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" A velocity of 6 inches will lift fine sand, 8 inches will lift sand as coarse as linseed, 12 inches will sweep along fine gravel, 24 inches will roll along rounded pebbles an inch diameter, and it requires 3 feet per second at the bottom to sweep along... "
Sewers and Drains for Populous Districts: With Rules and Formulae for ... - Сторінка 175
автори: Julius Walker Adams - 1880 - 228 стор.
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A System of Mechanical Philosophy, Том 2

John Robison - 1822 - 50 стор.
...along fine gravel; 24 inches, will roll along rounded pebbles an inch diameter; and it requires three feet per second at the bottom to sweep along shivery angular stones of the size of an egg. The manner in which unwearied nature carries on some of these operations is curious, and deserves to...
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Encyclopaedia Britannica; Or A Dictionary of Arts, Sciences, and ..., Том 18

1823
...along fine gravel; 24 inches will roll along rounded pebbles an inch diameter ; and it require» three Q|\ + l h j ? y# g yX-" I f ˆ . | ~[B % z 3 1r2. K/* 'G ) q 8; The manner in which unwearied nature carries on how c*m« some of these operations is curious, and...
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The Nautical Magazine, Том 1

1832
...gravel ; twenty-four inches, pebbles one inch in diameter ; while it would require three feet per second to sweep along shivery angular stones of the size of an egg. When the seaman recollects the velocity of some tides over banks, he will, perhaps, be inclined to...
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Mathematics for Practical Men: Being a Common-place Book of Principles ...

Olinthus Gregory - 1834 - 427 стор.
...gravel ; twenty-four inches will roll alona; rounded pebbles an inch in diameter ; and it requires three feet per second at the bottom to sweep along shivery angular stones of the size of an egg. (Robison on Rivers.} 10. Mr. Eytelwein, a German mathematician, has devoted much time to inquiries...
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Minutes of Proceedings of the Institution of Civil Engineers, Том 24

Institution of Civil Engineers (Great Britain) - 1865
...velocity of current to be running through the sewers equal to about 2J feet per second, or about I| mile per hour, to prevent the soil from depositing...them, and the ordinary volume of the sewage flowing through them, vary considerably. But the Author does not hesitate to rely upon these opinions, confirmed...
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Course of Civil Engineering: Comprising Plane Trigonometry, Surveying, and ...

John Gregory - 1843
...gravel ; twenty-four inches will roll along rounded pebbles an inch in diameter; and it requires three feet per second at the bottom to sweep along shivery angular stones of the size of an egg." DRAINING OF BOGS. Before entering upon the method of draining bogs, it may not be uninteresting to...
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De Bow's Review of the Southern and Western States, Том 9

1850
...gravel, twenty-four inches will roll along round pebbles an inch in diameter, and it requires three feet per second, at the bottom, to sweep along shivery angular stones, the size of an egg. Sec p. 4t'>(i, voL ii. "We learn, from the same authority, that tho velocity of...
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The Natural History Review, Том 9

1862
...gravel, twenty-four inches will roll along rounded Deb-' " bles an inch diameter, and it requires three feet per second at the " bottom to sweep along shivery angular stones of the size of an egg."t" If, therefore, we are justified in assuming a colder climate than, that now existing, we should...
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Mathematics for Practical Men: Being a Common-place Book of Principles ...

Olinthus Gregory - 1863
...gravel ; twenty-four inches will roll along rounded pebbles an inch in diameter ; and it requires three feet per second at the bottom to sweep along shivery angular stones of the size of an egg. ( Robison on Rivers.} 10. Mr. Eytelwein, a German mathematician, has devoted much time to inquiries...
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On the Main Drainage of London, and the Interception of the Sewage from the ...

1865
...bottom will just begin to work up fine clay fit for pottery, and however firm and compact it may bo, it will tear up." " A velocity of 6 inches will lift...them, and the ordinary volume of the sewage flowing through them, vary considerably. But the Author does not hesitate to rely upon these opinions, confirmed...
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