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Such a bridge would be particularly suited for use in the confines of a canyon, where the road is brought in the upstream direction down one side, crosses a stream, and turns back to a downstream direction on the other side. By placing a large portion of the turn on the bridge, rather than on the approaches, the turn may be made more gentle ...
A swing bridge (or swing span bridge) is a movable bridge that can be rotated horizontally around a vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right.
A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats [1] or barges. [2] In American English, the term is synonymous with drawbridge , and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which drawbridge refers to only a ...
The bridge crosses the western terminus of the Potomac Heritage Trail and the George Washington Memorial Parkway on the Virginian side of the Potomac River. On the Maryland side, the bridge crosses over MacArthur Boulevard, the Clara Barton Parkway and the Chesapeake and Ohio Canal. Lock 13 (Seven Locks 6) of the canal is underneath the bridge.
Animation showing the operation of a drawbridge. A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the ...
Many of the houses were later merged, into 91. In the seventeenth century, almost all had four or five storeys. All the houses were shops, and the bridge was one of the City of London's four or five main shopping streets. The three major buildings on the bridge were the chapel, the drawbridge tower and the stone gate.
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In right-hand traffic countries, revolving doors typically revolve counter-clockwise (as seen from above), allowing people to enter and exit only on the right side of the door. In left-hand traffic countries such as Australia and New Zealand, [ 3 ] revolving doors revolve clockwise, [ 4 ] but door rotations are mixed in Britain. [ 5 ]