VISION Issue 33 | Page 30

VISION 33—OFF THE GRID You don’t end up with such a result with the simple click of a button. We originally struggled to come up with the final built form, during the early days we played with a complex extruded form through our fairly fine 3D technical software programs. I recall saying to David Moyle: "This is going to be a monster to build. I don't know how you're going to actually build it." He said, "Don't worry. You design it, and we'll build it." How quickly did the idea come about? At one stage, it was very much a confused origami type structure. Personally I think it was a little too over the top. It metamorphosed into what you see today essentially, which is a simplified form, nevertheless with a number of challenging construction issues. It's a kaleidoscopic result with plenty of geometry in the glass. Were you concerned the result might all end up a confusing patchwork? At one stage we were pushing the boundaries too far. It wasn't hitting the mark because we were trying too hard. There were too many materials, different shapes and angles and it lost its effect. Your eye didn't sit comfortably with it. What were some of the practical construction realities? Working up so many angles and handling the difficulty of so much complicated form-work. Then there is the complexity of the detailing. Much of the glass, while large, is very simply rebated into the concrete form-work. What should be easy is made harder by the fact that concrete is so unforgiving. Anyone who works with concrete will know how difficult it is to achieve that precision of sharp edges and exposed aggregate. What about the glazing fabricators and window-makers? David Moyle of BCM investigated and invested a significant effort to see what was possible with glass. Mostly suppliers said , “No, not interested. It's too hard.” He ended up at Viridian, Sydney, who could meet his needs and deliver glass to his demanding specifications. It was an absolute challenge to get the glass to its maximum spans to fit the style and design we came up with. I‘m glad he got the answers. How did you arrive at a fit whereby the glass appears millimetre perfect? We began with the idea of templates to be sent to the glazing fabricator. David decided to interactively survey the facades and provide a digital format with accurate dimensions for each ‘window’ surveyed on site and in situ once the concrete was formed. Once the key elevations were surveyed, the precise specifications were sent to the glaziers. 30