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" The mean pressure of the atmosphere is usually estimated at 14.7 pounds per square inch, so that with a perfect vacuum it will sustain a column of mercury 29.9 inches or a column of water 33.9 feet high. To find the pressure in pounds per square inch... "
The Engineers' Review - Page 33
1905
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Rider's Little Engineer: A Pocket-book of Engineering and Other Data ...

Joseph Benjamin Rider - Engineering - 1901 - 480 pages
...ATMOSPHERE is estimated at 14.7 Ibs. per square inch. With a perfect vacuum, at sea level, it will therefore sustain a column of mercury 29.9 inches or a column of water 33.9 feet high. ENTRAINED WATER. In the mountains with light air (low barometric pressure) the moisture carried by...
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The Pittsburgh Reduction Co. Manufacturers of Aluminum and Aluminum Alloys ...

Pittsburgh Reduction Company - Aluminum - 1904 - 268 pages
...as the square of the velocity. The mean pressure of the atmosphere is usually estimated at 14.7 Ibs. per square inch, so that with a perfect vacuum it...mercury 29.9 inches or a column of water 33.9 feet high. To find the pressure in pounds per square inch of a column of water. Multiply the height of the column...
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Stationary engineering ...

Joseph Gerald Branch - Technology & Engineering - 1906 - 991 pages
...of elevation is equal to one-half pound pressure per square inch. This allows for ordinary friction. The mean pressure of the atmosphere is usually estimated...29.9 inches, or a column of water 33.9 feet high. All water used for boiler purposes, unless it is rain water collected from roofs, or distilled water,...
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Water Softening and Treatment: Condensing Plant, Feed Pumps and Heaters for ...

William Henry Booth - Feed-water purification - 1906 - 308 pages
...1000 303-16 346-47 389-78 433-09 45 50 19-49 21-65 170 180 73-63 77.96 t pounds to the square inch, so that with a perfect vacuum it will...29.9 inches, or a column of water 33.9 feet high. Doubling the diameter of a pipe increases its capacity four times. Friction of liquids in pipes increases...
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Water Softening and Treatment: Condensing Plant, Feed Pumps and Heaters for ...

William Henry Booth - Water - 1906 - 308 pages
...900 389-78 40 17-32 160 69-29 1000 433-09 45 19-49 170 73-63 50 21-G5 180 77-96 i pounds to the square inch, so that with a perfect vacuum it will sustain a column of mercury 29'9 inches, or a column of water 33'9 feet high. Doubling the diameter of a pipe increases its capacity...
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Hand-book of American Gas-engineering Practice

Nisbet Latta - Gas manufacture and works - 1907 - 466 pages
...as the square of the velocity. The mean pressure of the atmosphere is usually estimated at 14.7 Ibs. per square inch, so that with a perfect vacuum it...29.9 inches or a column of water 33.9 feet high at sea-level. To find the pressure in pounds per square inch of a column of water, multiply the height...
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Erecting and operating: an educational treatise for constructing engineers ...

Nehemiah Hawkins - Civil engineering - 1907 - 583 pages
...The mean pressure of the atmosphere is usually estimated at 14.7 Ibs. per square inch at sea level, so that with a perfect vacuum it will sustain a column of mercury 30 inches, or a column of water 34 feet high. * * * * 9. To find the capacity of a cylinder in gallons...
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The Photographic Annual

Photography - 1908
...large aperture. ATMOSPHERE. The mean pressure of the atmosphere is usually estimatedat 14'7 lbs. per square inch, so that with a perfect vacuum it will sustain a column of mercury 29'9 in. or a column of water 33 '9 ft. high. ATOMIC WEIGHTS. Sect. 31, p. 172. AURIC CHLORIDE....
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Useful information for practical men compiled for E. I. Du Pont de Nemours ...

E.I. du Pont de Nemours & Company - Engineering - 1908 - 216 pages
...friction of water in pipes." The mean pressure of the atmosphere is usually estimated at 14.7 nnds per square inch, so that with a perfect vacuum it will sustain olumn of mercury 29.9 inches, or a column of water 33.9 feet high sea level. To find the pressure in...
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Railroad Structures and Estimates

John Wilson Orrock - Railroads - 1909 - 270 pages
...atmosphere is estimated at 14.7 pounds per square inch. With a perfect vacuum at sea level it will therefore sustain a column of mercury 29.9 inches, or a column of water 33.9 feet high. This is the theoretical height that a perfect pump would draw water. Owing to air in the water, valve...
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