Six Lectures Upon School Hygiene

Cover Six Lectures Upon School Hygiene
Six Lectures Upon School Hygiene
Draper, Frank Winthrop, 1843-1909
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ence to the wastes which lead from the various fixtures.
On the contrary, there is every probability that the gases will, on account of the warmer atmosphere of the rooms, be drawn into them through the different plumb- ing appliances with which they are furnished. Hence, some barrier must be placed in the line of all discharge pipes, which, by rendering it difficult for the foul air to* pass, will cause it to escape through the unobstructed channel of the soil pipe. In other words, these disch
...arge pipes nhist be trapped. The house drain has already been trapped, to prevent the escape inwards of the gas from the sewer, but in addition to this, each water closet, slop sink, wash bowl, bath tub, sink and set of laundry tubs should be provided with a reliable trap, placed as n|ar to the fixture as possible.
In considering the best form of trap for fixtures, it is needless to enter into the details of the many varieties which have been placed upon the market. All that it is necessary to remember, in selecting a trap for such purposes, is that the best is one, which will allow the water in it " to be entirely changed every time a good flush of water is sent into it." Hence, for reasons which have already been stated, the S trap seems for general use inside the house to be again the most desirable.


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