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 11
... cent was cobble , 61 per cent granite , and 23 per cent asphalt . The granite , however , was not the present - shaped blocks , but prac- tically like Belgian . In that year a special commission of experts was appointed to report on the ...
... cent was cobble , 61 per cent granite , and 23 per cent asphalt . The granite , however , was not the present - shaped blocks , but prac- tically like Belgian . In that year a special commission of experts was appointed to report on the ...
Página 15
... cent of silica , 17 of magnesia , 10 of alumina , 12 of lime , and 16 of iron oxides ; the latter 57 per cent of silica , 26 of manganese , 14 of lime , with small amounts of oxide of iron and manganese . Hornblende belongs to the ...
... cent of silica , 17 of magnesia , 10 of alumina , 12 of lime , and 16 of iron oxides ; the latter 57 per cent of silica , 26 of manganese , 14 of lime , with small amounts of oxide of iron and manganese . Hornblende belongs to the ...
Página 16
... cent , alumina 6 per cent , magnesia 15 per cent , lime 23 per cent , and iron oxides 6 per cent . Mica . This is the mineral so well and popularly known as isinglass . There are several varieties , but the two found in granite rocks ...
... cent , alumina 6 per cent , magnesia 15 per cent , lime 23 per cent , and iron oxides 6 per cent . Mica . This is the mineral so well and popularly known as isinglass . There are several varieties , but the two found in granite rocks ...
Página 21
... cent , alumina 14 , lime 10 , magnesia 6 , oxide of iron and manganese 12 , and soda 4 per cent , with small quantities of potash , etc. In the United States it is found principally west of the Mississippi , and especially in Cali ...
... cent , alumina 14 , lime 10 , magnesia 6 , oxide of iron and manganese 12 , and soda 4 per cent , with small quantities of potash , etc. In the United States it is found principally west of the Mississippi , and especially in Cali ...
Página 22
... cent . 68.11 14.28 2.63 1.86 .68 .34 5.46 6.57 99.93 An average of the tests made of this stone showed a crushing strength of 23,715 lbs . per square inch . GRANITE FROM BLUE HILL , ME . Per cent . Water Silica 0.27 74.64 Ferric oxide ...
... cent . 68.11 14.28 2.63 1.86 .68 .34 5.46 6.57 99.93 An average of the tests made of this stone showed a crushing strength of 23,715 lbs . per square inch . GRANITE FROM BLUE HILL , ME . Per cent . Water Silica 0.27 74.64 Ferric oxide ...
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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...