One-Course Work
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“Single-course pavement is usually made five inches thick. Proportions for this should be 1:2:3. Concrete for a single course should be mixed to such a consistency that enough mortar will rise to the surface on light tamping to permit of finishing with a wooden float."—The Federal Digest, 1921
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The Federal Digest Farm Economy (Minneapolis, MN: Better Farming Association, 1921)
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