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A loading gauge is a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads. Their purpose is to ensure that rail vehicles can pass safely through tunnels and under bridges, and keep clear of platforms, trackside buildings and structures. [1]
The gauge was known as "Texas gauge" while required by Texas law until 1875, [4] and used by the New Orleans, Opelousas and Great Western Railroad (NOO&GW) until 1872, and by the Texas and New Orleans Railroad until 1876. The New England railways were similarly standard-gauged in the 1870s.
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 St. Moritz–Corviglia funicular (upper section of 1,616 metres or 5,302 feet route-length only - lower section is 1,200 mm (3 ft 11 + 1 ⁄ 4 in ...
In terms of model railway operation, gauge 3 is the largest (standard gauge) scenic railway modelling scale, using a scale of 13.5 mm to the foot. The Gauge '3' Society represents this aspect of 2 + 1 ⁄ 2-inch gauge railway modelling with both electric and live steam operation. Gauge '3' corresponds to NEM II scale, also known as "Spur II" in ...
The first railroads in Canada in the 1830s were built to 1,435 mm (4 ft 8 + 1 ⁄ 2 in) and in 1847 the first 5 ft 6 in (1,676 mm) gauge line was built. After a Royal Commission, in 1851 the broad gauge, called the Provincial gauge, was adopted by the Province of Canada government as the standard gauge. However, in the 1870s, most Canadian ...
The main lines were built to steam railroad standards, but from Bellwood east the track was built to the much smaller “L” loading gauge. To fit that cars could only be 8 feet 7 inches (2.62 m) wide at the floor, about 55 feet (16.8 m) feet long, and needed radial couplers.
The minimum track spacing can be derived from the loading gauge. The European Berne Gauge has a width of 3,150 mm (10 ft 4 in). The minimal distance to structures on the side of the track is half of it but that is doubled again for double track lines. As the carriage can sway and bounce within the rail gauge, one adds 100 mm (3.9 in) and with a ...
The RA is primarily related to the axle load of the vehicle, although axle spacing is also taken into consideration. In practice it is the locomotive which governs where trains may operate, although many high capacity 4 axle wagons have a high RA when fully loaded. (When considering the operation of trains the loading gauge must also be ...