Railroad Construction: Theory and Practice. A Textbook for the Use of Students in Colleges and Technical SchoolsJ. Wiley, 1913 - 789 halaman |
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Edisi yang lain - Lihat semua
Istilah dan frasa umum
accuracy allowance amount approximate assumed average ballast boiler c. d. Log cars center of gravity central angle chord COKO computed considered construction corbels cost COTANGENTS cross-section cubic yards culvert curvature degree of curvature distance drivers earth earthwork effect embankment engine equal error estimated excavation exsec feet fill formula freight frequently frog given greater haul horizontal inches increase joint length less load locomotive LOILO main track mass curve material method miles per hour necessary nitro-glycerine obtained operating expenses pile plumb-bob possible pounds pressure prismoidal correction pusher radius rail railroad reduced resistance road roadbed rock ruling grade scrapers sections shown side slope sometimes station steam stringers superelevation surface switch Table tangent timber tion tractive traffic train trestle tunnel usually vary velocity Vers vertical volume weight wheels width
Bagian yang populer
Halaman 231 - All tests and inspection shall be made at the place of manufacture prior to shipment, and shall be so conducted as not to interfere unnecessarily with the operation of the works.
Halaman 168 - ... less than one tape-length apart and measuring between horizontal needles set in wooden blocks inserted in the top of each tripod. The elevation of each needle is also observed. The true horizontal distance between two successive positions of the needles then equals the square root of the difference of the squares of the inclined distance and the difference of elevation. Such measurements will probably be more accurate than those made by attempting to hold the tape horizontal and plumbing down...
Halaman 228 - The inspector representing the purchaser shall have free entry, at all times while work on the contract of the purchaser is being performed, to...
Halaman 231 - Unless otherwise specified, the section of rail shall be the American Standard, recommended by the American Society of Civil Engineers, and shall conform, as accurately as possible, to the templet furnished by the railroad company, consistent with paragraph No.
Halaman 107 - These are in their order (1) Care in the selection, inspection and acceptance of all material that enters into every part of the machine. (2) Design for strength. (3) Design for production. GENERAL SPECIFICATIONS. Weight of shovel: Seventy (70) tons. Capacity of dipper: Two and one-half (2J) yards.
Halaman 228 - ... from a straight line in any direction when delivered to the cold-straightening presses. Those which vary beyond that amount, or have short kinks, shall be classed as second quality rails and be so stamped. The distance between supports of rails in the gagging press shall not be less than 42 ins.
Halaman 180 - ... or even less, may be used. C should be increased for steep side slopes, especially if the upper part of the valley has a much greater fall than the channel at the culvert...
Halaman 227 - There shall be sheared from the end of the bloom, formed from the top of the ingot, sufficient metal to secure sound rails.
Halaman 228 - Ten per cent of the entire order will be accepted in shorter lengths, varying by even feet down to 24 feet. A variation of J4 in. in length from that specified will be allowed.
Halaman 201 - Ballast: Selected material placed on the roadbed for the purpose of holding the track in line and surface.