Normally used to characterize the intrados of the domes, are constructed in opera, integral with the wall structure of the dome. They are in geometric characters, which are repeated regularly. In the case of San Carlino dome, the intrados is divided into 4 levels of octagons and crosses, alternating between them and 4 intermediate hexagonal levels.
Published in Chapter:
Drawing, Geometry and Construction: The Dome of San Carlino Alle Quattro Fontane (1634-1675) by Francesco Borromini
Marco Canciani (University of Roma Tre, Italy)
Copyright: © 2016
|Pages: 34
DOI: 10.4018/978-1-5225-0029-2.ch025
Abstract
The link between the design drawing to an architectural work, sometimes goes through the definition of geometric paths which establish alignments, proportions, correspondences. The comparison of the geometric construction of survey data of an architecture and design data is very important for understanding the original design idea, highlighting not only the artist's modus progettandi, but also matches, modifications or changes respect of precisely geometric paths and its building architecture. In these studies, the church of San Carlo alle Quattro Fontane in Rome, by Francesco Borromini, is an exemplar case. The project of the church, built between 1638 and 1675 and characterized by a coffered vault with an oval planimetric shape, is documented by a consistent corpus of Borromini drawings. This research, based on survey data, can allow to make new contributions to Borromini work and formulate new hypotheses regarding his construction practice.