Practical Work of Constructing Sidewalks
A.T. Gridley, City Engineer, Aurora, Ind.
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The specifications uniformly given by myself for cement sidewalk paving are: First, excavate to a uniform depth of eleven inches below the finish grade; second, fill with stone-coal cinders (not ashes) seven inches when well rammed to place; when the concrete is ready dampen the cinders to prevent absorption of water from the concrete. Third, on the top of the rammed cinders fill three inches deep with cement concrete prepared as hereinafter described, when thoroughly rammed to place. Fourth, then finish with one inch of fine cement mortar as hereinafter described.