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Minimum-gauge railways are railways with track gauges smaller than those of narrow-gauge railways, primarily designed for light, industrial, or tourist transportation. The most common gauges for minimum-gauge railways include: 15 in (381 mm) [1] 400 mm (15 + 3 ⁄ 4 in) [2] 16 in (406 mm) 18 in (457 mm) 19 in (483 mm) 500 mm (19 + 3 ⁄ 4 in ...
See 8 + 1 ⁄ 4 in (210 mm) gauge ridable miniature railways: 229 mm 9 in: See 9 in (229 mm) gauge ridable miniature railways: England: Railway built by minimum gauge pioneer Sir Arthur Heywood, later abandoned in favor of 15 in (381 mm) gauge. 240 mm 9 + 7 ⁄ 16 in: See 9 + 7 ⁄ 16 in (240 mm) gauge ridable miniature railways: 241 mm 9 + 1 ...
A structure gauge, also called the minimum structure outline, is a diagram or physical structure that sets limits to the extent that bridges, tunnels and other infrastructure can encroach on rail vehicles.
Opening in 1825, the initial gauge of 4 ft 8 in (1,422 mm) was set to accommodate the existing gauge of hundreds of horse-drawn chaldron wagons [14] that were already in use on the wagonways in the mines. The railway used this gauge for 15 years before a change was made, debuting around 1850, to the 1,435 mm (4 ft 8 + 1 ⁄ 2 in) gauge.
A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than 1,435 mm (4 ft 8 + 1 ⁄ 2 in) standard gauge. Most narrow-gauge railways are between 600 mm ( 1 ft 11 + 5 ⁄ 8 in ) and 1,067 mm ( 3 ft 6 in ).
In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
The TSI Rolling Stock (2002/735/EC) has taken over the UIC Gauges definitions defining Kinematic Gauges with a reference profile such that Gauges GA and GB have a height of 4.35 m (14 ft 3 in) (they differ in shape) with Gauge GC rising to 4.70 m (15 ft 5 in) allowing for a width of 3.08 m (10 ft 1 in) of the flat roof. [7]
Two foot and 600 mm gauge railways are narrow gauge railways with track gauges of 2 ft (610 mm) and 600 mm (1 ft 11 + 5 ⁄ 8 in), respectively. Railways with similar, less common track gauges, such as 1 ft 11 + 3 ⁄ 4 in ( 603 mm ) and 1 ft 11 + 1 ⁄ 2 in ( 597 mm ), are grouped with 2 ft and 600 mm gauge railways.