Pearl Building Rating System - Estidama

Fixture of Fixture Fitting Percentage Reduction
Bathroom Taps, private 6 liters/min at 417.7 kPa
Bathroom Taps, public 1.9 liters/min at 417.7 kPa
Shower Head 9.5 liters/min at 551.6 kPa
Kitchen Sink Faucet 6 liters/min at 417.7 kPa
Bidets 6 liters/min
Urinal 0.5 liters/flushing cycle
Toilets (Dual Flush) 6/4 liters/flushing cycle (full/low)
Occupancy
� Non-Residential
o Occupancy is determined based on the number of Full Time Equivalent
(FTE) permanent occupants and transient visitors.
o The FTE is determined based on a typical 8 hour working day. The
permanent FTE is then calculated as follows :
o Transient occupancies must be input as daily totals.
� Residential
o Covers all primary spaces used for living and / or sleeping. Occupancy
is based on number and size of residential units within the building.
� Mixed Use
o Where a building is mixed use i.e. contains occupancies with different
fixture uses, this will need to be documented within the building water
calculator. A maximum of 8 different fixture use occupancies may be
included (6 Non-Residential and 2 Residential).
Example :
A 40 storey building located in downtown Abu Dhabi includes ground floor retail, 20
office floors, 15 multi-residential floors and 4 penthouse floors. Only the penthouse
floors are supplied with baths.
Based on the above, 4 different fixture uses would be required as follows :
� retail,
� office
� multi-residential
� penthouse
References � Pearl Rating System Building Water Calculator
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 119 of 223