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 |
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Página 5
... prevent the taking of air altogether in many cases . 11. The economic desirability of pavements is governed by the ease of movement over them , and is measured by the number of horses or pounds of tractive force required to move a given ...
... prevent the taking of air altogether in many cases . 11. The economic desirability of pavements is governed by the ease of movement over them , and is measured by the number of horses or pounds of tractive force required to move a given ...
Página 18
... from 7 A.M. to 7 P.M. , except when darkness prevented . No addition was made for this omission , nor for night traffic . " The printed instructions issued to each observer contained the following 18 HIGHWAY CONSTRUCTION .
... from 7 A.M. to 7 P.M. , except when darkness prevented . No addition was made for this omission , nor for night traffic . " The printed instructions issued to each observer contained the following 18 HIGHWAY CONSTRUCTION .
Página 33
... prevents it from becoming slippery ; it is not materially affected by freezing and thawing ; it is strong and not apt to get broken if well laid . 79. Commercial Names of Sandstone . The commercial names of sandstone are usually ...
... prevents it from becoming slippery ; it is not materially affected by freezing and thawing ; it is strong and not apt to get broken if well laid . 79. Commercial Names of Sandstone . The commercial names of sandstone are usually ...
Página 63
... prevent it from cracking . The quantity required per square yard is from three and one half to four gallons . The cost per gallon is about eight cents . A joint - filling known as " Murphy's Grout Filling STONE PAVEMENTS . 63.
... prevent it from cracking . The quantity required per square yard is from three and one half to four gallons . The cost per gallon is about eight cents . A joint - filling known as " Murphy's Grout Filling STONE PAVEMENTS . 63.
Página 80
... prevented . These conditions have nowhere , to the knowledge of your Board , been fulfilled . " So far as the careful ... prevent fraying of the fibres . Still less can the defects of wood be considered to be of less consequence than the ...
... prevented . These conditions have nowhere , to the knowledge of your Board , been fulfilled . " So far as the careful ... prevent fraying of the fibres . Still less can the defects of wood be considered to be of less consequence than the ...
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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...