. The Street railway journal . s., clear width between side walls 25 ft., clearance betweenwall or center columns and car i ft. ins. The central spacebetween center columns is ample for a man to stand in betweenpassing cars. When detailed plans of the subway are madethey should provide for the longest and heaviest cars thecurvature conditions will permit. ^U/IHOD OF CONSTRUCTIONMost of the subway construction would necessarily be byexcavating from the surface except where tunneling underthe river. During part of the construction the street surfacecould be planked over so that some traffic coul
. The Street railway journal . s., clear width between side walls 25 ft., clearance betweenwall or center columns and car i ft. ins. The central spacebetween center columns is ample for a man to stand in betweenpassing cars. When detailed plans of the subway are madethey should provide for the longest and heaviest cars thecurvature conditions will permit. ^U/IHOD OF CONSTRUCTIONMost of the subway construction would necessarily be byexcavating from the surface except where tunneling underthe river. During part of the construction the street surfacecould be planked over so that some traffic could pass. TEMPERATURESThe temperatures of the Boston subway for two years aregiven to show that water pipes would be safe from freezingwithin the galleries. DRAINAGE Within the subway district it is proposed to provide a high-level gravity system of sewers for surface and house drainagefrom above the level of the first floors. A low-level sewerwould take care of l-ascments of buildings, the sul)wa>s and -Low Level Subway-High. Q ) ,Depot Art Iiialilllli MAP NO. 5.—SHOWING SUBWAY PLAN NO. 2.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
