30 Baker Street, Rosebank is now home to 5 000 Standard Bank employees. While the bank’s head office remains in Johannesburg, the new offices will house the various divisions that occupied different spaces within the city.The tri-generation plant will provide electricity, hot water and cold water. The existing Egoli Gas line that runs under the building will act as the power source for the plant. The production capacity of the plant is 1 MW and this energy will be used on site.

The facade is an interesting element as glass isn’t quite considered green but in this instance it adds greatly to the aesthetics and sustainability. The glass is triple-glazed and has remote activated blinds. At 240 mm, the triple facade is one of the thinnest in the world. The facade was designed with the blinds located in the outer cavity between the second and third skins. The second cavity shields occupants from direct sun rays and is situated on the inside of the building. The team spent two years designing the facade and another year testing it.


Sustainability features

  • Rainwater harvesting
  • Dual flush toilets
  • Gas powered tri-generation plant
  • Separate energy meters
  • DALI
  • 50% FSC-certified timber
  • PVC minimised
  • Recycle area
  • Triple glazed glass curtain wall
  • 422 indigenous trees


* Read the full article in the October-November 2013 issue. Images: Christoph Hoffmann