A handbook of house sanitation : for the use of all persons seeking a healthy home ; a reprint of those portions of Mr. Bailey-Denton's lectures on sanitary engineering given before the school of military engineering, Chatham, which related to the "dwelling."

  • John Bailey Denton
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: A handbook of house sanitation : for the use of all persons seeking a healthy home ; a reprint of those portions of Mr. Bailey-Denton's lectures on sanitary engineering given before the school of military engineering, Chatham, which related to the "dwelling.". Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

    194/254 (page 178)
    the best lime, though concrete, consisting of one part of blue lias hme, and six parts of gravel and sand—or of the proportions which are favoured in France, consisting of two parts of broken stone to one of mortar, the latter being composed of three parts of hme to five of sand,—with an inside rendering of Portland cement and sand in equal proportions, will form a tank of unexceptional character. The thickness of concrete will depend upon the soil in which the tank is constructed. If it be of a slipping character the thickness must be increased. In some cases it will be found desirable, instead of render- ing the inside with cement only, to line the concrete with 4^-inch brickwork, laid in cement and well grouted with a parting or joint of the same material between the brickwork and the concrete. Where the tanks are of large dimensions, it will be necessary to support the roof with brick piers and buttresses, and construct the roofs of brick or concrete. The cost of these tanks will vary from ;;^5 to ^7 per 1,000 gallons. A tank 16 feet by i2| feet, and 8 feet deep, will hold more than sufficient to supply five persons with 15 gallons of water for 120 days, after allowing for evaporation, while a tank 16 feet square, and 12 feet deep will hold more than sufficient to supply 10 persons with 15 gallons for 120 days. In the one case the storage space will be 9,600 gallons, and in the other 19,200. It may be useful to remember that a rectangular space 16 feet by 10 feet holds 1,000 gallons in every foot of depth and that a circular one 14^ in diameter holds about the same number of gallons, LXXXIII.—Cisterns for Service within the Dwelling. — It is very unsatisfactory to be obliged to acknowledge that after obtaining water of a potable character from river, spring, or well, or after conserving it in tanks, it may lose its good qualities in the service-cistern into which it may be raised for household supply ; but this is found to-be the case in very many instances. We have now been led by chemical analysis to look upon water as perhaps the most dangerous substance upon which human beings have to depend for life and health ; and, at the same time, to admit that, although we may obtain what is pure at its original source, and convey it in that condition to the dwelling, it may soon become defiled by the vapours, gases, and dust which ]:)ervade the atmosphere surrounding cisterns, or by the filthy con- dition of the cisterns themselves, or by the injurious character of the pipes by which the water is distributed for use. There is no doubt whatever that water is often most injuriously affected by foul cisterns and foul pipes. Nevertheless, there are but few exceptions in which isolated dwellings, beyond the reach of a public supply, can exist without cisterns, while there are many in which