30/09/2015 1 Fare clic per modificare lo stile del titolo dello schema Mario Paolo Petrangeli 1 The Roman Bridges Mario P. Petrangeli Mario Paolo Petrangeli 2 The importance of the bridges at roman time: (i) to facilitate the troop movements The right abutment still in place The bridge (21 wooden arches spanning 51 m each) built by Traiano (53-117 AC) to cross the Danube and conquer the Dacia ( the Balcan area) Credits: several images come from "Vittorio Galliazzo “I Ponti Romani” http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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30/09/2015
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Fare clic per modificare lo stile del titolo dello schema
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The Roman Bridges
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The importance of the bridges at roman time: (i) to facilitate the troop movements
The right abutment still in place
The bridge (21 wooden arches spanning 51 m each) built by Traiano (53-117 AC) to cross the Danube and conquer the Dacia ( the Balcan area)
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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The importance of the bridges at roman time: (ii) to cross deep valleys with aqueducts
Tarragona (11+25 arches) Segovia (119 arches )
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Bridge of ships
Marco Varrone ( 116-27 BC) planned to cross the Adriatic sea from Otranto to Apollonia (Albania) (about 50 km)
Caligola ( 1° century AC ) built a bridge of ships about 5000 m long crossing the sea from Baia to Pozzuoli (Naples).
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Wooden bridges
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A modern italian railway bridge
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Wooden trestle bridge, 400m long,
crossing the Rhine river
built by Caesar (55 BC) in 10 days
Pontes tumultuarii (Temporary bridges)
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Pontes longi ( Long Bridges )
To cross marshes or very soft soils
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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1 The main arch
2 Secondary arch
3 Lateral retaining wall
4 Pier
5 Foundation
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Pile-drivers
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Foundations
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Water-scooping machines
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Ponte Cestio
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Scheme of the original single arch CESTIO bdg foundations
A
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Ponte Emilio
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Piers shape
Upstream face: mainly with cutwater, sometime circular Downstream face: circular or plane
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Type of walls: grande apparecchio (large dimension blocks )
Arcaic polygonal work
“Third generation” polygonal work
Square units work
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A Roman bridge widened and still in service for a national road (Tiburtina)
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Opus reticolatum Opus incertum
Type of walls: piccolo apparecchio (small dimension blocks )
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Opus vittatum Opus mixtum
Type of walls: piccolo apparecchio (small dimension blocks )
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Different types of arch
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Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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One of the oldest example of Etrurian Bridge (Ponte Camillario ) near Viterbo
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Alcàntara Spain- 103-104 A.C.
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Salamanca
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Alconétar
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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A modern version of an ancient shape
The central part of the arch supports directly the road
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Details to handle and to connect stone blocks
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Types of centreing
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Ponti Fabricio e Cestio on the back; the ruins of
ponte Emilio on the left
Ponte Fabricio
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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Ponte S. Angelo
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Ponte S. Angelo
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
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THANK YOU FOR YOUR KIND ATTENTION
A fascinating history lasting more than two thousands years
Ponte Fabricio
Ponte sul PO
Credits: several images come from "Vittorio Galliazzo “I Ponti Romani”http://www.traianvs.net/pdfs/2004_01_galliazzo.pdf
