Question
Download Solution PDFComposite Sleeper Index’ is employed to determine
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
This is an index to determine the suitability of a particular timber for use as a sleeper.
Note:
This index measures the mechanical strength of timber, derived from its composite properties of
strength and hardness.
The C.S.I. is calculated from the relation.
C.S.I = \(\frac{{{\rm{S}} + 10{\rm{H}}}}{{20}}\)
Where,
S = Strength Index, both for green and dry timber at 12% moisture content.
H = Hardness Index, both green and dry timber at 12% moisture content.
Minimum value of C.S.I. prescribed on Indian Railways is as follows:
| Type of sleeper | Minimum C.S.I |
| Track Sleeper | 783 |
| Crossing Sleeper | 1352 |
| Bridge Sleeper | 1455 |
Last updated on Jul 2, 2025
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