| 词条 | Chirk Aqueduct |
| 释义 |
|name = Chirk Aqueduct |image = ChirkAqueductBelow.JPG |image_size = |image_caption = Chirk Aqueduct and the railway viaduct behind it |carries = Llangollen Canal |crosses = Ceiriog Valley |location = Chirk |os_grid_reference= SJ287373 |maintained = British Waterways |designer = Thomas Telford |material1 = Cast iron |material2 = Masonry |number_spans = Ten |piers_in_water = |mainspan = |length = {{convert|710|ft|m}} |width = |height = {{convert|70|ft|m}} |depth = |passable = No|traversable = Yes |towpath = East Side |clearance_above = |clearance_below = |begin = |complete = 1801 |open = |rebuilt = |heritage = |closed = |coordinates = {{coord|52.9282|-3.0622|display=inline,title}} |extra = }} Chirk Aqueduct is a {{convert|70|ft|m|adj=on}} high and {{convert|710|ft|m|adj=on}} long navigable aqueduct that carries what is now the Llangollen Canal across the Ceiriog Valley near Chirk, on the England-Wales border, spanning the two countries. HistoryThe aqueduct was designed by civil engineer Thomas Telford[1] for the Ellesmere Canal. The resident engineer was M Davidson who also acted as resident engineer on a number of Telford's other works.[1] The foundation stone was laid on 17 June 1796 and it was completed in 1801.[3] It has a cast iron trough within which the water is contained. The masonry walls hide the cast iron interior. The aqueduct followed Telford's innovative Longdon-on-Tern Aqueduct on the Shrewsbury Canal, and was a forerunner of the Pontcysyllte Aqueduct, also on the Llangollen Canal.[2] The aqueduct was briefly the tallest navigable one ever built, and it now is Grade II* listed in both England and Wales.[3][4] It forms part of the Pontcysyllte Aqueduct World Heritage Site.[4] DescriptionThe aqueduct consists of ten arches, each with a span of {{convert|40|ft|m}}. The water level is {{convert|65|ft|m}} above the ground and {{convert|70|ft|m}} above the River Ceiriog.[5] The stone work is yellow sandstone.[4] William Hazledine provided the ironwork for the aqueduct.[6] Originally built with iron plates only at the base of the trough, iron side plates were added to the aqueduct in 1870 to alleviate leakage.[7][12] The Chirk Tunnel starts at the north end of the Chirk Aqueduct, allowing the canal to continue on towards Llangollen.[4] A railway viaduct was built later alongside the aqueduct. It is slightly higher than the aqueduct.[8] See also{{Portal|UK Waterways}}
References1. ^1 {{Cite book|title=Man of Iron - Thomas Telford and the Building of Britain|last=Glover|first=Julien|publisher=Bloomsbury|year=2017|isbn=|location=London|pages=383}} 2. ^{{cite book|author=Samuel Smiles|title=Lives of the Engineers, with an Account of Their Principal Works|year=1861|publisher=J. Murray}} 3. ^{{NHLE |num=1295150 |desc=Chirk Aqueduct |grade=II* |accessdate=5 November 2015}} 4. ^1 2 3 {{cite book|title=Chirk Conservation Area: Draft Character Assessment & Management Plan|date=June 2014|publisher=Wrexham.gov.uk|url=http://www.wrexham.gov.uk/assets/pdfs/planning/conservation_area/chirknew_ca_mp.pdf|accessdate=7 April 2016|format=PDF}} 5. ^1 {{cite book|author=Samuel Smiles|title=The Life of Thomas Telford|year=2004|publisher=Kessinger Publishing|isbn=1-4191-6991-2}} 6. ^{{cite book|author=A. W. Skempton|title=A Biographical Dictionary of Civil Engineers in Great Britain and Ireland|year=2002|publisher=Thomas Telford|isbn=0-7277-2939-X}} 7. ^{{cite book|author=Roger Cragg|title=Wales and West Central England: Wales and West Central England, 2nd Edition|year=1997|publisher=Thomas Telford|isbn=0-7277-2576-9}} 8. ^1 {{Cite book|last=Quenby|first=Ron |title=Thomas Telford's Aqueducts on the Shropshire Union Canal|publisher=Swan Hill Press|year=1992 |isbn=1-8531-0246-6}} External links{{Commons category}}
11 : Bridges in Wrexham County Borough|Buildings and structures in Shropshire|Navigable aqueducts in Wales|Works of Thomas Telford|Bridges completed in 1801|Llangollen Canal|Ellesmere Canal|Grade II* listed buildings in Shropshire|Grade II* listed buildings in Wrexham County Borough|Listed bridges in Wales|Cast iron aqueducts |
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