Civil Engineering heritage: Scotland - Lowlands and Borders
Date 2007
Event ID 602851
Category Descriptive Accounts
Type Publication Account
Permalink http://canmore.org.uk/event/602851
This aqueduct, erected by May 1822, carries the feeder channel for the Union Canal over the Almond. The trough aqueduct is of cast-iron, 80 ft clear span, 6 ft wideand 11 ft 6 in. high at the centre. The trough is of 0.625 in. thick iron plate with upturned 3 in. flanges across the bottom, and the waterway is 3 ft deep.
The cast-iron trough in addition to acting as a beam is also designed to function as a flat arch and there are radiating 3 in. flange joints on the trough side walls. The lines of the flanges when produced meet at a common point below the river bed at mid-span, the radius of the arch being 80 ft. Bearers span across the top flanges of the trough to form a footway.
The engineer was Hugh Baird and the ironfounder, Craven, Whitaker & Nowell.
R Paxton and J Shipway 2007
Reproduced from 'Civil Engineering heritage: Scotland - Lowlands and Borders' with kind permission of Thomas Telford Publishers.
