Rudiments of the Art of Constructing and Repairing Common Roads

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John Weale, 1850 - 136 pages
 

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Page 64 - 2 On a well-made broken stone road, in a dry clean state . „ 5 On a well-made broken stone road, covered with dust . „ 8 On a well-made broken stone road, wet and muddy . „ 10 On a gravel or flint road, in a dry clean state . . „ 13 On a gravel or flint road, in a wet and muddy state . „ 32 Stage wagon, B=^t^ + J£ + Cv . . . (1.) Stagecoach, B = W w 4- ~ + cv . . . (2.) ETTLE 1.
Page 97 - You don't mean you would prefer a bog? — If it was not such a bog as would not allow a man to walk over it, I should prefer it.
Page 121 - Few persons are aware of the extent to which a road may be injured by high hedges, or lines of trees. Trees are worse than hedges, because they not only deprive the road of the action of the air and sun, but...
Page 62 - The resistance to traction is directly proportional to the load, and inversely proportional to the diameter of the wheel. 2nd. Upon a paved or a hard macadamized road the resistance is independent of the width of the tyre, when this quantity exceeds from 3 to 4 inches.
Page 63 - Upon soft roads of earth, or sand or turf, or roads fresh and thickly gravelled, the traction is independent of the velocity. • 6th. Upon a well-made and compact pavement of hewn stones, the traction at a walking pace is not more than three-fourths of that upon the best macadamized roads under similar circumstances : at a trotting pace it is equal to it. 7th. The destruction of the road is in all cases greater as the diameters of the wheels are less, and it is greater in carriages without than...
Page 89 - And, in answer to the question, "Do you consider a road so made will not be likely to wear hollow in the middle, so as to allow the water to stand, after it has been used for some time?
Page 101 - The gravel selected for this purpose should be free from any kind of dirt, clay, or other impurity, and should consist of stones and sand, mixed in about such proportions that the latter would just fill the interstices of the former. The gravel should then be mixed with the proper quantity of ground...
Page 102 - 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...
Page 61 - What additional increase in the length of a road would be equivalent to a given inclined plane upon it; or conversely, what inclination might be given to a road as an equivalent to a given decrease in its length? To satisfy this question...
Page 99 - ... as great a degree of solidity as possible. The same mode of proceeding should be followed even where it is intended to form either a paved or concrete foundation ; for, as before remarked, too much care cannot be bestowed on that part of the road.

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