Which one of the following method is employed to manufacture pre-stressed concrete sleepers for the railways ?

Pre-tensioning followed by post-tensioning

Which one of the following method is employed to manufacture pre-stres

1.	Which one of the following method is employed to manufacture pre-stressed concrete sleepers for the railways ?
A.	Post-tensioning
B.	Pre-tensioning
C.	Pre-tensioning followed by post-tensioning
D.	Partial pre-stressing
Answer» C. Pre-tensioning followed by post-tensioning

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Which one of the following method is employed to manufacture pre-stressed concrete sleepers for the railways ?

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