In cold countries, water pipes are laid much below the ground. Why?

1.	In cold countries, water pipes are laid much below the ground. Why?
Answer» <html><body><p></p>Solution :If the pipes are <a href="https://interviewquestions.tuteehub.com/tag/laid-538660" style="font-weight:bold;" target="_blank" title="Click to know more about LAID">LAID</a> over ground or just below ground the pipes break when the <a href="https://interviewquestions.tuteehub.com/tag/atmospheric-887165" style="font-weight:bold;" target="_blank" title="Click to know more about ATMOSPHERIC">ATMOSPHERIC</a> temperature falls from `4^(@)`C to `0^(@)C` due to <a href="https://interviewquestions.tuteehub.com/tag/expansion-980011" style="font-weight:bold;" target="_blank" title="Click to know more about EXPANSION">EXPANSION</a>.</body></html>

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