wearing course

noun

1. Also called: carpet.  topping. the top layer of a road that carries the traffic; road surface

Example Sentences

Bitulithic or Warrenite.—The stone employed for these types is graded down from a size about equal to one-half of the thickness of the wearing course, and stone passing a 1¼ or 1½-inch screen is usually specified.

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The wearing course of the mixed macadam is composed of graded broken stone or gravel and a bituminous binder.

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Usually if the traffic is of a character requiring a concrete foundation, it is desirable to use a better wearing course than the mixed macadam, and the asphaltic concrete or sheet asphalt type of surface is employed.

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It is the usual practice to permit gravel to be used for the foundation course in which the pebbles are as large as will pass a 3½-inch circular screen opening, and for the wearing course, as large as will pass a 2½-inch circular screen opening.

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If larger pebbles are allowed in the wearing course, the surface is certain to become rough after a time.

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