. The Street railway journal . re is less or no water now present, so theheat exchanges are minimized. Certain French boilerinsurance companies have published tests which show anaverage saving from superheat of 10 per cent in steamand II per cent in coal with simple engines, and of 23 percent in steam and 21 per cent in coal with compoundengines, figures which seem to point to a saving of about10 per cent for each cylinder in a series, though it seemsdoubtful if a third cylinder would keep up the same rate ofincreased economv. 3^4 STREET RAILWAY JOURNAL. [Vol. XXXI. No. lo. RICHMOND & CHESAPEA
. The Street railway journal . re is less or no water now present, so theheat exchanges are minimized. Certain French boilerinsurance companies have published tests which show anaverage saving from superheat of 10 per cent in steamand II per cent in coal with simple engines, and of 23 percent in steam and 21 per cent in coal with compoundengines, figures which seem to point to a saving of about10 per cent for each cylinder in a series, though it seemsdoubtful if a third cylinder would keep up the same rate ofincreased economv. 3^4 STREET RAILWAY JOURNAL. [Vol. XXXI. No. lo. RICHMOND & CHESAPEAKE BAY SINGLE-PHASE RAILWAY BY JOHN R. HEWETT. From many points of view the Richmond & ChesapeakeBay Railway is one of more than ordinary interest. Ittraverses a section of the State of Virginia that is rich inhistorical associations; and it has numerous features, inboth its mechanical construction and in its electrical equip-ment, that are novel. Over and above this, the civil en- o Baiuliiiia1 Paii«haw c Moiitpeller. FIG. 1.—MAP OF THE RICHMOND & CHESAPEAKE BAYRAILWAY gineering features surpass in interest any other single-phase trolley road yet put into operation. The road at present extends only from Richmond, Va.,to Ashland, in the same State, a distance of miles (seemap, Fig. i). For the first half mile, starting from theRichmond terminal depot, the road passes northwardthrough the suburbs of Richmond, which in this directionconsists largely of negro tenements. This portion of thetrack is laid upon a reinforced concrete viaduct, which isa remarkably fine piece of construction work. The viaductis 2800 ft. in length and in certain places reaches a heightof 70 ft. from the ground level. The principal features ofthis viaduct were published in the Street Railway Jour-nal for March 30, 1907. The terminal facilities in both Richmond and Ashlandare such that they are more comparable with those of asteam road than those ordinarily found in connection withtrolley roads. Apr
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
