Author Question: Explain why sidewalks need grooves across the surface. What will be an ideal ... (Read 62 times)

kshipps

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Explain why sidewalks need grooves across the surface.
 
  What will be an ideal response?

Question 2

Compare a construction joint and a control joint.
 
  What will be an ideal response?



iceage

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Answer to Question 1

Sidewalks need shallow grooves or joints across the surface at three-foot intervals to control cracking
due to expansion.



Answer to Question 2

A construction joint is a place where one pouring of concrete stops and another begins. A control joint
is a planned break that permits concrete to expand and contract without cracking. Control joints are
placed at equally spaced intervals in the slab.




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kshipps

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Both answers were spot on, thank you once again



iceage

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