Definitions
from The Century Dictionary.
- To drain by forming channels under ground.
- noun A drain or trench placed under ground.
from the GNU version of the Collaborative International Dictionary of English.
- noun An underground drain or trench with openings through which the water may percolate from the soil or ground above.
- transitive verb To drain by forming an underdrain or underdrains in.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun An
underground drain ortrench withopenings through which thewater maypercolate from thesoil or ground above. - verb transitive To
drain by forming an underdrain or underdrains in.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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So we captured all of that in what we call underdrain pipe.
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If the depression holds water for more than four hours, dig 10 to 15 inches deeper and provide an underdrain of gravel.
Green Scene: Some ideas for an environmentally friendly landscape 2011
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As it approaches the project, it will be funneled into underdrain piping systems so that it runs underneath the road through those systems.
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Shock drainage is achieved by a fast opening and closing of the valves or gates connected to the underdrain system of the filter.
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The filtered water is then collected by an underdrain system and conveyed to the clear water tank.
1. Historical development and experience with water treatment 1996
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Support layer and underdrain: gravel covered by perforated metal tray.
3. Technologies 1985
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A very wide range of materials are used for underdrain construction.
2.1. Open ditches 1982
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If the land is wet on which we design making a lawn, we should first thoroughly underdrain it by laying tiles two rods apart, and two feet below the surface.
Your Plants Plain and Practical Directions for the Treatment of Tender and Hardy Plants in the House and in the Garden James Sheehan
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The best way undoubtedly is to underdrain the land, and then to distribute the sewage on the principle of intermittent downward filtration.
Scientific American Supplement, No. 484, April 11, 1885 Various
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We must underdrain all the land we cultivate, that Nature has not already underdrained, and we shall cease complaints of the seasons.
Farm drainage The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles Henry Flagg French
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