Street Pavements and Paving Materials: A Manual of City Pavements, the Methods and Materials of Their ConstructionJ. Wiley & Sons, 1901 - 555 páginas |
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Página 30
... temperature of from 1200 ° to 1400 ° F. its color changed to a dull red , and the piece was slightly checked and its strength impaired . Stone very similar to the Hudson River variety is found in Luzerne County , Penn . A sample of this ...
... temperature of from 1200 ° to 1400 ° F. its color changed to a dull red , and the piece was slightly checked and its strength impaired . Stone very similar to the Hudson River variety is found in Luzerne County , Penn . A sample of this ...
Página 45
... temperature , pressure , the nature of the neighboring rocks , the epoch of its operation , and the original material , the product differing in form , appearance , composition , and properties . But the mode of forma- tion has been the ...
... temperature , pressure , the nature of the neighboring rocks , the epoch of its operation , and the original material , the product differing in form , appearance , composition , and properties . But the mode of forma- tion has been the ...
Página 47
... temperatures , but at pressures that may or may not have been high . " Mr. Day placed a number of fresh herring , a quantity of pine sawdust , and a number of pieces of fat pine wood in a cylindrical iron retort and distilled it . Of ...
... temperatures , but at pressures that may or may not have been high . " Mr. Day placed a number of fresh herring , a quantity of pine sawdust , and a number of pieces of fat pine wood in a cylindrical iron retort and distilled it . Of ...
Página 48
... temperature . " The change is thus described : " The first department of the process consists in the formation of a black oily substance similar to what arises in a liquid form at the surface , and has been termed asphaltic oil . This ...
... temperature . " The change is thus described : " The first department of the process consists in the formation of a black oily substance similar to what arises in a liquid form at the surface , and has been termed asphaltic oil . This ...
Página 49
... temperatures . He states that asphalt is being formed now , not as a primary but as a secondary product , resulting from the transformation of lighter forms of bitumen , maltha , or even thinner oils into harder bitumen by condensation ...
... temperatures . He states that asphalt is being formed now , not as a primary but as a secondary product , resulting from the transformation of lighter forms of bitumen , maltha , or even thinner oils into harder bitumen by condensation ...
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Términos y frases comunes
abutting prop Alumina amount asphalt pavement asphaltene asphaltic cement average binder bitumen bituminous rock blocks brick pavement broken stone Brooklyn carbon cent centre City Engineer clay clean coal-tar cobblestone construction contract contractor cost course creosote cubic yard curb depth durable entire erty owners expense feet wide feldspar filled foundation grade granite gravel grooved rail grout gutter hard heat hornblende inches inches deep inches thick inches wide iron joints laid less lime limestone macadam ment method miles mineral mixed mixture mortar obtained oxide paving material paving-brick paving-cement petroleum placed Portland cement practically proper quantity quartz rail rammed repairs road roadway rock asphalt roller rolling sand sandstone screenings shows sidewalk Silica smooth specific gravity square yard street street-car strength subgrade TABLE temperature tion track traffic trap-rock vary wearing surface width wood pavements York York City
Pasajes populares
Página 402 - 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...
Página 412 - ... authorities, and •whenever required by them to do so, and in such manner as they may prescribe. In the case of neglect of any corpo-ration to make these pavements or repairs after the expiration of thirty days' notice to do so, the local authorities may make same at the expense of such corporation." The street-car companies, however, have not always lived up to this requirement, and it was stated in a paper read before the American Society of Civil Engineers in December, 1896, that bills aggregating...
Página 412 - Every street surface railroad corporation so long as it shall continue to use any of its tracks in any street, avenue or public place in any city or village shall have and keep in permanent repair that portion of such street, avenue or public place between its tracks, the rails of its tracks, and two feet in width outside of its tracks, under the supervision of the proper local authorities, and whenever required by them to do so, and in such manner as they may prescribe. In case of the neglect of...