Handbook of Railroad Construction: For the Use of American Engineers. Containing the Necessary Rules, Tables, and Formulæ for the Location, Construction, Equipment, and Management of Railroads, as Built in the United States ... |
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Common terms and phrases
abutment amount angle applied arch axle beam blast pipe boiler borrow pits bottom braces bridge and load cables cars cast-iron cement cent centre coal coke compression contour lines contractor cost cubic foot curvature curve cylinder D. K. Clark depth diameter dimensions distance driving wheels earth embankment engine excavation feet grade feet per mile feet span five flange foot formula freight frog fuel gauge girder gives half inches heat horizontal hundred feet inclined increased joints laid length locomotive lower chord masonry material miles per hour mortar passenger piers pile pile bridging placed plate pounds pressure radius rail railroad resistance rivets road rock rods side slope speed square inch steam stone strength surface suspension bridge tension thickness timber tons trains truss truss bridges tubes twenty velocity vertical voussoir weight wheels whence whole width wood wrought iron yard
Popular passages
Page 415 - McCallum's words, each officer had "the authority with the approval of the President and General Superintendent to appoint all persons for whose acts he is held responsible, and may dismiss any subordinate when, in his judgment, the interest of the company will be promoted thereby.
Page 414 - ... (4) Great promptness in the report of all derelictions of duty, that evils may be at once corrected. (5) Such information, to be obtained through a system of daily reports and checks, that will not embarrass principal officers nor lessen their influence with their subordinates. (6) The adoption of a system, as a whole, which will not only enable the General Superintendent to detect errors immediately, but will also point out the delinquent.
Page 77 - QUANTITIES AND QUALITIES APPROXIMATE. The quantities and qualities of work presented in the schedule are merely approximate, and the information given on the maps and profiles in relation thereto is according to the best present knowledge. The company retains the right to change at any time during the progress of the work, the alignment, grades, and width of the road, or any part thereof; and also the limits of the sections, or to alter the character, vary the dimensions, or change the location of...
Page 64 - ... with mortar. Each stone before being laid shall be carefully cleaned and moistened, and masonry built in hot weather shall be protected from the sun as fast as laid by covering with boards. No masonry shall be laid in freezing weather. No hammering will be allowed on a course after it is set. The following modifications of the specifications apply to the up-stream pier-heads or ice-breakers.
Page 78 - The contractor shall discharge from his service, when required by the engineer, any disorderly, dangerous, insubordinate, or incompetent person employed on or in the vicinity of the works under construction by the United States. None but skilled foremen or workmen shall be employed on work requiring special qualifications.
Page 82 - And the said parties of the first part do hereby covenant, grant, promise and agree, to and with the said party of the...
Page 399 - ... crystalline structure in wrought iron through vibrations. M. Bourville's apparatus consisted of a bent axle, which was firmly fixed up to the elbow in timber, and which was subjected to torsion by means of a cog-wheel connected with the end of the horizontal part. At each turn the angle of torsion was twenty-four degrees. A shock was produced each time that the bar left one tenth to be raised by the next.
Page 414 - ... 3. The means of knowing whether such responsibilities are faithfully executed. 4. Great promptness in the report of all derelictions of duty, that evils may be at once corrected. 5. Such information, to be obtained through a system of daily reports...
Page 4 - The diminished cost of transport invariably augments the amount of commerce transacted, and in a much larger ratio than the reduction of cost...
Page 77 - ... the board and contractors." In 17 the unqualified right is retained in the district "to change at any time during the progress of the work, the alignment, grades and width of the canal or any part thereof, and also the limits of all sections; or alter the character, vary the dimensions or change of location of structures, or substitute one kind of work or material for another [and many other like powers], * * * without the contract price being thereby affected unless the aggregate value of all...