The project entailed the development of ground and first-floor extension to Artek 4 Architect offices. New open plan drawing office to the first floor constructed with Light steel frame. Garage and storerooms to the ground floor in brick.

Was the project envisaged in steel from the start? If not – why was it built in steel in the end?

Yes, it was envisaged in LSF from the start. The client had previously worked with LSF building method and chose this option for speed of construction, green building attributes and wanting a mix of construction methods at their office expansion.

Give a brief description of the structural framing. What type of sections were used (e.g. hollow, cellular, I beam etc.) and why?

A standard frame-cad LSF lip channel section was used for all walls and roof structures. 90 x 40 x 0.8mm LSF Section.

Give a brief description of the cladding process (complexity, difficulty, innovation etc)

  • The building exterior cladding comprised of a OSB sub-board, Tyvek vapour barrier and 12mm fibre cement sheets. This was painted to seal the boards.
  • Thereafter timber cladding was used, comprising of Timber battens running vertically at 400m centres. The final clad finish is Siberian larch in a T+G profile. All to create a stunning finish to the building.

Give a brief description of the Light Steel Frame Building element of the project. (Notable features/ achievements made possible by LSFB)

  • Light steel frame was used for the floor joists, wall panels and roof trusses.
  • Due to the lightweight structure, the client was able to use the existing foundations. The big glass shopfront opening and canter lever LSF floor required some additional design input and steel plating.

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.

No colossal challenges as the versatility of the LSF system provided some simple solutions.

What is special/ unusual/ innovative/ aesthetic about the steelwork/cladding
in this project?

The timber T+G cladding creates an awesome finished product and effect.

It was quite exciting for us to use this cladding as this was our first contract cladding a building in timber. The finished result we found was stunning.

How did the project team work together (e.g. contractor involved early, challenges/ ease of communication etc.)?

  • All worked smoothly, Shospec were the LSF specialists and other sub-trades were done by the architect.

A brief summary from the project given by the client “Somer Govender”.

  • “Artek 4 Architects Durban office is in the process of becoming part of a precinct named Green Houses located at 44 & 46 Lena Ahrens Road, Glenwood. The buildings constructed in the early 1920s are Edwardian Period in Vernacular style and Union Period, Berea Style house. The properties are neighboured by three historic “listed” double storey houses of Edwardian Period in Vernacular style, creating a mini-precinct of heritage buildings. The proposed additions are modest “clip on” lightweight steel and timber clad (FSI rated Siberian Larch) structures so as to not compete with the original dwelling and can be easily removed to bring the building to its original state. The intervention is based on minimal simplicity and honest materials of the period correct Bauhaus movement. When juxtaposed, the period styles enhance the character of the historic buildings but is also inclusive of the origins of modern architecture.

An inclusive process to ensure that the very essence that makes the historic building special is not lost. For the effective transformation from house to office, the design has considered the actual users which consist of a multitude of cultures endemic to our society. A variety of cultural inclusiveness is adopted in materials, patterns, colours and style in the building fabric. Much attention is paid to energy efficiency, water conservation/management and use of renewable materials and a Green Star process has been adopted.”

Completion date of LSFB work June 2018.
Completion date of full project August 2019.
Tons of LSF used 2 173 Tons
Span of trusses and Kg/m2 (if applicable) 7 766 meters
Profiles used Frame Cad – C Section
Type of cladding 18mm OSB tongue and groove,12mm Fibre cement and Timber T&G planks.
Completion date of cladding July 2018.
Cladding profile/ type used SAFLOK 700
Cladding area/ coverage and tonnage 78m²