224 



The Country House 



This is an important feature and should be borne in mind. Traps are usually of 

 the following sizes: For water closets, about 4 inches; for slop sink, kitchen 



sink and washtubs, 2 inches; for other 

 fixtures, i^ inches. 



Having considered the trap, let us 

 look at the more complex system as 

 necessitated by some local laws (see 

 Fig. 42). The main soil pipe (A) is of 

 iron, 4 inches in diameter, and extends 

 from the house drain below the cellar 

 level straight upward through the roof. 

 The main waste pipe (B) is erected in 

 the same manner and serves the same 

 office for the liquid wastes. It varies 

 in size from 2 to 3 inches, according ro 

 the number of branch connections, and 

 may be omitted in favour of the main 

 soil pipe in a more condensed system. 

 The main vent pipes (C) run parallel to 

 the two foregoing as closely as possible 

 and join them above and below the 

 fixtures connections at X and Y. Con- 

 nected to these two mains are the 

 branch waste pipes (D) and the branch 

 vent pipes (E), the former of which is 

 attached lower and the latter higher 

 than the fixtures from which they K;ul. 

 The branch waste should have at least 

 a pitch of } inch to the foot in its flat run. Where the closet is removed to a short 

 distance from the main soil pipe, it is connected to the Y by a short length termed 

 the branch soil pipe (W), which should have the same pitch as the branch wastes. 

 Where it is possible, the branch wastes and vents, as well as house traps (J) 

 and the intersection of the mains with house drain, should have clean-outs with 

 screw caps conveniently located. 



It will be noted that traps are attached to all fixtures except the closet 

 (which is its own trap), and each trap taps both the soil or waste and the main vent. 

 It is not absolutely necessary to back-vent the closet, although this is done to 

 cover the law. 



The house drain (L) has the usual pitch of branch waste pipes, and con- 

 nects with the mains through Y joints inclined toward the pitch of the pipe. 

 The trap (J), located just inside the wall of the house through which the house 

 drain passes to connect with the sewer, prevents the entry of gas into the house 

 system from the outside. Back of this trap is attached the fresh-air inlet (I), 

 which, from its frequent tendency to serve as a vent, should be located well away 

 from the house. On the opposite side of the house the cellar window area is 

 drained by P, and the leaders from the roof with this pass through the house 



A shower bath with porcelain basin and marble back in contin- 

 uation of the wainscottinj 



