Why do sidewalks have blocks, instead of being solid?
In: 205
In my area the sidewalk is about 300-400 feet long and was all replaced a couple of years ago. They put groves in it about every 4-6 feet so that if it settles or a tree root or freezing temperature pushed it up it will crack along the grooves made in it. Also if a piece needs to be removed to do other work underground like water, gas, electrical they can easily cut at the grooves made when first pouring it without doing the whole block.
Concrete roads usually have the same grooves but are usually 10-20 ft apart.
Concrete sometimes breaks when being cut and this way you only replace 6-10 feet for repairs instead of the whole side of the street.
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