African Design Magazine ADM #40 May 2018 | Page 26

GATEWAY WEST
• Alternative transport connectivity
(bicycle and shower facilities).
• To achieve this, the LEED
commissioning agents subjected the
following systems to the fundamental
commissioning process, as per
ASHRAE 0-2005:
• Heating, cooling, refrigeration,
ventilation systems and controls
• Lighting and daylighting controls
• Domestic hot water systems with low-
flow fixtures
• Water conservation systems, including
grey water harvesting.
As a result of these measures, there
was a predicted water use reduction of
40% and 27% energy savings against the
ASHRAE baseline.
In order to predict energy savings prior
to construction, energy models were
used to inform the specification of the
building’s façades. The architects elected
to use double-glazing and single-glazing
together with sun louvres to provide
optimised thermal performance.
This was complemented by air-tightness
tests that ensured that the building was
designed relative to its specific micro-
climate. This provided both a reduced
load on the building’s systems together
with a substantial improvement in
the comfort levels for the building’s
occupants. Further adding to the
comfort and wellbeing of the occupants
is the use of low VOC coatings and
nearly 30% higher fresh air rate above
the SANS guideline.
Alternative transport modes are
encouraged and the incorporation
of secure bicycle racks together with
access to a well-connected public
transport network, ensure that the
carbon footprint of the occupants is
minimised.
Conclusion
Gateway West has managed to achieve
success on a number of levels, creating
an impressive landmark in Waterfall City.
The iconic nature of both the site as well
as the completed building is evidenced
by the blue-chip tenants that have
already secured long-term leases in the
building.
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AFRICAN DESI