lower flange of girder

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Dee bridge disaster — Coordinates: 53°10′59″N 2°53′42″W / 53.183°N 2.895°W / 53.183; 2.895 … Wikipedia
Rail profile — Rail from 1896 Cross sections of flat bottomed which can rest directly … Wikipedia
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium
Rail tracks — are used on railways (or railroads), which, together with railroad switches (or points), guide trains without the need for steering. Tracks consist of two parallel steel rails, which are laid upon sleepers (or cross ties) that are embedded in… … Wikipedia
Inverythan rail accident — The Inverythan rail accident was a railway accident which occurred, on 27th November 1882, at Inverythan, Aberdeenshire, Scotland. The accident happened on the Great North of Scotland Railway line from Aberdeen to MacDuff, on a railway bridge… … Wikipedia
Orthotropic deck — For other uses, see Deck. Fabricating an orthotropic deck section An orthotropic bridge or orthotropic deck is one whose deck typically comprises a structural steel deck plate stiffened either longitudinally or transversely, or in both directions … Wikipedia

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