Symmetrical Split

When a straight track splits up in two different directions with equal radii, the layout is known as a symmetrical split (Fig. 15.3). In other words, a symmetrical split is a contrary flexure in which the radii of the two curves are the same. The salient features of a symmetrical split are the following.

(a) The layout consists of a pair of points, one acute angle crossing, four curved lead rails, and two check rails.

(b) The layout is symmetrical about the centre line. This means that the radii of the main track as well as of the branching track are equal.

(c) The layout provides facilities for diverting vehicles both towards the left and the right.

(d) It is suitable for locations with space constraints, as it occupies comparatively much less space than a turnout from the straight track.

Turnout of Contrary Flexure | RAILWAY ENGINEERING | Three-throw Switch