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" ... material, even when the drain is completed, offers an imperfect resistance, but the constant pressure together of the sides, even when it does not produce a fracture of the soil, catches hold of the feet of the tile and breaks it through the crown.... "
Draining for Profit, and Draining for Health - Página 79
por George Edwin Waring - 1867 - 238 páginas
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The Quarterly Review, Volumen86

William Gifford, Sir John Taylor Coleridge, John Gibson Lockhart, Whitwell Elwin, William Macpherson, William Smith, Sir John Murray IV, Rowland Edmund Prothero (Baron Ernle) - 1850 - 612 páginas
...rising. A horseshoe tile, which may he a tolerably secure conduit in a drain of 2 feet, in one of 4 feet becomes an almost certain failure. As to the...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect resistance, but the...
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The Quarterly review, Volumen86

1850 - 608 páginas
...rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of 2 feet, in one of 4 feet becomes an almost certain failure. As to the...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect resistance, but the...
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Farm Drainage: The Principles, Processes, and Effects of Draining Land with ...

Henry Flagg French - 1859 - 408 páginas
...so. " A horse-shoe tile, which may be a tolerably secure conduit in a drain of 2 feet, in one of 4 feet becomes an almost certain failure. As to the...feet of the tile, and breaks it through the crown. When the Regent's Park was first drained, large conduits were in fashion, and they were made circular...
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Report of [E. Holmes] the Secretary and Transactions of the County ...

Maine State Agricultural Society - 1853 - 884 páginas
...drain the greater the pressure, the more certain the rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of two feet, in one of four...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect resistance, but the...
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Farm Drainage: The Principles, Processes, and Effects of Draining Land with ...

Henry Flagg French - 1859 - 410 páginas
...tolerably secure conduit in a drain of 2 feet, in one of 4 feet becomes an almost certain failure. A* I to the longitudinal. fracture, not only is the tile subject to be broken by one of those slips whieh are sj troublesome in deep draining, and to which the lightly-filled material, even when the...
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Annual Report of the Ohio State Board of Agriculture, Volumen15,Parte1860

Ohio State Board of Agriculture - 1861 - 664 páginas
...the greater the pressure and the more certain the rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of two feet, in one of four...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect resistance, but the...
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Annual Report, Volumen15

Ohio State Board of Agriculture - 1861 - 662 páginas
...the greater the pressure and the more cercain the rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of two feet, in one of four...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect reeistance, but the...
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The Principles and Practice of Land Drainage: Embracing a Brief History of ...

John Hancock Klippart - 1867 - 478 páginas
...the greater the pressure and the more certain the rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of two feet, in one of four...lightly-filled material, even when the drain is completed, oilers an imperfect resistance, but the constant pressure together of the sides, even when it does...
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The London Quarterly Review, Volumen86

1850 - 346 páginas
...rising. A horseshoe tile, which may be a tolerably secure conduit in a drain of 2 feet, in one of 4 feet becomes an almost certain failure. As to the...so troublesome in deep draining, and to which the lightly filled material, even when the drain is completed, offers an imperfect resistance, but the...
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Farm Drainage: The Principles, Processes, and Effects of Draining Land with ...

Henry Flagg French - 1915 - 424 páginas
...uonduit in i train of S feet, in COB of 4 feet becomes an almost certain failure. At to the Itu.gitudina! fracture, not only is the tile subject to be broken by one of those slips whieh are so troublesome in deep draining, and to which the lightly-filled material, even when the...
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