Architect and Builder Magazine South Africa Dec 2017 / Jan 2018 - Page 27

into the process,” says Jaco Kemp who leads the sustainability team at Arup. “Compared to No. 2 Silo, we tried to increase energy efficiency in the HVAC and the façade design. The design concept for No. 3 Silo and No. 4 Silo consists of three distinct towers, unified by the lightweight glassy vertical transportation cores. Dividing the buildings into three towers increases the surface area of the façade and allows for maximum views, correct orientation, influx of light and ventilation,” Kemp adds. No 3 & 4 Silos Arup designed a series of different façade types for the multi-unit residential and gym buildings, with a particular focus on reducing the heat loads through solar gain in order to limit energy usage. “The client required stringent weather performance, acoustic infiltration limits and excellent overall product quality due to the project’s location in a harsh seaside working harbour and the image of the development”, explained Tessa Brunette, Arup façade designer on the project. No. 3 and No. 4 Silo are currently in pursuit of a Green Star Custom Mixed-Use rating. 27