project
33
Hot water is supplied to the kitchenettes on the first
and second floors, the shower WC on the ground
floor, and the main roof kitchen only. No hot water is
provided within the male and female toilet blocks. This
minimises hot water consumption, reducing the amount
of energy needed to heat domestic water.
Hot water is pre-heated within a rooftop solar system
and stored within an insulated 600kPA geyser located
within the plumbing riser.
Potable water consumption is further reduced through
the on-site treatment of effluent. Treated water is
then reused within the building to flush toilets and
irrigate the roof garden. Following the collection and
storage of effluent in three inter-connected septic
tanks, the Lilliput plant then treats the water in a
four-stage anaerobic process, improving water quality
to a level suitable for discharge into a stormwater or
river system.
Consumptive use of non-potable water through use
as irrigation water is supplemented by a 10 000ℓ
rainwater harvesting system. Rainwater is collected
from both the upper and lower roofs channelled to the
basement, filtered, and then reused by pumping back
up to the rooftop holding tank.
List of professionals
Owner
Developer
Architect / Designer
Project manager
Consulting engineers
Electrical
Mechanical
Wet services
Fire
Structural and civil
Sustainable building
Quantity surveyors
Contractors
Product suppliers
Main building
HVAC & R
Gas heaters
BMS and CO censors
Axial fans
Basement extraction fans
Server room mid-wall split
Ducting
About the WWF
The WWF is one of the world’s largest and most
respected independent conservation organisations, with
almost six million supporters and a global network active
in over 100 countries. WWF South Africa (WWF-SA) is a
www.plumbingafrica.co.za
Smart metering
has been installed
throughout the
building and
connected to the
building monitoring
system.
The automated drip irrigation system delivers optimal
quantities of water to the indigenous plants within the
rooftop flower boxes. The system includes a rain sensor
to ensure overwatering does not occur, as well as
minimise water consumption during rainy periods.
Source: gbcsa.org.za
WWF South Africa
WWF South Africa
Alive Architecture
Bornman & Associates
Onezero Consulting
Bornman & Associates
Solar Power Installations
Building Code Consultants
TG Harrison
Bornman & Associates
Russell Irons & Associates
Giuricich Brothers Construction
Kenred Air
Rinnai Paloma gas heaters
Greenwave Automation
Air Movement Supplies
Air Movement Supplies
Samsung
Metflex Industries
national office that is part of the WWF network. They are
a local NGO that, for more than 40 years, has worked
towards the aim of inspiring all South Africans to live in
harmony with nature, for the benefit of our country and
the well-being of all our people. PA
Consumptive
use of non-
potable water
through use as
irrigation water
is supplemented
by a 10 000ℓ
rainwater
harvesting
system.
August 2017 Volume 23 I Number 6