lift bridge - meaning and definition. What is lift bridge
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What (who) is lift bridge - definition

MOVABLE BRIDGE IN WHICH A SPAN RISES VERTICALLY WHILE REMAINING PARALLEL WITH THE DECK
Lift bridges; Liftspan bridge; Lift bridge; Lift Bridge; Vertical lift bridge; Lift-bridge

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.
Lift (force)         
  • Airflow separating from a wing at a high angle of attack
  • Control volumes of different shapes that have been used in analyzing the momentum balance in the 2D flow around a lifting airfoil. The airfoil is assumed to exert a downward force −L' per unit span on the air, and the proportions in which that force is manifested as momentum fluxes and pressure differences at the outer boundary are indicated for each different shape of control volume.
  • Lift is defined as the component of the [[aerodynamic force]] that is perpendicular to the flow direction, and drag is the component that is parallel to the flow direction.
  • An illustration of the incorrect equal transit-time explanation of airfoil lift.<ref name="nasa_equal_transit"/>
  • streamlines]].
  • Illustration of the distribution of higher-than-ambient pressure on the ground under an airplane in subsonic flight
  • isobars]] of equal pressure along their length. The arrows show the pressure differential from high (red) to low (blue) and hence also the net force which causes the air to accelerate in that direction.
  • Streamlines and streamtubes around an airfoil generating lift. Note the narrower streamtubes above and the wider streamtubes below.
FORCE; AERODYNAMICS TERM
Dynamic lift; Lift force; Lift Force; Useful lift; Lift equation; Aerodynamic lift; Lift (physics); Lift (fluid mechanics); Lift distribution; Equal transit-time fallacy; Equal transit time fallacy; Lifting force; Lift vector; Lift (airplane); Three-dimensional flow; Lift (aerodynamics)
A fluid flowing around an object exerts a force on it. Lift is the component of this force that is perpendicular to the oncoming flow direction.
Patient lift         
ASSISTIVE DEVICE IN HEALTH CARE
Sit-to-stand lift; Patient hoist; Hoyer lift; Sling lift
A patient lift (patient hoist, jack hoist, hydraulic lift) may be either a sling lift or a sit-to-stand lift. This is an assistive device that allows patients in hospitals and nursing homes and people receiving home health care to be transferred between a bed and a chair or other similar resting places, by the use of electrical or hydraulic power.

Wikipedia

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. The counterweights in a vertical lift are only required to be equal to the weight of the deck, whereas bascule bridge counterweights must weigh several times as much as the span being lifted. As a result, heavier materials can be used in the deck, and so this type of bridge is especially suited for heavy railroad use. The biggest disadvantage to the vertical-lift bridge (in comparison with many other designs) is the height restriction for vessels passing under it, due to the deck remaining suspended above the passageway.

Although most vertical-lift bridges use towers, each equipped with counterweights, some use hydraulic jacks located below the deck. An example is the 52-foot (15.85 m) span bridge at St Paul Avenue in Milwaukee (see also table bridges). Another design used balance beams to lift the deck, with pivoting bascules located on the top of the lift towers. An example of this kind was built at La Salle in Illinois, United States.

Examples of use of lift bridge
1. The director of the New Jersey chapter of the Lincoln Highway Association said the structure was built shortly after World War II and is a vertical–lift bridge about 300 feet long that works like an elevator suspended between two columns.
2. The director of the New Jersey chapter of the Lincoln Highway Association said the structure was built shortly after World War II and is a vertical–lift bridge about 300 feet in length that works like an elevator suspended between two columns.