. Electric railway journal . 5. 154 7° 0 0 666 9° 20 12° 0 15° 0 18° 20 22° 0 Elements of Spiral No. 3 Inside Total Radius Angle X Y O G G S 1° 0 5. 195 3° 0 6° 0 10° 0 15° 0 21° 0 28° 0 16
. Electric railway journal . 5. 154 7° 0 0 666 9° 20 12° 0 15° 0 18° 20 22° 0 Elements of Spiral No. 3 Inside Total Radius Angle X Y O G G S 1° 0 5. 195 3° 0 6° 0 10° 0 15° 0 21° 0 28° 0 June 15, 1918 Electric Railway Journal 1157 9-ft. 8^-in. track centers. This curve is made up touse Pennsylvania standard spirals Nos. 2, 24 and 3,the elements of which are given in table II. It maybe interesting to note that between the 5 deg. of 160-ft. radius curve and the spiral we use a stretch of tan-gent track. This, we think, gives us a more durableswitch point and mate and there is no discomfort in. < - -Y FIG. 2—TYPICAL, BRANCH-OFF, CHICAGO SURFACE LINES taking the curve over such a piece of special make all double-track curves in Chicago clearancecurves as we feel that the saving in time of the carsin rounding curves more than compensates for anyextra expense of installation. In some cases it hasbeen necessary to cut a little off from the sidewalk atthe corner, but never enough seriously to narrow thewalk. George Weston, Engineer for Board. American Association News War Board Holds Busy Session Interurban Rates, Transportation of Draft Men toCantonments and Other Topics Discussed AT a meeting of the American Electric RailwayWar Board held in Washington on June 7 con-siderable progress in a number of matters of inter-est to electric railways was reported. The full boardwas in attendance with the exception of ChairmanMcCarter, who was detained in Newark. SecretaryBurritt and Messrs. Faber and Hill were also present. Mr. Faber reported in
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