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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 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 ...
The code also defines the clearance that is shorter than the physical clearance to account for sag curves, bridge deflection and expected settlements with a recommendation of minimum clearance of 5 metres (16 ft 5 in). [2] In UK, the "standard minimum clearance" for structures over public highways is 16 feet 6 inches (5.03 m). [3]
In Erie, Pennsylvania, the 6 ft (1,829 mm) Erie Railroad terminated while adjacent railroads used 4 ft 10 in (1,473 mm) gauge, also known as "Ohio gauge." That led to the Erie Gauge War in 1853–54, when the Erie mayor and citizens temporarily prevented a gauge standardization, because there would then be less trans-shipping work and through ...
The Columbus & Ohio River Railroad (reporting mark CUOH) is a railroad in the U.S. state of Ohio owned by Genesee & Wyoming Inc. The main line, formerly part of the Pennsylvania Railroad's "Panhandle," was acquired from Conrail in 1992.
Track gauge or rail gauge (also known as track gage in North America [8]) is the distance between the inner sides (gauge sides) of the heads of the two load bearing rails that make up a single railway line. Each country uses different gauges for different types of trains.
The clearance space between a train and the tunnel is often small. Pictured is a London Underground Northern line 1995 Stock train emerging from the tunnel north of Hendon Central station. A loading gauge is a diagram or physical structure that defines the maximum height and width dimensions in railway vehicles and their loads.
A broad-gauge railway is a railway with a track gauge (the distance between the rails) broader than the 1,435 mm (4 ft 8 + 1 ⁄ 2 in) used by standard-gauge railways.. Broad gauge of 1,520 mm (4 ft 11 + 27 ⁄ 32 in), more known as Russian gauge, is the dominant track gauge in former Soviet Union countries (CIS states, Baltic states, Georgia, Ukraine) and Mongolia.