not an easy book
The relieving arches in the Pantheon, in this case not originally part of the visual expression, similarly generate a wall structurally double-functioning. In this context the Roman basilica, Gaudi's Sagrada Familia, and Palladio's Il Redentore are totally different from the
Gothic basilica. In contrast to the segregated flying buttress, the Roman countervault spans as well as buttresses, and Gaudi's subtle invention of the tilted pier-buttress supports the weight of the vault as well as buttresses the thrust in one continuous form. Palladio's buttresses are also broken pediments on the facade. A flying buttress at S. Chiara in Assisi forms a portal for the piazza as well as a support for the building.
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