The steel structure allowed an opportunity to open the residence up with large glazed areas and contrast the heavy mass of the curved brickwork and sculptural concrete elements. The structure achieves a lightness, transparency and legible simplicity with single pitched roofs, straight lines and clean exposed steel structure maximizing natural light and views. Its deliberate contrast creates a composition of spaces of a different character, complementary to the Client’s lifestyle, which required a balance between privacy and modern outdoor living.
The brief was to design a unique & modern residence that could take advantage of the extensive views that existed on the site, without compromising the need for enclosed private spaces where the family could live & work. The strong focus on family living called for the brief to address the inclusion of multiple communal areas, balanced by private areas for the individual. Space, natural light & comfort needed to be included in all aspects of the design.
Was the project envisaged in steel from the start? If not – why was it built in steel in the end?
The roof structure and the support structure as a steel assembly was a major component of the initial concept, fulfilling the brief for light, openness, views, and modernity. The large rafter spans & spacing that is possible with using steel rafters made it possible to install high-level windows in the bedrooms, satisfying the requirement for natural light and privacy. Steel columns supporting a steel roof structure allowed the living areas to be almost completely glazed and substantially openable, blending inside with outside on opportune days with unencumbered views.
Give a brief description of the structural framing. What type of sections were used (e.g. hollow, cellular, I beams etc) and why?
Hollow rectangular sections for exposed roof purlins. Lipped channel sections for concealed roof purlins. I-Sections and H-Sections for support columns, beams, and rafters.
Were there any challenges in the fabrication of the project from the engineer’s design – if yes, please tell? Tell more about the fabrication and erection process if it was complex, difficult, innovative etc.
The challenge on this project was to integrate the strong linear lines and rectilinear forms of the steel structure with the curved organic forms of the brick structures. All of the steelwork was fabricated off-site and then erected on site, which ensured a high degree of accuracy & finish.
What is special/ unusual/ innovative/ aesthetic about the steelwork/cladding in this project?
All steelwork was exposed and visible, resulting in the need for all the connections, fixings and joints to be carefully and deliberately detailed. The roof sheeting similarly complemented the main off-shutter concrete roof in form and needed to be installed in a manner that focussed on the neatness of edges and aesthetic appeal.
How did the project team work together (e.g. contractor involved early, challenges/ ease of communication etc.)
The Main Contractor was involved very early in the design process, providing valuable insight into the structure and design. The successful collaboration of the Contractor and Consultants from project inception established a harmonious working relationship on site where all were committed and focused on creating a unique & beautiful home.
|Completion date of steelwork||July 2016|
|Completion date of full project||September 2017|
|Tons of structural steel used||10 tons|
|Structural profiles used||I-Sections, Lipped Channels|
|SA content – if this is an export project||n/a|
|Completion date of cladding||November 2016|
|Cladding profile/ type used||Macsteel Arona Roofing Novotexi Roof Sheeting|
|Cladding area/ coverage and tonnage||550m2|
|PROJECT TEAM ROLE||COMPANY|
|Nominator||SNAPP Architects (Pty) Ltd|
|Architectural Team||SNAPP Architects (Pty) Ltd|
|Structural Engineer||Dippenaar & Lapage (Pty) Ltd|
|Main Contractor||NGA Construction (Pty) Ltd|
|Steelwork Contractor||N2 Steelworks|
|Steel Erector||N2 Steelworks|
|Cladding Manufacturer||Safintra – Saflok 700|
|Cladding Supplier||L.R.S. Building Contractors & Suppliers|
|Cladding Contractor||L.R.S. Building Contractors & Suppliers|