Metraipolis › archive › dc_ee765cd6800c

Aqueduct of the Gier — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-09T18:01:39.778Z
SHA-256 of the archived text: ac8b9122a2984314074c11bcbb7e0123c539e39736449fcda5890e2be87c4388
Stable URL of this page: https://metraipolis.com/documento/dc_ee765cd6800c

How to cite

Aqueduct of the Gier — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_ee765cd6800c (Metraipolis archive dc_ee765cd6800c, sha256 ac8b9122a2984314074c11bcbb7e0123c539e39736449fcda5890e2be87c4388)

BibTeX

@misc{dcee765cd6800c,
  title = {Aqueduct of the Gier — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_ee765cd6800c; sha256 ac8b9122a2984314074c11bcbb7e0123c539e39736449fcda5890e2be87c4388},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

The Aqueduct of the Gier (French Aqueduc du Gier) is an ancient Roman aqueduct probably constructed in the 1st century AD to provide water for Lugdunum (Lyon), in what is now eastern France. It is the longest and best preserved of four Roman aqueducts that served the growing capital of the Roman province of Gallia Lugdunensis. It drew its water from the source of the Gier, a small tributary of the Rhone, on the slopes of Mont Pilat, 42 km (26 mi) south-west of Lyon. Following a sinuous path, at 85 km (53 mi) the aqueduct of the Gier is the longest known of the Roman aqueducts. Its route has been retraced in detail, following the numerous remains. Leaving the uplands of the Massif du Pilat, department of the Loire, the aqueduct hugs the surface relief and crosses the department of the Rhone, passing through Mornant, Orliénas, Chaponost and Sainte-Foy-lès-Lyon to terminate at Lyon. In its extent, it draws upon the whole repertory of Roman techniques of aqueduct building, taking a slope that averages 0.1%, or a meter every kilometer. There are 73 km (45 mi) of covered ditches laid with a concrete culvert 3 m (9.8 ft) high and 1.5 m (4.9 ft) wide, which is sunk as deep as 4 m (13 ft) beneath the land surface. The aqueduct passes through 11 tunnels, one of which, near Mornant, is 825 m (2,707 ft) in extent. Access for cleaning and repairs was through manholes at 77 m (253 ft) distances. There are some thirty stretches in the open air. There are ten stretches raised on walls and arches, which provide the most spectacular visible remains of the aqueduct (illustrations). Four inverted siphon tunnels cross the particularly deep and wide river valleys of the Durèze, the Garon, the Yzeron and the Trion on pipe bridges raised on high arches. In these, water filled a sunken tank tower (castellum) on the brim of a slope. The tank effected a transition between open channel flow and a lead pipeline. From the castellum water was carried, now pressurized, in a set of airtight lead pipes laid side by side, with soldered joints, down the valley slope, across a bridge spanning the river—whose piers and arches are the most notable remains of the system—and up the facing slope, to a tank slightly lower than the head tank, losing just a little hydraulic head in the process. The inverted siphons obviated the bridging of deep valleys with arcade upon arcade of arches, as at Pont du Gard, which marks the limit of such a system.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Aqueduct of the Gier» — https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier
Wikidata Q3067: «antico acquedotto romano in Francia» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q3067
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Aqueduct_of_the_Gier?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1375648003, consultata il 2026-11-09T17:58:35.233Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 17b224f24f2ed74987970c6a042757509e04639d4e4bb027f35a262f9170aded