eet of their original positions, owing to tne spiralingaction of trains, so he can not start with either of these points. There-fore before the curve can be started there are two things that must oeknown, (1) the intersection angle, and (2) the degree of curve. Tne inter-section angle can be found… … method, but for long sharp curves the topography not allow this method to be used. In this event, the method shown in fig* lo must be used. Thepoint A must be taken on the tangent, but no effort is made to have it atthe P.O. Point B is then located in the center of the track - a tack in atie…
Surveying · Theses
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