Pearl Building Rating System - Estidama

LBi-7: Daylight & Glare
Intent To promote building designs that maximize the use of natural daylight indoors.
Credit
Requirements
GENERAL
Install daylight sensors to light fittings that receive sufficient daylight illuminance.
Install occupancy sensors in all rooms intended for individual occupancy, conferencing or
meeting rooms, open plan offices spaces and hallways or corridors.
Demonstrate that glare control devices have been designed and installed, such as:
� Automated or manually controlled internal or external glare control devices to all
windows
� Automated glare control devices must be connected to the building management
system
All manually controlled internal glare control devices must be no wider than 4 linear
meters and be directly controllable by occupants.
Demonstrate a minimum daylight illuminance of 250 Lux on the working plane (762mm
from finished floor level) for a percentage of the occupied area, as follows:
� 1 Credit Point: 50% of the occupied area
� 2 Credit Point: 75% of the occupied area
ADDITIONAL REQUIREMENT/CLARIFICATIONS
Occupied area spaces that are specifically intended to avoid daylight, such as auditoria,
can be excluded from calculations.
Retail
All Retail areas are excluded from achieving this credit. For mixed use developments
involving retail spaces submitted under a single application for a Pearl Rating, project
teams must not include calculations and area schedules associated with retail areas.
Residential
Install occupancy sensors in all communal spaces of the building including hallways.
Demonstrate a minimum daylight illuminance of 200 Lux for each living area (excluding
home theatre) and bedroom (excluding maids’ room) as follows:
� 1 Credit Point: 50% of the net floor area per room and for each room
� 2 Credit Points: 75% of the net floor area per room and for each room
Schools
Install occupancy sensors in all rooms intended for individual occupancy, classrooms, open
plan offices spaces and hallways.
Install glare control devices that comply with general requirements.
Demonstrate that a minimum daylight illuminance of 300 Lux on the working plane
(762mm from finished floor level) for a percentage of the occupied areas as follows:
� 1 Credit Point: 75% of the occupied area
� 2 Credit Point: 90% of the occupied area
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 105 of 223