The roof structure provides protection from the elements.  As part of the upgrade of the Fourways Mall, a new roof was proposed. The fabrication process required several fabrication jigs to be made up to accommodate the roof design for the project. The roof was built on ground level and erected on temporary roof support steelwork. tubular sections were rolled into various radii and the cross bracing was individually profiled cut to allow a stub-on connection to the main truss struts. The challenges faced during erection involved fitting a new roof onto the temporary structure and accuracy of fabrication & erection was of the essence.

What was the brief to the architect?

Provide a roof on the new Mall extension that is both practical as well as aesthetically pleasing on the eye.

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

Yes proposed as steel from the beginning

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

The roof trusses are made entirely from Circular Hollow Sections (CHS), Cruciform Columns supporting the roof was made out of plate

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

Cladding to the roof was done by TDS, the roof was covered with Shutter board, Spider-P waterproofing & Synthetic TPO membrane

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

The project is aesthetically appealing in the shape of this roof design.

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

Constant communication between the Steelwork Contractor and the Structural Engineer was critical to get agreement on being able to fit the new roof.

STRUCTURAL STEELWORK
Completion date of steelwork 28-02-2019
Completion date of full project TBA
Tons of structural steel used 160t
Structural profiles used Tubes, UB, UC & CFLC
SA content – if this is an export project 100% local procured
PROJECT TEAM COMPANY
Nominator CADCON (Pty) Ltd
Client/ Developer Azrapart (Pty) Ltd
Architect Boogertman + Partners
Structural Engineer WSP Africa
Engineer WSP Africa
Quantity Surveyor Quanticost QS
Project Manager SIP Project Managers
Main Contractor Mota-Engil Construction South Africa
Steelwork Contractor CADCON (Pty) Ltd
Steel Erector Ijaca
Cladding Contractor Hulabond Cladding
Skylight Rainbow Skylight S.A. (Pty) Ltd
Corrosion Protection
Paintwork Contractor
TDS Contractors