African Design Magazine ADM #43 August 2018 | Page 37

HILL ON EMPIRE result being, that the design is cost-effective and energy efficient as well as providing competitive rentals to tenants of all sizes. The concept was to design four buildings, each with wings on the North South axis for the purpose of energy efficiency, with central cores for maximum tenant subdivision. The buildings were built one at a time, and the super basement added with each phase. On completion of the development the total scheme is 35,000m² comprising of Building A at 7,110m², Building B at 7,855 m², Building C 8,600m², and last but not least Building D at 12,750 m². The approach was to start with the design of a super basement to provide parking requirements of a 35,000m² site. Due to the fall of ground, the ground floor level is related to the entry point on Empire road, with the 3 basements exposed on the West side of the site. The main entrance to the basement and park was thus set between two phases of building A and B. Phase one was Building A, the entrance and ramps between A and B, and a quarter of the central square. In mid construction a major tenant was signed with a large area requirement and specialised column free, double volume height office and conference areas. This first phase was then redesigned to incorporate the large double volume bridge element linking it to Building B. This triggered the completion of a further quarter of the central square. Energy efficiency was remained on top of mind throughout the Hill on Empire development process. The architecture is contemporary with glass predominantly on the North and South facades. High heat East and West end of wing facades are AFRICAN DESIGN MAGAZINE © | AUGUST 2018 37