Engineering and Contracting . 8 10 IZ HouTsofjthe Day 1111Main StSewer. Hours of the Day Fig. 2. Hourly Variation in Rate of Sewage Flow In Highly Devel-oped Commercial Districts of Cincinnati. populated areas, as parks, cemeteries and rail-road yards, by deducting these areas from thearea of the district. The areas of the sewer districts vary great-ly, the small districts for the most part beingthose which are directly tributary to the OhioRiver and in the older portion of the area of the smallest district is acres,while that of the largest well-sewered distri
Engineering and Contracting . 8 10 IZ HouTsofjthe Day 1111Main StSewer. Hours of the Day Fig. 2. Hourly Variation in Rate of Sewage Flow In Highly Devel-oped Commercial Districts of Cincinnati. populated areas, as parks, cemeteries and rail-road yards, by deducting these areas from thearea of the district. The areas of the sewer districts vary great-ly, the small districts for the most part beingthose which are directly tributary to the OhioRiver and in the older portion of the area of the smallest district is acres,while that of the largest well-sewered districtis 4, acres. The present density of popu-lation varies from person per acre to 104persons per acre. The estimated future densityof population varies from person per acreto 110 persons per acre. This is considered tobe a liberal basis for the design of the inter-cepting sewers, as the deficiencies of somedistricts will offset the excesses of others; butwhere individual sewer systems are to be de- ber in the Ohio River District, and that the esti-mated future popu
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