Evolutionary Optimisation of Façade Design: A New Approach by Giovanni Zemella

By Giovanni Zemella

Optimization strategies provide enormous strength for the advance of performance-driven layout, due to the fact that they permit the adoption of an holistic strategy. this may bring about nice benefits: optimum layout ideas will be appropriately pointed out provided that all standards are thought of even as, instead of individually. There are obstacles which impede optimization from being utilized to development layout: a technological barrier (applying the algorithms isn't effortless and will be rather time-consuming) and a cultural one (architects and engineers are required to alter their views because the layout strategy needs to be dealt with in a brand new way). This booklet explores those limitations from the point of view of either engineers and designers, and proposes a metamorphosis within the attitudes of those “actors”: an engineer and an architect enhance a conversation which is helping them comprehend every one other’s point of view; during this means they locate how they need to either make a step forward.

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Extra info for Evolutionary Optimisation of Façade Design: A New Approach for the Design of Building Envelopes

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But everything becomes much more complicated if we are dealing with criteria which are significantly different. For example, if we wanted to run a singleobjective optimisation where the criteria are energy consumption and internal comfort, we would have to think harder in order to find a common denominator. A possibility is to compare options in terms of cost: for energy, as we did when we assumed the corresponding carbon emission, it is relatively straightforward to assess reasonable values of corresponding costs.

The idea is that the research starts in a completely random way: some possible solutions are picked within the so-called research space. I want to stress the fact that these starting points are not chosen by the design team (who defines only the limits of the research space and the objective function), but are randomly selected: this is very important because only in this way it is possible to explore options that would normally be excluded a priori. These selected options are analysed and the corresponding values of the objective function(s) are calculated; in this way it is possible to start having an idea of some trends of how the objective function varies with the parameters describing the different façade options.

Whether traditional or integrated, done by a single individual or in a working team, the design should be promoted not by a person (or a group of people) but by a will, a desire, or what I call the Idea. This shouldn’t be mistaken for invention, though. The Idea I’m talking about is a sort of flexible concept (which is spatial rather than formal or architectural). I would say it’s more a question than a solution. You don’t look for it, you just find it. In the integrated design, the Idea becomes a catalyst that gathers the different people involved in the team.

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