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The sleepers which satisfy the requirements of an ideal sleeper are ___________

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The sleepers which satisfy the requirements of an ideal sleeper are ___________

(a) Cast iron sleepers

(b) R.C.C sleepers

(c) Steel sleepers

(d) Wooden sleeper

The question was posed to me in semester exam.

The doubt is from Dealing with Railways topic in chapter P.W.D of Civil Engineering Drawing

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Correct answer is (d) Wooden sleeper

To explain: Wooden railway sleepers are also comparatively cheap, as well as light and easy to transport, install and maintain. The average timber railway sleeper weighs around 160lb-250lb, whereas an equivalent sleeper made of concrete could weigh anything up to 800lb. This means that wooden railway sleepers are quicker and easier to install initially and require little to no specialist equipment or vehicles for maintenance, which means cost-savings for rail operators.

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