Re: why is it necessary to patch cracks in the sidewalk before winter comes

Date: Mon Oct 9 05:53:17 2000
Posted By: Glenn Miles, Staff, Warheads, Hunting Engineering
Area of science: Other
ID: 970437245.Ot

Message:


I guess it is to stop water getting down into the cracks and causing more 
damage.  If you live in a cold part of country, you may have seen cracked 
pipes, where the water has frozen and expanded.

The same things will happen in the cracks in the sidewalk.  Rainwater will 
naturally accumulate in the cracks, and if it gets cold enough it will 
freeze and force the crack to get bigger.  So it is better to fix the 
cracks before winter comes, so that the sidewalk doesn't worse and worse.

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