DRAINAGEDRAINAGE Now is the time to think about drainage. In most places is isn't necessary, but if the soil is a heavy clay, likely to get wet and soggy in the spring and stay that way, it is well to lay lines of agricultural tile about a foot or two below the surface to collect this extra moisture and drain tile catch-basin construction. it into a dry well or a sewer somewhere. The leaders from the house also have to be taken care of, and drain lines and catch basins provided for areas which necessarily may be so graded that water cannot run off, such as walled gardens, courts, terraces, and the like. All these drains can be led into a comprehensive system of drains leading to a single large dry well or to the municipal storm sewer. This is better and cheaper than building a separate dry well for each catch basin and leader. Catch basins of varying sizes can be made of two lengths of vitreous hub and spigot tile. Surface gratings come in several stand and sizes and styles and simply fit into the bell of the top tile. All these tile lines are laid so that they pitch at least one quarter inch per foot, and the joints are left open except where a line passes close to a Maple, Elm, Willow, or Linden; here it is best to substitute cast-iron pipe with tight joints, for the roots of these trees will soon enter and clog any other type of drain line. Next page: utilities... ©2004 garden planning dot us |
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