shall be based on the
Lumen formula, based on a utilisation factor (UF) of 0.45 and a light loss
factor (LLF) of 0.8.
The Client shall submit the following information to demonstrate that the
installations will meet the basic requirements and the individual
requirements above for the related credits:
the criteria adopted in the design of the lighting systems;
If daylight harvesting is adopted, proof must be provided to show
associated energy reductions. Recommended car park design lux
levels must be maintained in the car park under a 10,000 lux
overcast sky condition[2];
the quantity of lighting fittings designed for various premises, the
wattage of each fitting and the operation patterns of the lighting
systems; and
the energy use predictions for the zero-credit case and the as
designed case for the lighting installations.
In addition to the above requirement, the Client is also required to
demonstrate that control systems and devices have been provided to
switch off or dim the output of lighting installations when and where
illumination is not required.
Where there is a need to take into account trade-off of performance
between the mechanical ventilation and the lighting installations, the
submitted calculations shall show that the extra energy used due to non-
1
The Chartered Institution of Building Services Engineers. Code for interior lighting.
2
The Institute of Structural Engineers, Design recommendations for multi-storey and underground car parks (2002), Institute
of Structural Engineers, London, U.K.