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" The collar for a one and a half inch pipe has a circumference of nine 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... "
Annual Report of the Ohio State Board of Agriculture - Página 113
por Ohio State Board of Agriculture - 1868
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Essays on Agriculture

Thomas Gisborne - 1854 - 666 páginas
...prepared for them at the bottom of the drain should be worked to their size and shape with great accuracy. To one advantage which is derived from the use of...can find entrance into the conduit. The collar for al|-inch pipe has a circumference of 3 inches. The whole space between the collar and the pipe on each...
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Farm Drainage: The Principles, Processes, and Effects of Draining Land with ...

Henry Flagg French - 1859 - 410 páginas
...for them at the bottom of the drain should be worked to their size and shape with great accuracy. " To one advantage which is derived from the use of...a one and a half inch pipe has a circumference of nine inches. The whole space between the collar and the pipe, on each side of the collar, is open,...
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Annual Report, Volumen15

Ohio State Board of Agriculture - 1861 - 662 páginas
...for them at the bottom of the drain should be worked to their size and shape with great accuracy. " To one advantage which is derived from the use of...can find entrance into the conduit. The collar for a !•£ inch pipe has a circumference of three inches. The whole space between the collar and the pipe...
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The Principles and Practice of Land Drainage

John Hancock Klippart - 1861 - 486 páginas
...for them at the bottom of the drain should be worked to their size and shape with great accuracy. " To one advantage which is derived from the use of...can find entrance into the conduit. The collar for a 1J inch pipe has a circumference of three inches. The whole space between the collar and the pipe on...
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The Principles and Practice of Land Drainage: Embracing a Brief History of ...

John Hancock Klippart - 1867 - 478 páginas
...for them at the bottom of the drain should be worked to their size and shape with great accuracy. " To one advantage which is derived from the use of...can find entrance into the conduit The collar for a 1 J inch pipe has a circumference of three inches. The whole space between the collar and the pipe...
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Draining for Profit, and Draining for Health

George Edwin Waring - 1867 - 264 páginas
...thorough. The collars should be examined with equal care. Con cerning the use of these, Gisborne says : " To one advantage which is derived from the use of...can find entrance into the conduit. The collar for al|-inch pipe ' has a circumference of three inches. The whole space " between the collar and the pipe...
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Draining for Profit, and Draining for Health

George Edwin Waring (Jr.) - 1867 - 264 páginas
...thorough. The collars should be examined with equal care. Con cerning the use of these, Gisborne says: " To one advantage which is derived from the use of " collars we have not yet adverted—the increased facility " with which free water existing in the soil can find entrance into...
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Annual Report, Volumen22

Ohio State Board of Agriculture - 1868 - 760 páginas
...under-ground streams should in places wash away the surrounding earth. Gisborne, a writer of authority on such matters, uses the following language in regard...into the conduit. The collar for a one and a half iuch pipe has a circumference of three inches. The whole space between the collar and the pipe, on...
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The Principles and Practice of Land Drainage: Embracing a Brief History of ...

John Hancock Klippart - 1888 - 514 páginas
...their sine and shape with great accuracy. "To one advantage which is derived from the use of collars wo have not yet adverted — the increased facility with...can find entrance into the conduit. The collar for a 1 j inch pipe has a circumference of three inches. The wholo space between the collar and the pipe...
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Draining for Profit, and Draining for Health

George Edwin Waring - 1911 - 264 páginas
...thorough. The collars should be examined with equal care. Con cerning the use of these, Gisborne says : " To one advantage which is derived from the use of...with which free water existing in the soil can find eh"trance into the conduit. The collar fora 1-inch pipe ' has a circumference of three inches. The...
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