Van Nostrand's engineering magazine . Shones hydraulic syphon ejector shouldbe used. I have thus fully explained the rightmethod of laying drain pipes, because,even with the best plumbing inside ofthe house, it is of the greatest importanceto have-the outside drains of good qual-ity, properly laid, and properly jointed. The next question to be considered is:What is the proper size for housedrainsf This will, of course, depend to someextent upon the grade of the drain, thesize of the house and number of its oc-cupants, the amount of water used perhead per day, and finally, unless the rainfallin
Van Nostrand's engineering magazine . Shones hydraulic syphon ejector shouldbe used. I have thus fully explained the rightmethod of laying drain pipes, because,even with the best plumbing inside ofthe house, it is of the greatest importanceto have-the outside drains of good qual-ity, properly laid, and properly jointed. The next question to be considered is:What is the proper size for housedrainsf This will, of course, depend to someextent upon the grade of the drain, thesize of the house and number of its oc-cupants, the amount of water used perhead per day, and finally, unless the rainfalling upon the roof is stored in a cis-tern, upon the amount of rainfall to be HOUSE DRAINAGE AXI) SAXITAKV PLUMBING. 271 earned off in a certain time. This rain liver it into the same channel, which car- a most beneficial scourer for drains, ries away the fonl wastes of the habita- and unless the sewage of the dwelling is tion. Even with this double purpose in to be disposed of by irrigation, or the view the house drain need not be very. ^ S O * 83 o ^ 03 SO ^ |-1 &H « |O PS wS 5 QM O fc O E-1 O < B 5 sewers of the town built according to large, and the closer its size is propor-the separate system, which excludes tioned to the volume of water it mustthe rain-fall from the channels carrying ; carry the more self-cleansing will it , I should strongly advise to de- i To illustrate the advantage gained by 272 VAN NOSTRANDS ENGINEERING MAGAZINE. reducing the size of drains as much aspossible, or in other words by concentrat-ing the sewage flowing through it, I haveconstructed the diagram, Fig. 1, whichrepresents for different depths of flow inthe same pipe the change of velocity. Itis evident that the velocity in a pipe willgreatly diminish as the depth of thestream flowing through it diagram shows that the velocity isthe same for drains running full or halffull; it also shows that the maximumvelocity of flow occurs not when thesewer is running full, but wh
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectenginee, bookyear1879
