Mechanical Contracting & Plumbing January-December 1909 . Fig. 1. Fig. 2. 2-inch vent. If traps are more thanfive feet and not more than tenfeet from the stack or vent pipe,an improved resealing or anti-siphontrap may be used. For four to sixfloors the main vent should be increasedto 2£ inches at the fourth floor seven to ten floors the main ventshould be increased to three inches atthe sixth floor branch, and the soilvent increased to five inches. Thebranches must discharge above the cen-ter line of the closet discharge pipe. The designs were prepared by H. , plumbing inspect
Mechanical Contracting & Plumbing January-December 1909 . Fig. 1. Fig. 2. 2-inch vent. If traps are more thanfive feet and not more than tenfeet from the stack or vent pipe,an improved resealing or anti-siphontrap may be used. For four to sixfloors the main vent should be increasedto 2£ inches at the fourth floor seven to ten floors the main ventshould be increased to three inches atthe sixth floor branch, and the soilvent increased to five inches. Thebranches must discharge above the cen-ter line of the closet discharge pipe. The designs were prepared by H. , plumbing inspector, readers who can suggest improve-ments or criticise the lay-outs are in-vited to send their opinions to thePlumber and Steamfitter. CHLORINE GAS TO PURIFYSEWAGE. Col. Sam Hughes, , Lindsay, hassupplied Toronto civic officials withpamplets entitled, A System of Sew-erage Purification. Here are a few ofthe good points Col. Hughes cites mfavor of his scheme : The area required for the entire plantis small. The whole system would takeu
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