What is the purpose of the structure/ project?

The steel trusses of the roof was designed to enhance the aesthetics of the building, bringing in softer lines. The roofs themselves are broken up, to mitigate the massive bulk of the building and to accentuate the various space within. The roof is not only experienced from the outside, but also from inside, where the steel trusses makes it possible for the ceiling to sit flush with the steel, without additional cross bracing or support.

What was the brief to the architect?

The majestic house rises up from a beautiful portion of land with views in all directions. The soft curves of the building as well as the material palette allows the building to gracefully blend into its surroundings. In order to ‘fit in’ the extensive accommodation list the client presented us with, we had to utilise a basement, stretching almost the entire footprint of the stand, to accommodate some of the exciting features of this residence.

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

The steel was the most obvious solution for the roof in particular from the start

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

The trusses are made up of I-beams, some curved and welded in the middle to form the apex of the roof. The purlins are lipped channels. The columns are mainly round steel columns to support the upper level slabs, and bridge.

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

To create the curved roof, non standard truss design had to be employed. The trusses were made up specifically, with each of the roofs that have a slightly different span.

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

The project manager ensured that the team was fully informed and worked well together. Additional specialists eg. roof sheet specialists were consulted from the start, to ensure that the project could be executed as planned.

Tons of structural steel used +- 6 ton
Structural profiles used Chanels, Lipped Chanels, I-Beams
Cladding profile/ type used ZincAlume Kliplock 700 Sheet
Cladding area/ coverage and tonnage 560sqm (includes roof sheeting)

Project Team 

Nominator Strey Architects and Associates (Pty) Ltd
Architect Strey Architects and Associates (Pty) Ltd
Structural Engineer PVA Consulting Engineers cc
Project Manager Earthstone Properties
Main Contractor Earthstone Properties
Steelwork Contractor Gert Visser Staalwerke
Steel Erector Gert Visser Staalwerke
Photographer, Photo competition Strey Architects and Associates (Pty) Ltd
Photographer, Other submitted images Strey Architects and Associates (Pty) Ltd

If you were a part of this project, and your company details are incorrect or missing – please notify the SAISC so that the error can be corrected.