Experimental Engineering (Google eBook)

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U.S. naval institute, 1911 - Mechanical engineering - 311 pages
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Page 236 - a third pat is exposed in any convenient way in an atmosphere of steam above boiling water, in a loosely closed vessel for 5 hours. These pats, to satisfactorily pass the requirements, shall remain firm and hard and show no signs of distortion, checking, cracking, or disintegrating.
Page 236 - kept in moist air for a period of 24 hours. (a) A pat is then kept in air at normal temperature and observed at intervals for at least 28 days. (b) Another pat is kept in water maintained as near 70
Page 287 - of best quality, free from grit, acid, fibrous, and other foreign matter likely to clog or injure the burners or valves. (2) The unit of quantity to be a gallon of 231 cubic inches at a standard temperature of 60 F. For every variation of temperature of 10 F. from the standard,
Page 236 - 24 hours in moist air 50-100 7 days, 1 day in moist air, 6 days in water... 100-200 28 days, 1 day in moist air, 27 days in water... 200-300 One Part
Page 236 - 24 hours in moist air 150-200 * 7 days, 1 day in moist air, 6 days in water... 450-550 28 days, 1 day in moist air, 27 days in water.. 550-650 One Part
Page 229 - range of temperature in the room in which the tests are made, a very dry or humid atmosphere, and other irregularities, vitally affect the rate of setting.
Page 236 - Parts Standard Sand. 1 days, 1 day in moist air, 6 days in water... 25- 75 28 days, 1 day in moist air, 27 days in water... 75-150 Constancy of
Page 236 - Cement, Three Parts Standard Sand. 1 days, 1 day in moist air, 6 days in water... 150-200 28 days, 1 day in moist air, 27 days in water... 200-300 Natural
Page 124 - to the bottom of the feeding canal, or reservoir, should be at least three times the head of water on the crest. For a weir with end contractions, a similar distance should exist between the vertical edges of the
Page 259 - tons or less delivered. The gross sample thus collected should contain the same proportion of lump and fine coal as exists in the whole shipment. It should be protected from the weather, in order to avoid gain or loss in moisture and should be immediately quartered down to a smaller sample, according to the following method

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