Wholesome houses : a handbook of domestic sanitation and ventilation / by E. Gregson Banner.

  • Banner, Edward Gregson.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: Wholesome houses : a handbook of domestic sanitation and ventilation / by E. Gregson Banner. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    CHAPTER III. THE GENERATION OF SEWER GAS, ITS ENTRANCE INTO HOUSES, AND THE IMPORTANCE OF VENTILATING HOUSE DRAINS AND SOIL PIPES. In communicating the results of his experiments on the production of gas from sewage, Dr. Letlieby stated that a gallon of this refuse, containing 128'8 grains of organic matter, gave, when shut out from the air, in nine weeks, 1'2 cubic inches of gas an hour, containing 73*833 of marsh effluvia, 15*899 of carbonic acid, 10*187 of nitrogen, and 0*081 of sulphuretted hydro- gen. Mr. Baldwin Latham also informs us that the air of every sewer and house drain is daily subjected to frequent expansions and contractions caused by the admittance of hot or cold water, and so great is the force exerted by the expanding air of drains under an increased temperature that no ordinary trap will resist its pressure.* Again, the inlets by which sewer gas may find its way into a house are very numerous. Dr. Carpenter mentions the following under the plans in use prior to 1S75:— “ 1. It may find, admission, through the trap of the water-closet when no ventilation has been provided for the soil pipe of the closet itself. “ 2. It may enter through defective joints or fissures in the soil pipe, such defects being the result of bad workmanship, of accident, or decay. * Professor Eeynolds appears to make light of this pressure.
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