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ˌsupereleˈvation
[super- 6 b, 13.]
†1. Elevation to a higher rank. Obs. rare—1.
1654tr. Scudery's Curia Pol. 166 If the Prince intend a super-elevation to any of his subjects.
2. The (amount of) elevation of the outer above the inner rail at a curve on a railway, or of one side of a road above another. Also transf. (see quot. 1930.)
1889G. Findlay Eng. Railway 54 To balance the centrifugal force of a train running round a curve, it is necessary for the outer rail on a curve to be raised somewhat above the inner rail, and the smaller the radius, and the higher the speed of the trains, the greater must be the super-elevation. 1896Westm. Gaz. 9 Oct. 5/1 The accident was aided..by..the superelevation of the left hand rail being only 21/4 inches instead of 3½, and therefore suitable for a speed of sixteen miles an hour only. 1906Daily Chron. 3 Aug. 5/6 The arch of the road is of too large a character, and the superelevation is on the wrong side of the road. 1930Engineering 14 Feb. 193/3 The spillway channels [of the dam] are curved, requiring large superelevation of the floor toward the outside.
3. Additional elevation.
190019th Cent. Apr. 641 In one well alone..no less than 8 feet of superelevation..were traversed before the alluvial deposit was reached. |