. Sanitary engineering : a guide to the construction of works of sewerage and house drainage, with tables for facilitating the calculations of the engineer. &°r?ih?^ driven by the water under the diaphragm forming thetrap. The difficulty in using traps of this description Difficulty ofin existing drains, arises from the fact that few house- ^existi^g1^drains have sufficient fall to enable a trap of this kind be inserted. Fig. 160 is a representation of Potts Patent Potts patentEdinburgh Air-chambered Sewer Trap, which isdescribed by its inventor as follows : A represents anair
. Sanitary engineering : a guide to the construction of works of sewerage and house drainage, with tables for facilitating the calculations of the engineer. &°r?ih?^ driven by the water under the diaphragm forming thetrap. The difficulty in using traps of this description Difficulty ofin existing drains, arises from the fact that few house- ^existi^g1^drains have sufficient fall to enable a trap of this kind be inserted. Fig. 160 is a representation of Potts Patent Potts patentEdinburgh Air-chambered Sewer Trap, which isdescribed by its inventor as follows : A represents anair chamber 2 feet 6 inches or 3 feet long; B is the soilpipe from the closet. The arrows show the courseof the soil through the trap. D is an ordinary watertrap or syphon, E E an open grating raised two or 2 L trap. 502 HOUSE DBAINAGE. three inches above the ground level, having a secondgrating or tray below it on which charcoal or otherdisinfectants may be placed. F is a ventilating pipe ; Fig. Position inwhich Pottstrap intendedto be used. Gr is a division plate or diaphragm, dividing the airchamber into two parts; L is a pipe joining the soilpipe by a junction before it enters the air chamber, andcan be used with advantage as a rain-water pipe, or toconvey waste or bath water; K is a side opening for anextra soil pipe. This apparatus is intended to be placedoutside and parallel with the external wall of thehouse. Whenever the depth of the drain will not permitthis trap to be placed on the surface, the sides of theair chamber should be carried up to the surface, andthe grid placed on the top. The inventor, however,says that in case the trap has to be fixed at a greatdepth below the surface, then circular or squarepipes will do carried up—one next the house to a littleabove the ground, and the other next the sewer a foothigher. These pipes should be 12 inches diameter,and fitted on the air chamber, and the rest of the spacecovered in, and the soil replaced; in this case
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondon, booksubject
