Mechanical Contracting & Plumbing January-December 1912 . sewage in them can penetrate furtherinto the surrounding soil than the faecalmatter of the privy vault. The contaminating effects of cesspoolsand privies is illustrated in fig. 1, whichdoes not at all exaggerate the conditionsalmost always found in towns and vil-lages, where these methods have beenin use for any considerable length oftime. Fig. 2 shows a septic tank for sewagefrom a cottage where the water supplyis not abundant, and it would probably be sufficient to make provision for 10gal. per head per day. Assuming thatthe cottage w
Mechanical Contracting & Plumbing January-December 1912 . sewage in them can penetrate furtherinto the surrounding soil than the faecalmatter of the privy vault. The contaminating effects of cesspoolsand privies is illustrated in fig. 1, whichdoes not at all exaggerate the conditionsalmost always found in towns and vil-lages, where these methods have beenin use for any considerable length oftime. Fig. 2 shows a septic tank for sewagefrom a cottage where the water supplyis not abundant, and it would probably be sufficient to make provision for 10gal. per head per day. Assuming thatthe cottage will be occupied throughoutthe year by an average of four persons,the septic plant may be designed on thisplan. The tank is formed by utilizing a 24-in. dia. stoneware pipe and making aconcrete top and bottom to it. Thewhole is of such a nature that it couldbe constructed with such labor as wouldbe available in any village or construct the tank it is necessary todig a hole 3 ft. in diameter of the requi-site depth, and then lay in the bottom |P. PLUMBER AND STEAMFITTER 6 inches of cement concrete. The should then be pushed into theconcrete and the surface of the lattertamped or punned both inside andoutside the pipe so that the concretewill be solid and will adhere to the un-glazed portions of the pipe and give awatertight bottom. When the concreteis set in the ground may be filled inaround the pipe up to the level of theunder side of the concrete curb. lated building is shown in fig. 3, consist-ing of A, the septic tank proper withsubmerged inlet and outlet, and B, thesecond receptacle with filter bed ofbroken stone. This arrangement pro-vides for a continuous flow of the sewagethrough the tank and filter bed to theoutlet D, from which the purified efflu-ent flows into a creek, river, or lake, ac-cording to the position of the feature of this tank is the partition
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplumbin, bookyear1912
