Architect and Builder August 2017 | Page 71

WINNER: COMMERCIAL OFFICE DEVELOPMENTS No. 5 Silo, V&A Waterfront N o. 5 Silo is the third building in the V&A Waterfront’s Silo District to be completed. The client wanted to create a vibrant, mixed- use and sustainable district that would combine residential, office, leisure and retail opportunities as well as creating a pedestrian-friendly link between the Waterfront and Cape Town’s CBD. The precinct plan provided for an open shaft of public urban space between No. 5 and No. 6, named the Boulevard, starting from the south façade of the historical grain silo building and extending to South Arm Road. No. 5 Silo therefore became pedestrian permeable, with a public street and arcade allowing access to and through the building from all sides. The intent is that the building be accessible and public, but also easing access from the bus stop and from the harbour. This is further supported by retail and public facilities at ground level. The street is not only an ‘urban’ idea, but also became part of the sustainability agenda of the building. It is naturally ventilated with high level fans maintaining movement of air. This becomes a new type of atrium - un-conditioned and immediately accessible to the public. The architects sought design themes that suited the location of the district as part of a working harbour: themes of fit-for-purpose, workman-like and dockside-warehouse. Expressed materiality and appropriate detailing were considerations equally as important as resolving the functional and programmatic requirements of the brief. The roof is a saw toothed design bringing south light into the atrium, thereby maximising the amount of natural light. Materials chosen for the building consist of exposed concrete, raw concrete block-work, uni- tised glass and tile cladding, glass curtain walling, rough cut timber panelling, exposed steel structural members, steel framing and grillages, cobble and flagstone paving, bold ‘warehouse signage’ and ‘street lighting’. The technology and structure of the building is expressed in the design aesthetic and not hidden from the public eye. In No. 5 Silo the construction and technological elements are also openly expressed. Brick and block walls and concrete pillars are left in their natural state and un-clad and unrendered within the public space. Once you move away from the public spaces the finishes become more refined and controlled. No. 5 Silo was awarded a 6 Star Green Star Office v1 Design Rating and Arup’s sustainability consultants are in the process of compiling the as built submission, also targeting 6 stars. This is the second building in the Silo precinct to achieve the highest rating awarded by the GBCSA, after No. 1 Silo. SAPOA Awards Originally aiming for a 4 star Design rating on No. 5 Silo, it had become evident upon completing the energy modelling that the results were bringing in the building just short of a 6 Star Design rating. Upon discussion with the client, certain elements were re-evaluated in an attempt to obtain the additional points required. Developer/Client: V&A Waterfront Operations Managers: V&A Waterfront Principal Agent: Mace Management Services Architects: Van der Merwe Miszewski Architects and Jacobs Parker Architects in a JV Quantity Surveyor: MLC Structural Engineer: Arup Mechanical Engineer: Worley Parsons Electrical Engineer & Traffic: GIBB Rational Fire Design: Sutherland Lift Consultants: Solutions for Elevating Sustainability & Wet Services: Arup Landscaping (Roof): Planning Partners Health & Safety: Eco-Safety Façade Engineer: Arup Acoustic Consultant: SRL South Africa Land Surveyors: David Hellig & Abrahamse Interior Design (PwC): Formist Interior Design (End user): Collaboration ICA: Matrix Consulting Services Main Contractor: WBHO Construction Featured in Architect and Builder Volume 67/Issue 6 - December 2016 71