. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. Gridiron System ig. 47. The gridiron system laying out tile drains. of The single line system is one in which the outlet for tile lines is an open ditch. Tile lines in this case are independent of one another, and each must have its own outlet. Large Drainage Systems. In laying out a large drainage system it may be necessary to use several of the various methods or systems of ar- rangement. There are no har
. Agricultural engineering; a text book for students of secondary schools of agriculture, colleges offering a general course in the subject and the general reader. Agricultural engineering. Gridiron System ig. 47. The gridiron system laying out tile drains. of The single line system is one in which the outlet for tile lines is an open ditch. Tile lines in this case are independent of one another, and each must have its own outlet. Large Drainage Systems. In laying out a large drainage system it may be necessary to use several of the various methods or systems of ar- rangement. There are no hard and fast rules for any one system, though short laterals should be avoided whenever possible, because mains will drain the land for some distance on each side, and, the part of the laterals extending across the drained area of the main is largely useless as far as adding to the drained area is con- cerned. Straight Tile Lines. Tile lines should be as straight as possible, and when curves are required they should not be sharp. In addition to the fact that the flow of water is hindered to a greater extent in tile lines with sharp turns. Single-Lmc System Fig. 48. The single-line system of laying out tile Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Davidson, Jay Brownlee, 1880-1957. St. Paul, Minn. , Webb Pub. Co.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagricul, bookyear1919
