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  2. Swing bridge - Wikipedia

    en.wikipedia.org/wiki/Swing_bridge

    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.

  3. Swing-door operator - Wikipedia

    en.wikipedia.org/wiki/Swing-door_operator

    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 ...

  4. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    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.

  5. Bascule bridge - Wikipedia

    en.wikipedia.org/wiki/Bascule_bridge

    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.

  6. Vertical-lift bridge - Wikipedia

    en.wikipedia.org/wiki/Vertical-lift_bridge

    A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck. The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges. Generally speaking, they cost less to build for longer moveable spans. [1]

  7. Moveable bridge - Wikipedia

    en.wikipedia.org/wiki/Moveable_bridge

    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 ...

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  9. Sluice - Wikipedia

    en.wikipedia.org/wiki/Sluice

    The pressure difference on both doors is the same, but the surface area is not. This ensures that the opening force (on 5) overcomes the closing one (on 6), which causes the gate to turn clockwise and open. Flap sluice gate A fully automatic type, controlled by the pressure head across it; operation is similar to that of a check valve. It is a ...

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