middle points of the chords pt=pO + Ot, ¥m, ~Fn and HH' at t, V and p will be equal to each other, and also perp. to the also t'Ot=f=hog angle. H' p H Fig. 6 This affords a most convenient way of radii (fit G't' and Cp) of the center lines staking out turnouts by setting the tran- of the main and… … But tan. of CTirve=Rxtan.A-/(/==<$'O0 T> T> •-. ^Xn=Rxtan.J/,= ^rrV= ^-by (1). 6. Given : a main track on a 4° curve cot.^f frog (R= 1432.7), and a number 9 and 2gn> . . R: (*)• from (ang. = 6°22'), to locate a turnout the inside of the curve. See Fig. 7 Hence the
Engineering
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