File:American homes and gardens (1908) (17968381089).jpg

Title: American homes and gardens
Identifier: americanhomesgar51908newy (find matches)
Year: 1905 (1900s)
Authors:
Subjects: Architecture, Domestic; Landscape gardening
Publisher: New York : Munn and Co
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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tank'is filled. The discharge of the syphon should be a four- inch earthenware drain pipe with two-inch tee branches on each side, laid so that there is a branch on each side every four feet. From these lateral tee lines two-inch earthen- ware pipes are laid with open-joint collars. These pipes should be laid fourteen inches underground and covered with five or six inches of clean gravel or broken stone, then above with top soil. From two hundred and fifty to five hundred feet of this two-inch pipe will be required to take care of the drainage of a camp with one bathroom. If the soil the sew- age drains into is clean sand and gravel two hundred and fifty lineal feet of piping will be sufficient. If the ground upon which the sewage must be disposed is rocky or of a clay formation, filtration beds will be needed. Naturally they are not as good as where nature has prepared them ready for you. The same flush tank and settling basin are used as has been described for the subsurface irrigation system. The discharge from the flush tank instead of going into underground drain pipes goes on top of the filtration beds (Fig. 3), which are prepared as follows: A space of about twelve feet by twenty-five feet is cleared and leveled. Five lines of open-joint drain pipe are laid on its bottom, con- nected together and discharged at some con- venient point. Over these pipes are laid twelve inches of coarse gravel and broken stone; then a layer of twelve inches of coarse gravel and sand, eight inches of finer gravel and sand, and the whole finally finished with three or four inches of sand. A low curb of wooden plank- ing or stone should be built around the edges of the filter beds to protect the surface of sand and keep it from washing away. The whole filter bed should also be subdivided by an in- termediate curb, so that one part may be working while the other is resting. The sewage is discharged on the sur- face of these beds, the outlet of the
Text Appearing After Image:
->• £>«s* 'r/j",^r_ OV 7U.ET Fig. 3—Plans and Sections of Filtration Beds CT^'

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