File:Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918) (14799395263).jpg

Identifier: mechanicsofhouse00keen (find matches)
Title: Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances
Year: 1918 (1910s)
Authors: Keene, E. S. (Edward Spencer), b. 1864
Subjects: Heating Lighting Plumbing
Publisher: New York, McGraw-Hill book company, inc.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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ssed in the chapter on septic tanks. Fig. 58 shows a cross-section of the street, exposing the seweraS, the water main W, and the connections with the house. Theside of the house has been removed to permit a view of the waterand sewer pipes, connecting with the bathroom, kitchen, laundryand other basement fixtures. The lateral sewer or house drain, which connects the housewith the street sewer S, is provided with a trap G, located, in thiscase, just outside the basement wall. The house drain is madeof vitrified tile, laid so as to grade into the street sewer with thegreatest possible pitch. The sections are laid as true as condi-tions will permit and the joints are all carefully filled with cementmortar to prevent leakage. The object of the trap G is to preventsewer gas from entering the house from the main sewer. Thetrap prevents the gas from passing because the water in the bend 82 PLUMBING 83 of the trap forms a water seal, beyond which the polluted airfrom the sewer cannot travel.
Text Appearing After Image:
Next inside the trap is the vent pipe E, that extends to thesurface of the ground. In this case it is just outside the base- 84 MECHANICS OF THE HOUSEHOLD ment wall. The top is covered with a metal cap. Anotherarrangement often made to accomplish the same purpose isshown in Figs. 61 and 62, where a piece of soil pipe in the form ofa bend is made to take the place of the cap. Inside the basementand extending up through the partition walls to the roof is thewaste stack or soil pipe A, This pipe as is explained in detaillater, is made of cast iron and is put together with calked leadjoints. The top of the stack at the point where it passes throughthe roof is shown in Fig. 59. In extending through the roof thepipe A must make a water-tight joint to prevent water fromleaking through. This is accomplished by means of the metal plate D, which is set under theB ^ shingles and the piece C, that is soldered to Z>, The joint betweenC and A is best made with leadthe same as the other joints of

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