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Oregon's Dads' Gates are large wrought iron gates that are located on 11th Ave. E. between Kincaid St. and Franklin Blvd. in Eugene, Oregon at the entrance to the University of Oregon campus. At their beginning, Dads' Gates were supposed to offer one of the most spectacular entrances to a campus found anywhere in the country.
With lightweight aluminium gates, meeting these force limitation guidelines becomes much more achievable, as they require less force to open and close compared to heavier materials such as wrought iron or steel. Another advantage of aluminium gates is their compatibility with brushless motor operators.
Wrought iron is an iron alloy with a very low carbon content (less than 0.05%) in contrast to that of cast iron (2.1% to 4.5%). It is a semi-fused mass of iron with fibrous slag inclusions (up to 2% by weight), which give it a wood-like "grain" that is visible when it is etched, rusted, or bent to failure.
There are also wrought iron gates by Bakewell at the Derby Industrial Museum, and ironwork by him in a number of churches in Derbyshire towns and villages: Alvaston, Ashbourne, Borrowash, Duffield, Etwall, Foremark, Radbourne. In Leicestershire at Staunton Harold church, a metal screen by Bakewell can be seen.
Early tilting weirs were constructed from wrought iron and wood. The Lanark hydro-electric plant was built from 1924 to 1927. It has three pivoting counterbalanced gates or tilting weirs. A mechanical tilting weir that moved the paddles on a central axis was patented by WGJ De Wit in 1988 [6]
The tenons of the gates at Balawat were sheathed with bronze (now in the British Museum). These doors or gates were hung in two leaves, each about 2.54 m (100 in) wide and 8.2 m (27 ft) high; they were encased with bronze bands or strips, 25.4 cm (10.0 in) high, covered with repoussé decoration of figures. The wood doors would seem to have ...