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Which of the following types of track fittings are fixed with the help of tie bars and cotters?
1. Rail to cast iron sleepers
2. Rail to steel trough sleepers
3. Rail to rail
4. Rail to wooden sleepers

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Correct Answer - Option 1 : Rail to cast iron sleepers

Explanation:

Fittings of CI Sleepers

Rails are fixed to cast iron sleepers using cotters and tie bars. These fittings are described below.

Cotters: Cotters are used for fixing tie bars to CI sleepers. Cotters are classified according to their methods of splitting. The four different types of cotters being used on Indian Railways are as follows.

(a) Centre split cotter

(b) Side split cotter

(c) Solid end split cotter

(d) Bent plate cotter

The overall dimensions, taper, etc. of these four cotters are by and large identical; they only differ in their methods of splitting. The length of a cotter is 152 mm and the approximate weight is 0.80 lb per piece.

MS tie bars: MS tie bars are used for holding the two plates of CST-9 sleepers together. The normal length of a tie bar is 2720 mm for BG and 1870 mm for MG. The section of a BG tie bar measures 50 mm ×13 mm and that of an MG tie bar measures 45 mm × 10 mm.

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