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Toggle Measurement of a track subsection. ... An all-weather running track is a rubberized, ... Aerial view of a standard 400-metre running track.
The measurement of uniformity is done using a predefined length of string line (normally the same length used in horizontal alignment) along the track. If the midpoint of the measurement has higher elevation, it is called hump deviation. On the other hand, if the midpoint has lower elevation, it is called dip deviation. [9]
Originally, various track gauges were used in the United States.Some railways, primarily in the northeast, used standard gauge of 4 ft 8 + 1 ⁄ 2 in (1,435 mm); others used gauges ranging from 2 ft (610 mm) to 6 ft (1,829 mm).
Cross-section of 4-rail dual-gauge track (standard and metre gauge/ narrow gauge) (click to enlarge) Cross-section of Australian dual-gauge track – 1600 mm (5 ft 3 in) and 1435 mm (4 ft 8 + 1 ⁄ 2 in) gauges (click to enlarge) Mixed gauge track at Sassari, Sardinia: 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge and 950 mm (3 ft 1 + 3 ⁄ 8 in)
See Category:Standard gauge railways: Standard gauge is defined both in metric and in imperial units. It is the most widely-used gauge worldwide, ab out 60% of the world uses this track. [92] 1,440 mm 4 ft 8 + 11 ⁄ 16 in: Switzerland
2. 200s. This simple interval workout will get you to five to six miles on the track. Trade off between running 200 meters slightly faster than your mile pace and 200 meters of easy recovery.
The American gauges converged, as the advantages of equipment interchange became increasingly apparent. Notably, all the 5 ft (1,524 mm) broad gauge track in the South was converted to "almost standard" gauge 4 ft 9 in (1,448 mm) over the course of two days beginning on 31 May 1886. [21] See Track gauge in the United States.
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