. The Street railway journal . he groove. The wheel flange should be ableto press the dirt upward over the lip. The width of the tram (orflat surface of the lip), the part on which street vehicles will amount to at most one-third of the width of the head ofthe rail, and generally 15 mm. is sufficient if the rail is elevatedslightly above the grade of the street. Here unfortunately trackengineers are not given much choice, for the authorities frequentlydemand a much wider tram: for instance, at Berlin, 25 mm. /. Thickness of the Web.—While with the composite rail 8 usually a su
. The Street railway journal . he groove. The wheel flange should be ableto press the dirt upward over the lip. The width of the tram (orflat surface of the lip), the part on which street vehicles will amount to at most one-third of the width of the head ofthe rail, and generally 15 mm. is sufficient if the rail is elevatedslightly above the grade of the street. Here unfortunately trackengineers are not given much choice, for the authorities frequentlydemand a much wider tram: for instance, at Berlin, 25 mm. /. Thickness of the Web.—While with the composite rail 8 usually a sufficient width of rail web, with a single web rail theweb should have the thickness of 10 mm. With an eccentric webrail the thickness of the web should be 16 mm. 5. Base of Rails.—This should not be less than too mm. forhorse-car rails and 130 mm. for electric rails. The base shouldhave a thickness at the web of at least 20 mm, This thicknessniay taper down at the ends to 10 mm, 520 STREET RAILWAY JOURNAL. [Vol. XV. No. HUGUST, 1599. PUBLISHED MONTHLY BY THE STREET RAILWAY PUBLISHING COMPANY Main Office :NEW YORK, Beard Building, 120 Liberty Street. Branch Offices : Chicago Monadnock Block. Philadelphia 929 Chestnut Street. London 39 Victoria Street, Westminster. Paris 50 Boulevard Haussman. Copenhagen V. Faber-Madsen, 9 Valby Langgade. Berne Chas. Rochat, 15 A Falkeuburg. Milan Guido Semenza, Via Paleocapa, 4. Vienna E. A. Ziffer, I Giselastrasse, 9. St. Petersburg Alexander L. Lineff, Ligovka, 67-22. Long Distauce Telephone, New York, 4044 Address, Stryjourn, New York. TERMS OF SUBSCRIPTION. in the United States and Canada In all Foreign Countries, per annum. per annum. $ 31 fr Subscriptions payable always in advance, by check (preferred), money olderor postal note, to order of C. E. Whittlesey, Treasurer. NOTICE. ^Papers and correspondence on all subjects of practical interest toour readers ate cordially invited. Our columns are always open f
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
