V&A Waterfront’s No. 1 Silo overall SAPOA winner
No. 1 Silo at the V&A Waterfront has been named as the overall winner of the annual South African Property Owners Association (SAPOA) Innovative Excellence in Property Development Award, announced in Cape Town on 11 June 2014.
The building, which is the 18,500m² corporate head office of blue-chip company Allan Gray, has been awarded the region’s first GBCSA Six-Star Green Star SA rating. It is also seeking an ‘As Built’ rating. As the sustainability and Green Star consultants on the No. 1 Silo project, the Arup team (led by Jaco Kemp) was instrumental in bringing the vision of a 6-Star rating to fruition. Arup were also the mechanical, façade and ICT consulting engineers for the job.
Besides being the overall winner at SAPOA, it also won the corporate office development category and the overall green award. No. 1 Silo is part of the first phase in the Silo precinct of V&A Waterfront, which will soon see the redevelopment of the historical Grain Silo and several other buildings around the Grain Silo, projects on which Arup sustainability and engineering disciplines are also working on.
Kemp hails the client team of the V&A Waterfront (developer) and Allan Gray (tenant) for their unwavering enthusiasm in reaching the elusive 6-star rating. “A client with such a clear and ambitious vision is what every consultant hopes for. The rating was the icing on a dream job. We trust that this will open the door to more property owners and tenants demanding green solutions to their new-builds or retrofitting. Good, sustainable design is more that the right thing to do, it makes business sense – as this prestigious award by SAPOA shows.”
As consulting engineers, Arup prides itself on good design principles and the team looked extensively for engineering solutions that would respond to and harness the environment of the building. With sustainability features in abundance, No. 1 Silo is designed to reflect its tenant’s company values and encourage greater communication between its staff members.
Another key to the 6-star rating is the façade on the building. The largely glass design presents challenges, as it needs to remain as transparent as possible, whilst eliminating glare from not only the sun but the sea as well. Glass also adds to energy usage, due to the need for extra cooling in summer and heat loss in winter. To manage this, the building has a double skin façade on the northeast and northwest elevations. These have a clear glass outer layer, 700 mm outside the main façade – which is double-glazed. To deal with the glare, there are automatically controlled blinds, found between the two façade skins, which track the sun as it moves across the sky.
Many other alternative solutions were sought, including:
- Under floor displacement air conditioning system
- Solar thermal panels and heat pumps
- Energy and water sub metering
- Energy efficient lighting and lighting sensors (only using lighting when required)
- Sub soil drip irrigation and hardy plants used to reduce landscape water need by 50%
- Sustainable use of materials including a reduction of cement usage by approximately 60% and responsibly sourced timber
- Intelligent building management system to create operational efficiencies
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