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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
16
I
NTERIOR
L
IGHTING IN
N
ORMALLY
O
CCUPIED
A
REAS
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 175
6
IEQ
6.6
L
IGHTING
Q
UALITY
I
EQ
16 I
NTERIOR
L
IGHTING IN
N
ORMALLY
O
CCUPIED
A
REAS
E
XCLUSIONS
Residential buildings, hotels and apartment buildings.
O
BJECTIVE
Ensure the adequacy and maintenance of visual comfort conditions
achieved by the electric lighting provisions in occupied spaces.
C
REDITS ATTAINABLE
1 + 1 BONUS
P
REREQUISITES
None.
C
REDIT REQUIREMENT
1 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 the following:
(i)
prescribed lighting performance in respect of maintained
illuminance and illuminance variation; and
(ii)
the limiting unified glare rating is achieved and light sources
have an appropriate colour rendering index.
1 BONUS credit for providing automatic control of artificial lighting such
as daylight sensors at perimeter zones and/or occupancy sensors.
A
SSESSMENT
The design criteria for interior lighting shall be at the discretion of the
Client but shall embrace both ‘quantity’ and ‘quality’ of the lighting
system performance including: maintained horizontal, and where
appropriate vertical, illuminance, illuminance variation, limiting glare
index, colour rendering, and modulation of light output appropriate to the
type and use of the premises/indoor spaces.
The criteria adopted shall be based on authoritative guidance, such as
that provided in CIE [1,2], CIBSE [3] and/or IESNA [4] publications, or
equivalent. As the focus is on lighting for comfort and productivity,
lighting for performing arts, display decoration, ambience. etc., will
normally be excluded from consideration.
Compliance with the assessment criteria shall be demonstrated either by
measurements using a standardised measurement protocol appropriate
to the parameter being assessed, and/or by modelling (calculation),
providing the calculation method or software used is based on a
standardised method, and uses data/assumptions appropriate to the
circumstances. Notwithstanding, demonstration of compliance with a)
requires that the maintained illuminance take into account the influence
on light output by adjacent air-conditioning or ventilation fixtures, and the
lighting maintenance plan (the period for luminaire cleaning and group
re-lamping) appropriate to the circumstances [5].
The Client shall submit a report prepared by a suitably qualified person
detailing the ‘as installed’ lighting systems or, for premises/spaces yet to
be fitted-out, the technical details of the proposed lighting systems for
each type of normally occupied space within the development. The
report shall detail the design criteria and the results of measurements or
other means of demonstrating compliance. For premises to be fitted out
by tenants compliance shall be confirmed if the technical details and
contractual arrangements with tenants in respect of lighting installations
1
Commission Internationale de l'Eclairage (CIE). Lighting of Indoor Work Places. CIE Standard S 008/E.
2
Commission Internationale de l'Eclairage (CIE). Discomfort Glare in Interior Lighting. CIE 117-1995.
3
The Chartered Institution of Building Services Engineers. Code for interior lighting. London. CIBSE.
4
Illuminating Engineering Society of North America. Lighting Handbook, Reference & Applications. 9
th
edition., New York.
5
Commission Internationale de l'Eclairage (CIE). Maintenance of indoor electric lighting systems. CIE Technical Report -
Publication No. 97. Vienna.