A Treatise on Highway Construction: Designed as a Text-book and Work of Reference for All who May be Engaged in the Location, Construction, Or Maintenance of Roads, Streets, and PavementsJ. Wiley, 1892 - 696 páginas |
Dentro del libro
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Página xxv
... community is stagnant , the condition . of the roads will indicate the fact ; if they have no roads , they are savages . " Although roads are the offspring of civilization , they have be- come the chief factors , if not indeed the means ...
... community is stagnant , the condition . of the roads will indicate the fact ; if they have no roads , they are savages . " Although roads are the offspring of civilization , they have be- come the chief factors , if not indeed the means ...
Página xxvi
... condition of the high- ways ; but commercial intercourse as represented in the exchange of products is as much dependent upon the condition of the public road to - day as it ever was , for the reason that it is impossible to construct a ...
... condition of the high- ways ; but commercial intercourse as represented in the exchange of products is as much dependent upon the condition of the public road to - day as it ever was , for the reason that it is impossible to construct a ...
Página xxix
... condition of the English highways a hundred and fifty years ago , Lord Macaulay tells us that it was no uncom- mon thing for the fruits of the earth to rot in one place when a score of miles away the people were suffering from a ...
... condition of the English highways a hundred and fifty years ago , Lord Macaulay tells us that it was no uncom- mon thing for the fruits of the earth to rot in one place when a score of miles away the people were suffering from a ...
Página xxx
... condition of her highways by the establishment of a comprehensive system of turnpikes , and be- fore the beginning of this century thirty thousand miles of these roads had been built ; but they were constructed in such an imper- fect ...
... condition of her highways by the establishment of a comprehensive system of turnpikes , and be- fore the beginning of this century thirty thousand miles of these roads had been built ; but they were constructed in such an imper- fect ...
Página xxxi
... condition to the far - reaching and splendidly maintained system of highways , on which the obstacles to economical transportation have been reduced to the minimum . In the United States the highways have not improved as rapidly as ...
... condition to the far - reaching and splendidly maintained system of highways , on which the obstacles to economical transportation have been reduced to the minimum . In the United States the highways have not improved as rapidly as ...
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TREATISE ON HIGHWAY CONSTRUCTI Austin T. (Austin Thomas) B. 185 Byrne Sin vista previa disponible - 2016 |
Términos y frases comunes
amount angle of repose angles asphalt pavements asphaltum average binder course bituminous bituminous rock blocks brick broken stone cantonniers cent centre clay clean coal-tar compacted concrete condition construction contract contractor cost covered crushing cubic foot cubic yard culvert curb degrees Fahr depth diameter ditches drainage drains durable earth embankment employed engineer excavation feet filled foot foundation grade granite gravel gutter horses hydraulic hydraulic cement inches thick iron joints labor laid layer length less lime limestone load Macadam maintenance masonry mastic material ment mile mixed mortar paving pipe placed Portland cement pounds proportion quantity rammed removed repairs resistance road roadway rock roller rolling Rosendale sand sandstone side slope specific gravity specifications spread square inch square yard street strength surface TABLE temperature tensile strength tion tons traffic varies vehicles wear weather weight wheels width wood pavements
Pasajes populares
Página xxx - They will here meet with rutts which I actually measured four feet deep, and floating with mud only from a wet summer...
Página 553 - Corporation, is directly or indirectly interested therein, or in the supplies or work to which it relates, or in any portion of the profits thereof.
Página 541 - ... any improper materials used in its construction, or by or on account of any act or omission of the said Contractor or his agents...
Página 541 - All loss or damage arising out of the nature of the work to be done under this agreement, or from any unforeseen obstructions or difficulties which may be encountered in the prosecution of the same, or from the action of the elements, or from incumbrances on the line of the work, shall be sustained by the said Contractor.
Página 311 - ... sources are not isolated, and the whole mass of the soil forming the side slopes appears saturated, the drainage may be effected by excavating trenches a few feet wide at intervals to the depth of some feet into the side slopes, and filling them with broken stone, or else a general drain of broken stone may be made throughout the whole extent of the side slope by excavating into it. When this is deemed necessary, it will be well to arrange the drain like an inclined retaining-wall, with buttresses...
Página 310 - ... which are made a few feet wide and have a ditch on the inner side to receive the surface-water from the portion of the side slope above them. These benches catch and retain the earth that may fall from the portion of the side slope above.
Página 558 - ... nor assert that there was any misunderstanding in regard to the nature or amount of the work to be done.
Página 565 - ... all loss or damage arising out of the nature of the work aforesaid, or from the action of the elements, or from any unforeseen obstructions or difficulties which may be encountered in the prosecution of the same...
Página 347 - The determination of the values of the different factors entering into the problem is almost wholly a matter of judgment. An estimate for any one of the above factors is liable to be in error from 100 to 200 per cent, or even more, and of course any result deduced from such data must be very uncertain. Fortunately, mathematical exactness is not required by the problem nor warranted by the data. The question is not one of 10 or 20 per cent of increase; for if a 2-foot pipe is...
Página 282 - ... line being adopted, the course of the road should be made to deviate from the direct line, and follow the winding course which such a condition is supposed to necessitate. In the second case, that of two places situated on opposite sides of the same valley, there is, in like manner, the choice of a perfectly straight line to connect them, which would probably require a...