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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.
Swing side, door mounted sensor—mounted on the swing side of the door itself, used as the door is opening to detect a user in the way of the opening door. In that case, the operator stops the door. The sensitivity of infrared sensors must be reduced at the end of the opening angle, if it starts seeing a wall next to the door, so it may not ...
To conform to these regulations the gate system must be checked with a calibrated force tester and the full results kept in a technical file for 7 years. If the gate is not tested it does not comply. Most gate kits can be fitted with safety equipment so that these limits are achieved and so cover that part of EN13241-1.
The bridge carries the A63 road through the south of the city connecting the west and east regions of Hull. Designed by the firm of Freeman Fox and Partners, with engineering undertaken by Cleveland Bridge, it was the largest swing bridge in Britain when it was opened in 1980. The bridge was expected to carry 30,000 vehicles a week, but by 2004 ...
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.
The bridge is a truss bridge with an approximately 100-foot span. [7] To open the bridge for marine vessels, an electric motor drives a pinion gear which engages a ring gear in the base of the bridge. If the electric motor is not working, the bridge can also be opened manually using a large wrench (approx. 8' DEEP socket with an 8' long handle).
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