Evidence Based Design

Similar to the previous discussion on optimal daylight, designing for natural ventilation must also consider glazing performance, daylight ingress and access to views as these three elements are interrelated and have a strong bearing on each other and ultimately the overall energy performance and occupant comfort.

When outside conditions or the internal activities prevent utilising natural ventilation, active mechanical systems are needed to meet the heating/cooling and ventilation requirements. Therefore it is necessary to select an appropriate mechanical system that can be integrated with the passive design elements. Ideally the system should also be integrated with low grade renewable energy sources and sinks to further minimise operational energy consumption.


Successful reconciliation of environmental and commercial outcomes can only be achieved by careful consideration of key design, construction and operational variables. We argue that this can only be achieved by considered and comprehensive response to the design brief and external environmental conditions. Early stage quantitative analyses form the basis of such a response. Elements of the evidence emerging from such analyses then have to be translated into an integrated design response. Past experience also suggests that integrating input from key stakeholders and design and construction team early at the concept development stage also reduces the overall cost of the project.

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August 26, 2011

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A good design is a sustainable design
If we define a good design as an efficient design which minimises the use of materials and resources during construction and operation, while achieving the desired outcome, then we are on the way to achieving sustainable design. Sustainability will be further enhanced by maximising the use of renewable/recyclable materials and resources.

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