need for potable water . Potable water use is estimated at 0.48L / day / m 2 .
• Water efficient sanitary fixtures have been installed within the building . This reduces the amount of potable water required and further reduces the amount of water drained down into the sewerage system with an estimated 0.57L / day / m 2 .
• Fire Systems testing in buildings is typically responsible for millions of litres of water wasted due to weekly routine pump testing and other tests to the systems .
This water is heavily oxidised and not suitable for reuse and would normally be discharged to the sewer . To preserve the potable water , wastage isolation valves are fitted on every floor to ensure individual draining of each floor . This means that in cases of malfunction , only the relevant floor can be tested and drained without draining the fire system for the entire building . 99 % of the water used in routine testing is recycled back into storage tanks . These design strategies allow for a saving of millions of litres of water per annum .
Resource Efficiency A waste management plan was implemented to reduce the amount of construction and demolition waste going to landfill by 70 %.
The project design and construction processes have identified opportunities to reduce the production of construction and demolition waste and identified suitable recycling / reuse opportunities .
Easily accessible recycling waste storage stations for cardboard , paper products , glass , plastics and metal have been provided .
Passive design strategies , which were extensively modelled by WSP in Africa ’ s Green by Design team , have been incorporated to reduce the amount of energy needed to achieve a comfortable indoor temperature . For example , Tower Block 2 ( consisting of concrete walls and brick cavities ) is orientated on the western side of the building therefore decreasing the exposure of the building occupants to the excessive
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