For the Quebec politician, see Louis George Harper. For the American football coach, see Louis J. Harper.
1895 bridge over the River Wye at Sellack Boat, near Ross-on-WyeName plate on Sellack Boat bridge
Louis Harper (23 April 1868[1] – 26 January 1940) was a civil engineer from the north-east of Scotland who designed a number of suspension footbridges towards the end of the 19th century.[2]
Harper was born in Aberdeen, Aberdeenshire,[3] to John Harper and Margaret Ross.[4] His father came from Turriff in Aberdeenshire, and worked as a fencer in Edinburgh and Glasgow before starting the family firm in Aberdeen in 1856, which became Harpers Ltd in 1885. John Harper patented a mechanism for straining wire, used both to make fences and later also for the cables of bridges. His son John took charge of the business until 1887, while his second son Louis served an apprenticeship with Jenkins & Mar, Civil Engineers.[2]
Louis set up his own firm in 1889, later collaborating with the contractors James Abernethy & Co. In addition to his bridge projects, he assisted Aberdeen Council in surveying their town water scheme. He became an Associate Member of the Institution of Civil Engineers in 1893, resigning in 1921.[5]
The firm's early bridges included suspension bridges at Aboyne, spanning 300 feet (91 m), and at Shocklach in Cheshire, both built in 1871. Neither bridge exists today. The early bridges had wooden towers, although these were replaced in later bridges by structural steel or cast iron members.[2]
He died in Aberdeen in 1940.[6]
^UK, Civil Engineer Records, 1820-1930
^ abcHarper, D.R., Day, T.M. (1 May 2010). "The 19th-Century Suspension Footbridges of Harpers of Aberdeen". Industrial Archaeology Review. 32 (1): 21–34. doi:10.1179/174581910X12680800821413. S2CID 110390297.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^1901 Scotland Census
^Scotland, Select Births and Baptisms, 1564-1950
^Archives of the Institution of Civil Engineers, including Louis Harper's application for membership as A.M.I.C.E.
^England & Wales, National Probate Calendar (Index of Wills and Administrations), 1858-1966, 1973-1995
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