Annual report of the Boston Transit Commission, for the year ending .. . running at right angles to the axisof the subway, the side-walls being of steel posts with con-crete around and between. The merits and demerits of bothtypes were discussed at considerable length in last yearsreport. The masonry arch type is employed in Sections 4and 6 in Tremont street, where the traffic is great and spaceon the street very valuable. One advantage of this typementioned in last years report is that it can be constructedby piecemeal, and all the materials for it can be convenientlysent from above the surfa
Annual report of the Boston Transit Commission, for the year ending .. . running at right angles to the axisof the subway, the side-walls being of steel posts with con-crete around and between. The merits and demerits of bothtypes were discussed at considerable length in last yearsreport. The masonry arch type is employed in Sections 4and 6 in Tremont street, where the traffic is great and spaceon the street very valuable. One advantage of this typementioned in last years report is that it can be constructedby piecemeal, and all the materials for it can be convenientlysent from above the surface to the work below through muchsmaller holes than would be required for placing long andheavy roof I-beams such as are required in the combinedtype. Methods employed in the City Streets. As the city streets are at times not sufficiently ample fortheir normal traffic, it is evident that as little interferencewith them should be made in carrying on our w^ork as isconsistent with economy and reasonable expedition. Before deciding on methods to be employed in construct-.
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Keywords: ., bookauthorbostonma, bookcentury1800, bookdecade1890, bookyear1895
