A Manual of Rules, Tables, and Data for Mechanical Engineers: Based on the Most Recent Investigations |
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Common terms and phrases
angle average axis BAR IRON bars beam boiler breaking weight bushels calculated carbon cast iron cent centre coal coefficient coke column combustion compressive Copper cubic feet cubic foot cubic inches cubic metre cwts deflection density depth diagonal divide Elastic Strength equal evaporation expansion Fahrenheit flange foot-pounds force formula fuel Fuss gallons given grains horse-power hour hydrogen inches in diameter INCHES WIDE kilogramme length load logarithm metal metric metric system millimetres Multiply ounce pipe plates pounds pressure proportion pulleys quantity quotient radius ratio resistance RULE second cylinder sectional area shaft solid specific gravity specific heat specimens square feet square foot square inch square yards steam steel stress stroke surface surface-ratio temperature tensile stress tons per square total heat transverse strength tubes units of heat vapour velocity volume weights and measures wire wire-gauge wood wrought iron Zoll ΙΟ
Popular passages
Page 353 - B with the sound velocity where y is the ratio of the specific heat at constant pressure to the specific heat at constant volume, and p is the gas pressure.
Page 416 - A Report to the Navy Department of the United States on American Coals, Applicable to Steam Navigation, and to other purposes.
Page 24 - To find the area of a segment of a circle: Find the area of the sector which has the same arc, and also the area of the triangle formed by the chord of the segment and the radii of the sector.
Page 18 - ED at the vertex, equal anil parallel to the conjugate axis, and bisected by the transverse axis. The nature of the hyperbola is such that the difference of the distances of any point in the curve from the foci is always the same, and is equal to the transverse axis. In a hyperbola the squares of any two ordinates to the transverse axes are to each other as the rectangles of their abscisses. PROBLEM XLV. — To describe a hyperbola, the transverse and conjugate axes being given, Fig. 67. — Draw...
Page 28 - From 3 times the diameter of the sphere subtract twice the height of the segment; multiply the difference by the square of the height, and by '5236.
Page 325 - The clay, well washed, is made up into little cubes that fit the commencement of the groove, after having been heated to redness ; and their subsequent contraction by heat is determined by allowing them to slide from the top of the groove downwards, till they arrive at a part of it through which they cannot pass.
Page 27 - RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity.
Page 622 - Mr. Stoney says that the working load on rubble masonry, brickwork or concrete, rarely exceeds one-sixth of the crushing weight of the aggregate mass ; and that this seems to be a safe limit. In an arch, the calculated pressure should not exceed one-twentieth of the crushing pressure of the stone. ROPES. — For round ropes, the working load should not exceed a seventh of the ultimate strength, and for flat ropes, one-ninth.
Page 889 - ... extent of a perfect vacuum. In flowing through a nozzle of the best form, the steam expands to the external pressure, and to the volume due to this pressure, so long as it is not less than 58 per cent of the internal pressure. For an external pressure of 58 per cent, and for lower percentages, the ratio of expansion is 1 to 1.624.
Page 331 - ... gas is known, pressure being, as explained by Joule, the impact of those numerous small atoms striking in all directions, and against the sides of the vessel containing the gas. The greater the number of these atoms, or the greater their aggregate weight, in a given space, and the higher the velocity, the greater is the pressure. A double weight of a perfect gas, when confined in the same space, and vibrating with the same velocity...