Architect and Builder Magazine South Africa Dec 2017 / Jan 2018 - Page 34

The structural design has benefitted from the use of Saint-Gobain dry-wall partitions throughout the guest room floors. The partitions between the rooms had to comply with fire safety requirements, and the acoustic requirements from the operator. The light weight partitions have reduced the loads on the slabs and on the overall structure quite significantly. In addition however, the structural design had to incorporate the loads of the brick masonry walls on the west and east façades, which are actually hung on the slabs as outer brick skins. This has added to the elegance of the masonry façades; especially to the east. Wet Services Sutherland designed a centralised hot water system, with energy efficient heat pumps used for primary water heating. The system serves the entire building with no resistive heating utilised. The energy efficiency is increased by the usage of ‘free’ heat recovered from the district’s sea water system for hot water pre-heating, significantly 34 reducing the size and cost of the plant required. Circulating energy losses were reduced by optimising the loop temperatures and water usage decreased by the use of low flow fittings and reduced hot water dead leg runs. VSD driven booster pumps were utilised throughout, further increasing the energy efficiency of the overall system. Electrical Sutherland’s electrical design had to take into account energy efficiency as required by the V&A and the hotel operator. The central District cooling plant assisted tremendously in energy efficiency and consumption. LED lighting was installed extensively from both an energy efficiency and maintenance point of view. In the restaurant, main lobbies and entertainment areas, the bespoke luminaires were designed and chosen in close conjunction with the Interior Designers to give the hotel a different and somewhat funky feel. One of the main feature light fittings called a ‘spitfire’ was sourced and imported from the Netherlands. No 6 Silo