Author(s)

M.G. D’Amelio & N. Marconi

Abstract

Technology and repairs in Castelli eponti di mastro Nicola Zabaglia (Rome, 1743) M.G. D'Amelio & N. Marconi Department of Civil Engineering University of Rome "Tor Vergata", Italy Abstract The construction of St. Peter's in Rome can be considered as having been completed at the end of the XVII century. Concurrently, with the closing of the Vatican building yard, a number of important actions to maintain the Basilica were started and continued for a long time up to the XIX century, on the vault and the dome firsr, on the porch and the obelisk later. Both editions dated 1743 and 1824 of the treatise Castelli e Ponti written by Nicola Zabaglia (1664-1750), the "sampietrino" building foreman, are an excellent compendium of technical and mechanical achievements of the Roman Baroque in the field of building construction. Due to the technical and operational difficulties encountered to carry out most of these repairs, it was necessary at that time to design and erect suspension scaffolds, either fix

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