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Dimensions4288 x 2848
Original file size6.07 MB
Image typeJPEG
Color spaceProPhoto RGB
Date taken26-Dec-17 12:56
Date modified19-Jun-19 16:52
Shooting Conditions

Camera makeNIKON CORPORATION
Camera modelNIKON D300
Focal length24 mm
Focal length (35mm)36 mm
Max lens aperturef/2.8
Exposure54s at f/16
FlashNot fired
Exposure bias0 EV
Exposure modeManual
Exposure prog.Manual
ISO speedISO 200
Metering modePattern
Digital zoom1x
Pontcysyllte Aqueduct

Pontcysyllte Aqueduct

For the non-Welsh speaker, Pontcysyllte is pronounced ‘pont-kur-suck-tay’ and means ‘the bridge that connects’.
There are 18 piers 126ft high (38.4m) and 19 arches, each with a 45ft (13.7m) span.
To keep the aqueduct as light as possible, the slender masonry piers are partly hollow and taper at their summit.
The mortar was made of oxen blood, lime and water.
The aqueduct holds 1.5 million litres of water and takes two hours to drain.
The Pontcysyllte Aqueduct is 1,007ft (306.9m)long and spans the valley from Trefor (or Trevor) to Froncysyllte, with the River Dee running beneath it.
The work was undertaken by Thomas Telford and supervised by the more experienced canal engineer William Jessop.
The first stone was laid in July 1795. It was completed in 1805 using local stone.
At the centre, it reaches a height of 126ft (38.4m) from the river bed to the ironwork.
This is the largest aqueduct in Britain. It is fed by water from the Horseshoe Falls near Llangollen.
The water that feeds the canal runs through an iron trough that measures 11ft 10ins (3.6m) wide and 5ft 3ins (1.6m) deep.

http://www.wrexham.gov.uk/english/heritage/pontcysyllte_aqueduct/facts_and_figures.htm