 | Boston (Mass.). Transit Commission - 1896 - 214 páginas
...centre, and after this trench had been refilled the trench was dug for the other half of the .arch. ticular part of the street in question. The following...wide shall be excavated across the street to as great u distance and depth as is necessary for the construction of the subway. The top of this excavation... | |
 | Boston (Mass.). Transit Commission - 1898 - 210 páginas
...name being g1ven because «rreuof* it suggests the method employed. The following slightly Bo**on' modified extract from the specifications for Section...subway. The top of this excavation shall be bridged, during the night, by strong beams and timbering, whose upper surface is ííush with the surface of... | |
 | Charles Prelini, Charles Shattuck Hill - 1901 - 340 páginas
...i 2n employed in one work, described in the specificachief engineer, Mr. HA "Trenches about 12 ft. wide shall be excavated across the street to as great...subway. The top of this excavation shall be bridged during the night by strong beams and timbering, whose upper surface is flush with the surface of the... | |
 | Charles Prelini, Charles Shattuck Hill - 1901 - 368 páginas
...prepared by the chief engineer, Mr. HA Carson, M. Am. Soc. CE, as follows : — "Trenches about 12 ft. wide shall be excavated across the street to as great...subway. The top of this excavation shall be bridged during the night by strong beams and timbering, whose upper surface is flush with the surface of the... | |
 | New York Chamber of Commerce - 1905 - 328 páginas
...building' the subway will be understood from the following extract from the specifications : METHOD "Trenches about 12 feet wide shall be excavated across...necessary for the construction of the subway. The top of the excavation shall be bridged by strong beams and timbering, whose upper surface is flush with the... | |
 | New York Chamber of Commerce - 1905 - 374 páginas
...building the subway will be understood from the following extract from the specifications : METHOD "Trenches about 12 feet wide shall be excavated across...necessary for the construction of the subway. The top of the excavation shall be bridged by strong beams and timbering, whose upper surface is flush with the... | |
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Trenches about 12 feet wide shall be excavated across the street, to as great a distance and depth as is necessary for the construction of the subway. The top of the excavation shall be bridged by strong beams and timbering, whose upper surface is flush... 