View Online

Interbuild take off 19 Aug 2018
Fourways take off July 2019
Cape Construction take off 14 September 18

Case history: Cooling Capital Hill

Online since 5.11.2015 • Filed under Advertorial • From Issue 16 page(s) 174
Case history: Cooling Capital Hill

A new prestigious office development in Sandton, Johannesburg, is using a combined smoke and natural ventilation system involving automatic window vents in the building’s elliptical glazed central tower, which is actuated and controlled by an integrated solution from SE Controls Africa.

Located in the Sandton business area, regarded as one of South Africa’s prime commercial locations, the multi-million Rand Capital Hill development combines seven floors of office space, as well as covered parking for vehicles. Designed by MWLF Architects, the building provides high-quality business facilities, it is highly energy efficient, and is constructed to achieve a Four Green Star rating from the Green Building Council of South Africa. As part of this process, the building’s 12 storey elliptical central tower features a fully glazed external facade within an aluminium lattice structure, which incorporates an automatic window and vent opening system to provide natural ventilation and overnight cooling, as well as smoke ventilation in the event of a fire.

To achieve the necessary level of versatility and control required for the automated vent system, SE Controls supplied 49 SECO N 24 25 twin-chain actuators with a 350mm stroke length together with seven SHEVTEC® control panels and manual control points, which were networked using the company’s OSLink network cards. An external weather station was also installed to provide an information feed into the system about ambient conditions. In normal operation, the windows open and close automatically to provide cooling and a supply of fresh air. However, in the event of a fire this is over-ridden  and vents are opened to allow smoke to be vented, enabling escape routes to be kept smoke free. Russell Cramb, key accounts manager at SE Controls Africa, explains: ‘Capital Hill is an iconic building and has already attracted a lot of attention for its eye-catching design, green credentials, and the quality facilities it provides. We have an immense amount of experience in combined natural and smoke ventilation solutions, which we used when working with the architect to create a solution that wouldn’t compromise the smooth architectural lines of the external glazed facade.’

SE Controls

T + 27 31 466 1857


Issue 16

Issue 16

November 2015

This article was featured on page 174 of
To Build Magazine Issue 16.

Share this

Power Purchase  Conference 2018 take off 23 Nov 18
 Affiliated Members AAAMSA - The Association of Architectural Aluminium Manufacturers of South Africa | Tel: 011 805 5002 CifA Institute for Landscape Architecture in South Africa KSA - Kitchen Specialist Association | Tel: 0827878806 SAIA