Railway Engineering
If a is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by

cot(a)
cot(oc/2)
Vi cot(cc/2)
Vi cosec(a/2)

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Railway Engineering
Stretcher bar is provided

To ensure exact gauge at the toe of the switch as well as the nose of crossing
To permit lateral movement of the tongue rail
To prevent any vertical movement between the wing rail and nose of crossing
To maintain the two tongue rails at the exact distance

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