A Manual of the Principles and Practice of Road-making: Comprising the Location, Consruction, and Improvement of Roads (common, Macadam, Paved, Plank, Etc.) and Rail-roads
A.S. Barnes & Company, 1871 - Railroad engineering - 464 pages
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advantages amount ascent bottom break of gauge bridge broad gauge broken stone calculation carriage cars centre cents chord clinometer construction cost cross-section cubic feet cubic yard curve depth descending direction distance ditches draught draw earth employed engine equal excavation and embankment expense filled foot formula Franklin Institute friction Gayffier given grade gravity ground height hill Holyhead horizontal horse inches inclination increased iron John Macneill labor laid length less lessen load materials McAdam ment method middle miles per hour narrow narrow gauge oblique obtained Parnell pass pavement perpendicular plank road portion prismoidal profitable proportion radius railroad rails resistance ridge side side-slopes sleepers slope solid span speed square station steep straight edge straight line surface tangent tangential angle thalweg thickness timber tion tons track train usually valley vehicles velocity versed sine vertical wheels width
Page 28 - Direct it flies and rapid, Shattering that it may reach, and shattering what it reaches. My son ! the road, the human being travels, That, on which BLESSING comes and goes, doth follow The river's course, the valley's playful windings, Curves round the corn-field and the hill of vines, Honouring the holy bounds of property ! And thus secure, though late, leads to its end.
Page 261 - ... that nothing could do more harm towards the adoption of railroads than the promulgation of such nonsense, as that we shall see locomotive engines travelling at the rate of 12, 16, 18, and 20 miles an hour.
Page 295 - It is drawn by a horse immediately after the plough, pressing two furrows at once, and going twice over each furrow.
Page 211 - All the irregularities of the upper part of the said pavement are to be broken off by the hammer, and all the interstices to be filled with stone chips firmly wedged or packed by hand with a light hammer, so that when the whole pavement is finished there shall be a convexity of...
Page 35 - ... man, owing to its anatomical formation and great weight. Though a horse on a level is as strong as five men, on a grade of 15 per cent, it is less strong than three...
Page 341 - At many turnpikes, it has been said, the money levied is more than double of what is necessary for executing, in the completes! manner, the work, which is often executed in a very slovenly manner, and sometimes not executed at all.
Page 342 - The whole number of days' work to be assessed in each year shall be ascertained, and shall be at least three times the number of taxable inhabitants in such town.