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Author Question: Explain why sidewalks need grooves across the surface. What will be an ideal ... (Read 18 times)

kshipps

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on: Jul 21, 2018
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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Reply #1 on: Jul 21, 2018
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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Reply #2 on: Jul 21, 2018
Both answers were spot on, thank you once again


iceage

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Reply #3 on: Jul 21, 2018
Great! Please up vote :D


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