Street Pavements and Paving Materials: A Manual of City Pavements : the Methods and Materials of Their ConstructionJohn Wiley & Sons, 1900 - 532 páginas |
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Página ix
... sand tests for cement ..... 22. Strength of cement with long- and short - time tests . 102 103 104 105 23. Strength of cement with long - time sand and neat tests . 24. Requirements of tensile strength for cements ... 25 , 26. Showing ...
... sand tests for cement ..... 22. Strength of cement with long- and short - time tests . 102 103 104 105 23. Strength of cement with long - time sand and neat tests . 24. Requirements of tensile strength for cements ... 25 , 26. Showing ...
Página 27
... Sand is formed by the decomposition or disintegration of rocks . It is a common occurrence to find pockets of sand in beds of earth or limestone . These are the result of boulders being surrounded when these deposits of clay or stone ...
... Sand is formed by the decomposition or disintegration of rocks . It is a common occurrence to find pockets of sand in beds of earth or limestone . These are the result of boulders being surrounded when these deposits of clay or stone ...
Página 28
... sands that the smallest grains show any great effect of attrition . Sandstone is formed by grains of sand being deposited in beds by some agency and afterwards compacted . The sand proper is almost all quartz , as this mineral is ...
... sands that the smallest grains show any great effect of attrition . Sandstone is formed by grains of sand being deposited in beds by some agency and afterwards compacted . The sand proper is almost all quartz , as this mineral is ...
Página 59
... sand was discovered , followed by more pitch to a depth of 90 feet . From there on to 150 feet the boring was in sand mixed with asphalt . Similar borings made outside of the lake showed the latter formation near the surface , and on ...
... sand was discovered , followed by more pitch to a depth of 90 feet . From there on to 150 feet the boring was in sand mixed with asphalt . Similar borings made outside of the lake showed the latter formation near the surface , and on ...
Página 62
... sand covering an area of about 75 acres for a depth of 25 feet . The maltha is supposed to be sup- plied from a stratum of bituminous shale upon which the sand rests . The sand is covered with from 6 to 8 feet of surface loam which is ...
... sand covering an area of about 75 acres for a depth of 25 feet . The maltha is supposed to be sup- plied from a stratum of bituminous shale upon which the sand rests . The sand is covered with from 6 to 8 feet of surface loam which is ...
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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 condition construction contract contractor cost course creosote cubic yard curb deposit 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 layer less lime limestone macadam ment method miles mineral mixed mixture mortar obtained oxide paving material paving-brick paving-cement petroleum placed Portland cement pounds proper quantity quartz rail rammed repairs road roadway rolling samples sand sandstone screenings shows sidewalk Silica smooth specific gravity square inch square yard street street-car subgrade TABLE temperature tion track traffic trap-rock vary wearing surface width wood pavements York York City
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Página 425 - ... prescribe. In the case of neglect of any corporation 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 more than $700,000 had accumulated against surface railways on Manhattan Island...