South Africa Green Star
S
outh Africa’s first Green Star-rated building building’s design, although a separate certificate
will reach practical completion next month. for the completed building, known as the As-Built
It’s a large one – Phase II of financial services certificate, is also being pursued. Four stars under the
group Nedbank’s headquarters in Sandton, Green Star system means a score of 45 to 59 per cent
the business district of Johannesburg, comprises and ‘Best Practice’ status, while five stars reflect a score
42,000 sq m of office space and will accommodate of 60 to 74 per cent and ‘South African Excellence’
3,000 employees. status. Six stars means a score of 75 per cent or above
WSP Green By Design, the sustainability adviser on and ‘world leadership’ status, although the council’s
the project, has calculated that the building’s green technical manager, Jason Buch, believes it will be some
features will reduce carbon emissions by 30 per cent, time before a six-star building is completed in South
for an additional build cost of just 2.5 per cent. It is Africa.
the first development to undergo certification by the Climate is an important factor in Nedbank Phase
Green Building Council of South Africa, scoring four II’s design. Johannesburg has dry winters that last
stars out of a possible six under the council’s Green from March until November, with average daytime
Star system. temperatures a comfortable 15C to 20C, although they
Points are awarded under nine separate category can drop to zero at night. Summers are both wet and
headings; developers can pick and mix from a range hot, with temperatures reaching 35C.
of green features, allowing, for example, a building to WSP’s Marloes Reinink, the green building
score highly on energy efficiency but much less for consultant on the Nedbank project, says offices in
water efficiency. Johannesburg only need heating for three months
The four-star certificate only covers the Nedbank of the year. Air conditioning in most South African >
Nedbank Phase II (here and
over pages) became a test-bed
for Green Star in South Africa
WSP
www.cibsejournal.com March 2010 CIBSE Journal 33
CIBSEmar10 pp32-35_nedbank.indd 33 25/2/10 16:00:11
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