. Soils, their properties and management. Soils. Fia. 64 '—The most common types of drainage tile and other materials used for land drainage. (1), cobblestones -with smaller pieces of stone on top ; (2), flat stones placed face to face and parallel to line of ditch; (3) and (4), throated drains constructed of flat stones used m different ways; (5), pole drain; (6), triangular box drain; (7), square box drain. Note construction for admission of water along lower edge; (8), horseshoe tile laid on a board; (9), horse- shoe tile, bottom attached; (10), single sole tile with round open- ing; (11),
. Soils, their properties and management. Soils. Fia. 64 '—The most common types of drainage tile and other materials used for land drainage. (1), cobblestones -with smaller pieces of stone on top ; (2), flat stones placed face to face and parallel to line of ditch; (3) and (4), throated drains constructed of flat stones used m different ways; (5), pole drain; (6), triangular box drain; (7), square box drain. Note construction for admission of water along lower edge; (8), horseshoe tile laid on a board; (9), horse- shoe tile, bottom attached; (10), single sole tile with round open- ing; (11), double sole tile; (12), hexagonal tile; (13), round tile; (14), Y-shaped junction piece; (iS), elbow piece. 639. Tile drains. — Modern underdrainage is usually accomplished by means of short sections of pipe of burned clay or concrete, placed in the ground sufficiently deep to lower the water table in the subsoil to the desired depth within two or three days. They are given an accurate grade, and this, coupled with the smooth, hard channel which is not subject to erosion, makes them a very effi-. 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 Lyon, T. L. (Thomas Lyttleton), 1869-1938; Fippin, Elmer O. (Elmer Otterbein), 1879-1949; Buckman, Harry Oliver, 1883-. New York, Macmillan
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Keywords: ., bookauthorlyontlth, bookcentury1900, bookdecade1910, bookyear1915
