A Manual of the Principles and Practice of Road-making: Comprising the Location, Construction, and Improvement of Roads (common, Macadam, Paved, Plank, Etc.) and RailroadsA.S. Barnes & Company, 1855 - 368 pages |
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A Manual of the Principles and Practice of Road-Making: Comprising the ... William Mitchell Gillespie No preview available - 2016 |
Common terms and phrases
advantages amount ascent bottom break of gauge broad gauge broken stone broken-stone road calculation carriage cars centre cents clinometer common roads construction cost cubic yard curve cuttings and fillings depth descending direction distance ditches draught draw earth employed engine equal excavation and embankment expense feet foot formula Franklin Institute friction gauge Gayffier grade gravity ground height hill Holyhead horizontal horse improvement inches inclination increased John Macneill labor laid length less lessen level line load materials McAdam ment middle miles per hour narrow narrow gauge obliquely obtained Parnell pass pavement perpendicular plank road portion prismoidal profitable proper proportion radius railroads rails railway resistance ridge right angles side side-slopes sleepers slope speed square station steep straight edge straight line streams surface thalweg thickness timbers tion tons track usually valley vehicles velocity versed sine vertical wheels width
Popular passages
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 342 - ... days or more, and who shall not have commuted for his assessment ; and the person furnishing the same upon such requisition, shall be entitled to a credit of three days for each day's service therewith.
Page 294 - It is drawn by a horse immediately after the plough, pressing two furrows at once, and going twice over each furrow.
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.
Page 203 - ... nothing is to be laid on the clean stone on pretence of binding; broken stone will combine by its own angles into a smooth solid surface, that cannot be affected by vicissitudes of weather, or displaced by the action of wheels, which will pass over it without a jolt, and consequently without injury.
Page 148 - To prevent all disputes and litigation, it is further agreed by and between the parties to this contract, that the Engineer shall in all cases determine the amount or the quantity of the several kinds of work which are to be paid for under this contract, and...
Page 104 - ... towards its objective point; where this is the case there will be no loss of either length or height, and it will simply be exchanging a level road below for a level road above. Establishing the Grade. When the profile of a proposed route has been made, a grade line is drawn upon it (usually in red) in such a manner as to follow its general slope, but to average its irregular elevation and depressions.
Page 214 - The road in Somersetshire between Bridgewater and Cross is mostly over a morass, which is so extremely soft that, when you ride in a carriage along the road, you see the water tremble in the ditches on each side; and after there has been a slight frost, the vibration of the water from the carriage on the road will be so great as to break the young ice.
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 4 in.
Page 64 - Upon hard macadamized, and upon paved roads, the traction increases with the velocity : the increments of traction being directly proportional to the increments of velocity above the velocity 3-28 feet per second, or about 2£ miles per hour.