Architect and Builder Magazine South Africa January/February 2015 | Page 65

The grassland sweeps over the architecture, and it in turn merges with its surroundings by exploiting the slope of the land to intentionally reduce its scale Design The grassland sweeps over the architecture, and it in turn merges with its surroundings by exploiting the slope of the land to intentionally reduce its scale. The fragmentation of the building components enhances its connection with nature by juxtaposing the buildings organic shapes with the highveld landscape. This achieves a harmonious symbiosis between nature and the architecture which nestles within it. Materials and Structure Concrete was the perfect choice for the project as it was the only material that allowed for the creation of organic shapes, which fulfilled the ‘blend into nature’ concept. An integral part of the design was the building’s Steyn City Clubhouse large concrete green roof. Supported by an engineered slab, the green roof allows the building to blend seamlessly into the landscape. Not only aesthetically pleasing, the landscaped concrete roof helps to regulate the thermal mass as it absorbs solar energy during the day and then shifts the load entering through the roof at night when the rest of the external loads are not present. The activated concrete slab for the clubhouse lounge also acts as thermal storage and removes the peak cooling load of the west facing facade. This system is also more energy efficient than cooling/heating with an air based system when the doors are open. This allows the passive ventilation system to function optimally and allow for the 65