Aide-mémoire to the military sciences, framed from contributions of officers of the different services, and ed. by a committee of the Corps of Royal engineers. 3 vols. [each in 2 pt.].1862 |
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Page 331
... passing between the places is not sufficient to warrant so great an outlay , it will then become a matter of consideration whether the course of the road should be kept straight , its surface being made to undulate with the natural face ...
... passing between the places is not sufficient to warrant so great an outlay , it will then become a matter of consideration whether the course of the road should be kept straight , its surface being made to undulate with the natural face ...
Page 332
... passing over them ; or upon a stone pavement , such as is common in the streets of towns , laid with more or less regularity , and in passing over which the resistance is felt in jerks , as the wheels bound from stone to stone . Many ...
... passing over them ; or upon a stone pavement , such as is common in the streets of towns , laid with more or less regularity , and in passing over which the resistance is felt in jerks , as the wheels bound from stone to stone . Many ...
Page 335
... passing up or down a hill , we have only to calculate by the rule already given at page 305 , the resistance on a level road , to which , if the carriage ascends the hill , we must add , or if it descends , subtract , the force ...
... passing up or down a hill , we have only to calculate by the rule already given at page 305 , the resistance on a level road , to which , if the carriage ascends the hill , we must add , or if it descends , subtract , the force ...
Page 336
... passing alternately along the road , no real loss would be occasioned by the inclination of the road , since as much power would be gained in the descent of the hill as was lost in its ascent . Such is not , however , practically the ...
... passing alternately along the road , no real loss would be occasioned by the inclination of the road , since as much power would be gained in the descent of the hill as was lost in its ascent . Such is not , however , practically the ...
Page 349
... passing over them , they become , to a certain extent , intermixed ; the road materials are forced down into the soil , and the soil works up amongst the stones , and the original line of separation becomes entirely lost . If the ...
... passing over them , they become , to a certain extent , intermixed ; the road materials are forced down into the soil , and the soil works up amongst the stones , and the original line of separation becomes entirely lost . If the ...
Other editions - View all
Aide-Mémoire to the Military Sciences, Framed from Contributions of Officers ... Aide-Memoire No preview available - 2018 |
Aide-Mémoire to the Military Sciences, Framed From Contributions of Officers ... Aide-Mémoire No preview available - 2018 |
Aide-Mémoire to the Military Sciences, Framed from Contributions of Officers ... Aide-Memoire No preview available - 2018 |
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angle applied artillery ascertained atmosphere attack battery blast pipe boiler buckets carbon carbonic acid carriages cavalry centre coils coke column condenser connected connecting rod considerable constructed crank cubic cubic foot cylinder diameter direction distance driving wheels effect electric telegraph electricity electro-magnet employed engine and tender engine-man equal evaporation feet fire fire-box flues force fuel gabions galvanometer given gutta-percha inclination increased infantry instrument insulated iron irrigation length local battery locomotive magnet material means mechanical metal miles miles per hour motion moving necessary needle observed obtained Ordnance Survey passing pipe piston placed plates portion position practice pressure produced proportion quantity raised ravelin render reservoirs resistance road screw shew shewn side signal square inch station steam steam engine stroke sufficient supply telegraph temperature tons train troops tube valve velocity vertical weight wheel wire yards zinc
Popular passages
Page 352 - 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 four inches in the breadth of fifteen feet from the centre.
Page 329 - Of all these, the best is the straight or uniformly inclined, or level road, although at the same time it is the most expensive. If the importance of the traffic passing between the places is not sufficient to warrant so great an outlay, it will become a matter of consideration whether the course of the road should be kept straight, its surface being made to undulate with the natural face of the country; or whether, a level or...
Page 369 - BART. [This paper, written in 1843, is valuable now, and is here reproduced from the fourth Edition of the present work.] THE importance of rolling roads, either newly constructed or when subjected to extensive repairs, seems never to have been duly appreciated. Lines of any length of new-laid broken stone may be deemed nearly impracticable to ordinary traffic ; the worst and most hilly old roads are always taken in preference to the new roads while in that state, although the latter may be much...
Page 351 - And this description of gravel is that which is by far the most frequently met with. 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 330 - 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 2J miles per hour.
Page 329 - 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 329 - AB, or we might adopt a line which should gradually and equally incline from one town to the other, supposing them to be at...
Page 465 - An easy and obvious expedient suggests itself for cutting off the feed, and supplying it according to the wants of the boiler, which, however, I do not recollect seeing adopted in practice. 25. The float which rises and falls with the level of the water in the boiler might be made to act by its rod upon the gearing of the...
Page 351 - ... inches, in any case. 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 inches in the breadth of 15 feet from the centre.
Page 329 - ... following all the sinuosities and curves which the irregular formation of the country might render necessary for the fulfilment of these conditions.