Chapter: Civil : Railway Airport Harbour Engineering : Railway Engineering : Track Fittings and Fastenings
Fittings of CI Sleepers
Fittings of CI Sleepers
Rails are fixed to cast iron
sleepers using cotters and tie bars. These fittings are described below.
Cotters
Cotters
(Fig. 10.14) 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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