• Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA
  • Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA Project: New Headquarters for Statistics SA

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Project: New Headquarters for Statistics SA

Online since 30.01.2017 • Filed under Project • From Volume 5 - 2017
Project: New Headquarters for Statistics SA

Winner of the Cladding Category of the SA Institute of Steel Construction Awards 2016, the new headquarters for Statistics SA (Stats SA) certainly catches the eye.

 

Project background

The R 1.4 billion contract at the time was awarded in 2014 to the Dipalopalo Consortium. Prior to the new building’s completion, Stats SA was housed in three separate buildings – two in the Tshwane CBD and one in Pretoria West. The move into the new building heralded consolidation of operations into a central 31 800 m2 commercial office floor space, bringing with it much greater efficiencies. The project finance was arranged by investment bank Nedbank Capital on a public private partnership (PPP) basis. Of the project finance, the government s contribution was R600 million.


Notwithstanding its status as a public service building, significant planning and effort went into the design and construction of the new headquarters. Consequently, the new building achieved a 4 Star Green Star SA Office v1 Design rating according to sustainability consultant, Solid Green. One of the striking features of the new Stats SA building is its impressive roof and bold clad angled walls. Using the iconic Chromadek® brand supplied by ArcelorMittal South Africa, Global Roofing Solutions were requested to supply roofing and cladding in the Brownbuilt profile.


According to Global Roofing Solutions National Specifications Manager, Lyle Jeffery: ‘The sheeting profile contemplated by the architect was the Brownbuilt standing seam. This profile was first launched in 1964 and was the first concealed fix roofing profile in South Africa at the time. Both architects Marius Botha and Leon Fourie (GLH & Associate Architects) wanted a profile with a contemporary yet retro feel. So, with the slim shadow lines and wide broad pans offered by Brownbuilt they could achieve this. A particular challenge was the extensive bespoke flashings that were required to integrate the many windows with the Brownbuilt sheeting. This feature was excellently accomplished by the Roofing Installer Tate & Nicholson (RJ Southey)’.


Technical details

The building’s roof and side cladding is rolled from 0.58mm galvanized Z200 GRS Brownbuilt profiled sheeting with the standard Chromadek® finish. Chromadek® colours used include Dove Grey, Dark Dolphin and Charcoal Grey. The roof and walls were insulated by means of over purlin on roof and sides using 40mm thick white faced

Lambdaboard and Sisalation 405.


According to the Awards citation, the site was congested and subject to a very tight installation timeline. The buildings were high, with several angles and direction changes on the sides. Brownbuilt underslung sheeting in long lengths tapered with the angles. Concealed-fix flashings were specified by the architects.


This was a difficult application, made simpler when the main contractor assisted with cranes and special scaffolding. Once in place, the installation process was made easier by the application of specially designed clip-on flashings. ‘What makes this project special is that all roof sheeting, side cladding and soffit sheeting is concealed-fix sheeting. Most flashings were concealed-fix and designed to hide fasteners. The most impressive technical aspect of this project is the underslung Brownbuilt profiled sheeting and special flashings’, says Jeffrey.

 

Project professional team:
Developer: Dipalopalo
Architect: GLH Architects – Terra Ether JV
Structural Engineer: Pure Consulting
Quantity Surveyor: RLB / Pentad
Project Manager: GLH Project Manager
Main Contractor: STATS SA JV
Green building consultant: Solid Green
Steelwork Contractor and Nominator:
Cadcon (Pty) Ltd
Structural Steel Detailer / Detailing Company:
Mondo Cané
Cladding Contractor: Tate and Nichols
Metal Cladding Supplier: Global Roofing
Solutions
Steel Roofing Material Supplier: ArcelorMittal
South Africa
Paintwork: Dram Industrial Painter


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