12 September 2012 — 1 Bligh Street, Sydney, by architectus + ingenhoven architects, has been awarded the Milo Dunphy Award for Sustainable Architecture at the 2012 NSW Architecture Awards.

The jury citation said the building, owned by DEXUS Property and Cbus, and built by Grocon, had realised “considerable sustainability objectives”.

“The long curving façade generated by the ellipse responds to changing solar load by using a double skin vented cavity. The envelope strategy gives a clarity of expression to the

outside of the building while simultaneously providing excellent thermal performance and maximising views.

“Internally parts of the façade are capable of mixed mode ventilation with tenant fitout. The atrium continues external formal themes with curved glazing and glass lifts. The atrium is naturally ventilated but uses spill air from the floors as a heat reclaim.

“Services to the building comprise premium grade systems with chilled beam cooling and high levels of fresh air commensurate with its 6 Green Star Certified Rating. A tri-generation plant provides most of the heating, cooling and electrical needs of the building using gas as a low carbon fuel source.

“This system is ‘super charged’ with a roof-top solar thermal system. Visitor bike parking is provided in an easily accessible location at the entry to the car park, keeping the urban front uncluttered and enabling cyclists to enjoy convenient changing facilities and lockers.

“Healthy, durable and more sustainable materials satisfy sustainability objectives and are seamlessly integrated into the design. The attention to detail and architectural integration of sustainable features has provided Sydney with a world-class commercial building that is setting new standards in sustainable architecture for high rise buildings.”

Click here for a full list of winners.