Two-Course Work

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“For two-course floors and pavements, a concrete base of about four inches thick, mixed 1:3:5 (that is, one sack of cement, 3 cubic feet of sand, and 5 cubic feet of gravel), is first placed in the forms."—The Federal Digest, 1921


The Federal Digest Farm Economy (Minneapolis, MN: Better Farming Association, 1921)


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