Search results
Results from the WOW.Com Content Network
The minimum railway curve radius is the shortest allowable design radius for the centerline of railway tracks under a particular set of conditions. It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks , determines the ...
Due to the limitation of how specific train equipment can make a turn at maximum speeds, there is a limitation of minimum curve radius to control the sharpness of all curves along a given route. Although most countries use radius for measurement of curvature, the term maximum degree of curvature is still used outside North America such as in ...
Radius of curvature, the reciprocal of the curvature in differential geometry Minimum railway curve radius , the shortest allowable design radius for the centerline of railway tracks Topics referred to by the same term
Tram tires are generally narrower than train tires. Trams use bigger crossing angles and tighter curve radii are more likely than for train tracks. To cope with this difficulty the wheels of trams temporarily transfer the weight of the tram onto the flange to reduce wear on both the frog point and the horizontal surface of the tram wheels.
With 100 m (328.08 ft) radius curves. 1 in 16.6 (6.0%) Terni–Perugia–Sansepolcro railway (Perugia Sant'Anna branch) Steepest standard gauge line in Italy 1 in 17 (5.89%) Madison Incline, Madison, Indiana, United States: Steepest standard gauge, line haul railroad in North America. [17]
A transition curve (also, spiral easement or, simply, spiral) is a spiral-shaped length of highway or railroad track that is used between sections having different profiles and radii, such as between straightaways and curves, or between two different curves.
If the curve needs to be of a desired constant radius, which will usually be determined by physical obstructions and the degree of cant which is permitted, the versine can be calculated for the desired radius using this approximation. In practice, many track curves are transition curves and so have changing radii.
A CSX freight train on a superelevated curve. Curve resistance depends on various factors, the most important being the radius and the superelevation of a curve. Since curves are usually banked by superelevation, there will exist some speed at which there will be no sideways force on the train and where therefore curve resistance is minimum. At ...