seismic vulnerability of the masonry historical structures ...€¦ · saint george cathedral’s...
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Seismic vulnerability of the masonry historical structures
Ivo Caliò & Giuseppe Occhipinti
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A WORLD HERITAGE BUILDING THAT HAS TO BE PRESERVED
CONSIDERATION ON THE SEISMIC VULNERABILITY OF THE SAINT GEORGE CATHEDRAL’S MAIN DOME IN RAGUSA IBLA
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Rosario Gagliardi (Siracusa, 1698 – Noto, 1762)
San Giuseppe - Ibla San Giorgio - Ibla San Giorgio - Modica
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Courtesy of the Saint George’s Museum – Ragusa Ibla
Original Gagliardi’s drawing of the Saint George Cathedral’s plan 1744– Ragusa Ibla
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Courtesy of the Saint George’s Museum – Ragusa Ibla
Original Gagliardi’s drawing of the Saint George Cathedral 1744– Ragusa Ibla
53 years after the great earthquake
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Courtesy of the Saint George’s Museum – Ragusa Ibla
Original Gagliardi’s drawing of the Saint George Cathedral 1744– Ragusa Ibla
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Courtesy of the Saint George’s Museum – Ragusa Ibla
Original Gagliardi’s drawing of the Saint George Cathedral’s structures 1744– Ragusa Ibla
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1775
82 years after the great earthquake
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1775
0
1820
Arch. Rosario Gagliardi
1693
+82 years
Arch. Sebastiano Ittar(Catania, 1768 – Catania, 1847)
+127 years
Maestro (master builder) Carmelo Cutraro
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Maestro Cutraro took his inspiration from the Pantheon‘s geometry
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Saint George in Modica
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Courtesy of the Saint George’sMuseum – Ragusa Ibla
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Courtesy of the Saint George’s Museum – Ragusa Ibla
Original Gagliardi’s drawing of the Saint George Cathedral’s plan 1744– Ragusa Ibla
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Under stati loads Carmelo Arezzo di Trifiletti found out the sz
around of 1,4 Mpa = 14 kg/cm2
at the lower side of the columns
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