Pritchard, Thomas Farnolls

Pritchard, Thomas Farnolls
SUBJECT AREA: Civil engineering
b. probably Shrewsbury, England
d. 23 December 1777 Shrewsbury, England
English architect and builder renowned for designing the first cast-iron bridge in England.
In 1775 Pritchard designed the Ironbridge bridge, which was built over the River Severn by Abraham Darby of Coalbrookdale in 1777–9. It is constructed of five parallel arch ribs almost 200 ft (61 m) in length. The spandrels are filled by circles and ogee arch heads, while the roadway above is made from cast-iron plates 2½ in. (64 mm) thick. The bridge, which weighs 400 tons, was made in the Coalbrookdale foundry and took only three months to erect.

Biographical history of technology. - Taylor & Francis e-Librar. . 2005.

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