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The origin of the term arris is from the Latin arista, meaning the beard or the ear of grain or the bone of a fish. See also arête. An arris rail is a structural element, whose cross section is a 45 degree isosceles right angled triangle. Arris rails are usually made of wood, and are manufactured by cutting a length of square-section timber ...
Arris A sharp edge created when two surfaces converge; this includes the raised edge between two flutes on a column or pilaster, if that edge is sharp. Arris Rail A type of rail, often wooden, with a cross-section resembling an isosceles triangle. [1] Arrowslit A thin vertical aperture in a fortification through which an archer can launch arrows.
Rail transport terms are a form of technical terminology applied to railways. Although many terms are uniform across different nations and companies, they are by no means universal, with differences often originating from parallel development of rail transport systems in different parts of the world, and in the national origins of the engineers and managers who built the inaugural rail ...
The agency which oversees rail operation regulations and safety requirements for U.S. freight, passenger and commuter rail operations [104] Filet Converting a double-stack container train to single stack by removing the top layer of containers, allowing the rest of the train to proceed along track that lacks double stack clearance. The removed ...
Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents.
The group of rail vehicles making up a train, or more commonly a group of locomotives connected together for multiple-unit (MU) operation [32] [failed verification] Four foot The area between the running rails of a standard-gauge track; the actual distance is 4 ft 8 + 1 ⁄ 2 in (1,435 mm). See also six-foot and ten-foot. [23]: 141 [55]
Greek Doric columns had no base, and this prevented the flutes, which ended in a sharp arris, being worn down by people brushing past. [3] The flutes continue right down to the base of the column, [21] and at the top usually pass through three very narrow bands cut into the stone before reaching the base of the capital, where the shaft swells ...
A fence is a structure that encloses an area, typically outdoors, and is usually constructed from posts that are connected by boards, wire, rails or netting. [1] A fence differs from a wall in not having a solid foundation along its whole length. [2] Alternatives to fencing include a ditch (sometimes filled with water, forming a moat).