Cyclopedia of Heating, Plumbing and Sanitation: Heat. Mechanical drawing. Sheet metal workAmerican technical society, 1909 - Heating |
Common terms and phrases
acid amount atomic weight atoms average bacteria bacteriology basins bottom burn calcium carbon dioxide cent center of pressure chemical chloride cholera cities coal coefficient combustion compounds concrete construction consumption cubic depth diameter diphtheria discharge disease elements embankment Engineers equal feet per second filter filtration fire flow formula gallons gases germs gravel gravity ground water heat horizontal hose hydrant hydraulic hydrochloric acid hydrogen impervious important infected iron lime loss of head masonry material maximum meter method milk molecule necessary nitrogen nozzle obtained ordinary orifice oxygen placed porous pounds pressure pumps quantity rainfall reservoir river salt sand sanitary sediment settling basins sewage slope sodium sodium carbonate soil square inch standpipe stratum stream substances sulphur sulphuric acid surface Table tank temperature thickness tion typhoid fever usually valve velocity vertical water supply weight weir
Popular passages
Page 124 - The design and construction of the outlet arrangements is one of the most important and at the same time most difficult features of the work.
Page 272 - ... done by infinitely small organisms. They are the important, almost the only, agents of universal hygiene; they clear away more quickly than the dogs of Constantinople or the wild beasts of the desert the remains of all that has had life; they protect the living...
Page 32 - This ratio of .97 to .99 is called the coefficient of velocity. 17. Use of Orifices for Measuring Water. In making use of an orifice for measuring water it is desirable, for the sake of accuracy, that the orifice be constructed in such a way that the water in passing out will touch the inner edge only. This may be done by making the orifice of a very thin plate, or cutting it on a bevel so that the water will not come in contact with the side, as shown in Fig. 22. To get accurate results an orifice...
Page 72 - Large users of water for such purposes are office buildings and stores, hotels, factories, elevators, railroads, breweries, sugar refineries, and a few other industries. In large cities the use for commercial purposes is likely to be more than in small cities. Various statistics show a consumption for these purposes of 10 to 40 gallons per capita. The nature of the industries will determine very largely this item. (3) Public Use. This includes the water used for schools and other public buildings,...
Page 214 - In case we desire to express 5 molecules of a compound, each molecule containing two atoms of hydrogen, one atom of sulphur and four atoms of oxygen, we write 5H2SO4.
Page 192 - The first filter of which we have any record was established in 1829 for the Chelsea Water Company, of London. The chief object of this filter was to remove turbidity, and in this it was a success. Its value in improving the water from a hygienic standpoint was also appreciated, although the principles underlying its action were not understood until some years later. As a consequence of the good results obtained from this filter, the filtration of all river-water supplies of London was made compulsory...
Page 303 - ... palace turrets, men and beasts tramped knee-deep in noisome mire. This was at intervals varied with fetid rivulets and open cesspools ; every church was crammed with rotting corpses and surrounded with graveyards, sodden with cadaveric liquids, and strewn with disinterred bones. Round these charnel houses and pestiferous churches were piled old decaying wooden houses, their sole air being these deadly exhalations, and their sole water supply being these polluted streams or wells dug in this reeking...
Page 108 - Curbs necting and operation are important. We will here consider only the methods of sinking wells in earth or soft strata. As regards methods of sinking there are two principal kinds of wells — the closed-end well or driven well proper, and the openend well. The Closed-End or Driven Well. In this form the well tube consists of a wrought-iron tube from 1 to 4 inches in diameter, closed and pointed at one end, and perforated for some distance therefrom. The tube thus prepared is driven into the...
Page 347 - REVIEW QUESTIONS. PRACTICAL TEST QUESTIONS. In the foregoing sections of this Cyclopedia numerous illustrative examples are worked out in detail in order to show the application of the various methods and principles. Accompanying these are examples for practice which will aid the reader in fixing the principles in mind. In the following pages are given a large number of test questions and problems which afford a valuable means of testing the reader's knowledge of the subjects treated.
Page 215 - In computing specific gravity we find the weight of a given volume of the substance, and the weight of an equal volume of water.