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Concept:
aesthetic requirement of building envelope
Aesthetic quality can also become a major factor in cost. Form, colour, texture and pattern can usually be varied over a wide range without affecting other requirements. But insistence upon a particular aesthetic feature or quality may make it difficult to satisfy the service requirements or may force unsatisfactory solutions.
Aesthetic considerations frequently become involved in other ways. For example, inadequacies in design may allow cracks to develop so that water-staining occurs, surfaces spall or finishes degrade. Thus the aesthetic qualities of a building will be more readily maintained when the basic requirements have been satisfied. (Source: Hutcheon 1963 R-143
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