. The Street railway journal . 1904.] STREET RAILWAY JOURNAL. 313 the same amount. The maximum curvature used on trunk linework is 3 degs., but on close interurban work through sub-divided country, maximum curves of 7 degs. are allowed. Onall the regular interurban lines themaximum grade allowed is 1 per the Rubio line, toward Mt. Lowe,an 8 per cent grade is , BONDS AND SPECIAL WORKAll rail-joints in the city track arecast-welded, the Falk process being em-ployed. On interurban lines six-poleangle-joints are used, with holes drilledfor J-8-in. bolts. Even joints are la
. The Street railway journal . 1904.] STREET RAILWAY JOURNAL. 313 the same amount. The maximum curvature used on trunk linework is 3 degs., but on close interurban work through sub-divided country, maximum curves of 7 degs. are allowed. Onall the regular interurban lines themaximum grade allowed is 1 per the Rubio line, toward Mt. Lowe,an 8 per cent grade is , BONDS AND SPECIAL WORKAll rail-joints in the city track arecast-welded, the Falk process being em-ployed. On interurban lines six-poleangle-joints are used, with holes drilledfor J-8-in. bolts. Even joints are laid inthe city and broken joints in thecountry. The Brown-Edison 0000 cop-per bond is the standard adopted, and it is applied in the usualmethod, the Brown grinding machine being used to polish therails. For cross bonding between tracks 000 copper is em- electrolysis has been experienced, but it is guarded against inthe conduit districts of the cities by laying brick or other non-conducting material around the base of the Strett FIG. 15.—RIGHT-HAND CROSSOVER WITH TWO GAGES Except those on bridges the ties used throughout the systemare of California redwood, and their life is estimated at fromten to fifteen years. In the seashore cities, where the streets
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
