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" ... inches. The whole space between the collar and the pipe on each side of the collar is open, and affords no resistance to the entrance of water; while at the same time the superincumbent arch of the collar protects the junction of two pipes from the... "
Draining for Profit, and Draining for Health - Página 84
por George Edwin Waring - 1867 - 238 páginas
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Essays on Agriculture

Thomas Gisborne - 1854 - 666 páginas
...protects the 110 AGRICULTURE. junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only...illusory. Small particles of soil trickle down the sidesof every drain, and the first flow of water will deposit them in the vacant space between the...
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Essays on agriculture, repr. from the Quarterly review

Thomas Gisborne - 1854 - 286 páginas
...of the collar protects the junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only...illusory. Small particles of soil trickle down the sidesof every drain, and the first flow of water will deposit them in the vacant space between the...
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Annual Report of the Ohio State Board of Agriculture, Volumen22

Ohio State Board of Agriculture - 1868 - 750 páginas
...of the collar protects the junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only on an inch of each end, and lying hollow, might prove weak and liable te fracture, by weight pressing on it from...
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The Principles and Practice of Land Drainage

John Hancock Klippart - 1861 - 486 páginas
...of the collar protects the junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only...weight pressing on it from above; but the fear was illu' sory. Small particles of soil trickle down the sides of every drain, and the first flow of water...
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The Principles and Practice of Land Drainage: Embracing a Brief History of ...

John Hancock Klippart - 1867 - 478 páginas
...of the collar protects the junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only...prove weak, and liable to fracture by weight pressing bn it from above; but the fear was illusory. Small particles of soil trickle down the sides of every...
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Annual Report, Volumen22

Ohio State Board of Agriculture - 1868 - 760 páginas
...of the collar protects the junction of two pipes from tbe intrusion of particles of soil. We confess to some original misgivings that a pipe resting only on an inch of each end, and lying hollow, might prove weak and liable to fracture, by weight pressing on it from...
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The Principles and Practice of Land Drainage: Embracing a Brief History of ...

John Hancock Klippart - 1888 - 514 páginas
...of the collar protects the junction of two pipes from the intrusion of particles of soil. We confess to some original misgivings that a pipe resting only...lying hollow, might prove weak, and liable to fracture bv weight pressing on it from above; but the fear was illu' sory. Small particles of soil trickle down...
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Farm Drainage: The Principles, Processes, and Effects of Draining Land with ...

Henry Flagg French - 1915 - 424 páginas
...of the collar protects the junction of two pipes from the inVrusion of particles of soil. We confess to some original misgivings, that a pipe resting only...drain, and the first flow of water will deposit them ia the vacant space between the two collars. The bottom, if at all soft, will also swell np into any...
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