Manual of Railway Engineering, for the Field and the OfficeW. McGee, 1874 - 181 páginas |
Otras ediciones - Ver todas
Manual of Railway Engineering for the Field and the Office Charles Philip Cotton Vista completa - 1874 |
Manual of Railway Engineering for the Field and the Office Charles Cotton Vista previa limitada - 2023 |
Manual of Railway Engineering for the Field and the Office Charles Cotton Vista previa limitada - 2023 |
Términos y frases comunes
abutments alteration angle arch ballast Board of Trade Book of Reference bridge centre line CLAUSE contract contractor counterforts course cross-girders cross-sections cubic foot cubic yard culverts curve datum line depth dimensions drains drawing dry stone wall dwarf walls embankment engineer-in-chief enlarged plan estimate excavation extrados fences formation level four inches furlongs girders given gradients ground height inches thick inclination laid land level crossing limits of deviation line of railway lineal yard lithographer marked measured mile odd distance parapets parish Parliamentary plans pegs piles plans and sections plate plotted proposed public carriage road public road quantity radius rails red pine resident engineer riveted road approaches rubble masonry scale sheeting shown side side-cutting signal-man slopes spandril spans specified stake Standing Orders stone straight line surface survey tangent temporary fences theodolite tion townland tunnel turnpike or public turnpike road under-girders usually viaduct walls width wing wire
Pasajes populares
Página 147 - In a wrought-iron or steel bridge the greatest load which can be brought upon it, added to the weight of the super-structure, should not produce a greater strain on any part of the material than five tons, where wrought-iron is used, or six tons and a half, where steel is employed, per square inch.
Página 45 - ... work he personally superintended and accomplished by joining Kurrachee with the northern end of the Persian Gulf. Within the next few years he superintended the laying of cables between the United States and .Cuba, and united various parts of North and South America, the West Indies, and other places. In a paper read by him at the Institution of Civil Engineers in 1865 he advocated submarine telegraphs to China and Australia, and this paper, together, no doubt, with the excellence of his previous...
Página 125 - PRISMOIDAL FORMULA. To the two end areas add four times the middle area, and multiply the sum by one-sixth of the length of the prismoid. Thus : from the foregoing example, the sum of the end areas, 592, added to four times their meswi, 1184, gives 1776, and 1776 X 16-7 = 29659-2 cubic feet, = 1098-5 cubic yards.
Página 46 - It seems, then, quite evident that we use our laws to do a large variety of different jobs. Consider an analogy. What is the logical status of the proposition that the angle between a tangent and a chord is equal to the angle in the alternate segment? Well, consider how the sentence can be used. It can be used to express the conclusion that might be drawn from a series of wellexecuted measurements made on certain kinds of pencil-drawn figures. It can also be used to express the conclusion of a Euclidean...
Página 148 - ... inches above the rails, and the level of the upper parts of the highest carriage doors. This applies to all arches, abutments, piers, supports, girders, tunnels, bridges, roofs, walls, posts, tanks, signals, fences, and other works, and to all projections at the side of a railway constructed to any gauge.
Página 10 - When a railway is intended to form a junction with an existing or authorized line of railway, the gradient of such existing or authorized line of railway shall be shown on the deposited section, and in connection therewith, and on the same scale as the general section, for a distance of 800 yards on either side of the point of junction.
Página 6 - Bridges— Public Roads Number Accommodation Bridges and Works Viaducts Culverts and Drains Metallings of roads and level crossings Gatekeepers' houses at level crossings Permanent way, including fencing : Coil per Mile.
Página 2 - ... and whether or not, and if so, at what point or points, it is proposed to lay such tramway, so that for a distance of thirty feet or upwards a less space than nine feet six inches, or if it is intended to run thereon carriages or trucks adapted for use upon railways, a less space than ten feet six inches, shall intervene between the outside of the footpath on either side of the road and the nearest rail of the tramway.
Página 29 - ... in gradients of an inclination not exceeding one in a hundred, to any extent not exceeding ten feet per mile, or to any further extent which shall be certified by the Board of Trade to be consistent with the public safety, and not prejudicial to the public interest...
Página 148 - Ibs. 23. When chairs are used to support the rails they should be secured to the sleepers, at least partially, by iron spikes or bolts. With flat-bottomed rails, when there are no chairs, or with bridge rails, fang or other through-bolts should be used, at least at the joints and at some intermediate places.