AYLA1 AYLA1
  • 22-01-2015
  • Chemistry
contestada

why do sidewalks have built-in cracks every few feet

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damlacik
damlacik damlacik
  • 22-01-2015
because it cracks. Water gets in it and when its cold it frezes which forces get wider......if you could help me with my question on my cite it would be great thanks 
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