Public works . Fig. 1—TYPICAL MANOGRAPH CHART, SHOWING FLOWTHROUGH 30-INCH MAIN SUPPLYING A PURELY-RESIDENTIAL that night rate is about SOTo of mean daily rate. October 25, 1919 MUNICIPAL JOURNAL AND PUBLIC WORKS 251. Fig. 2—FLOW CHART, SHOWING RATE THROUGH 42-INCH MAIN. Note unusual peak during noon hour: also morningr peak and rapid decline after supper and after 11 oclock at night. A comparison of conditions immediately before andafter a detailed survey is particularly interesting and valu-able, and the dates of measurements may advantageouslybe selected to permit this. The ill
Public works . Fig. 1—TYPICAL MANOGRAPH CHART, SHOWING FLOWTHROUGH 30-INCH MAIN SUPPLYING A PURELY-RESIDENTIAL that night rate is about SOTo of mean daily rate. October 25, 1919 MUNICIPAL JOURNAL AND PUBLIC WORKS 251. Fig. 2—FLOW CHART, SHOWING RATE THROUGH 42-INCH MAIN. Note unusual peak during noon hour: also morningr peak and rapid decline after supper and after 11 oclock at night. A comparison of conditions immediately before andafter a detailed survey is particularly interesting and valu-able, and the dates of measurements may advantageouslybe selected to permit this. The illustration No. 3 showsan index card taken from the files of Washington, D. the top of this card is given the total and per capitaconsumption. The high percentage of night rate and ex-tremely high per capita consumption both show the neces-sity for waste investigation. The other figures on the cardshow the result of the detailed investigation. All flows de-tected on the night analysis are classified and recorded asshown on the lower part of the card. A second survey wasmade April 19th to 25th, 1912, about 19 months after the first,in which the following figures were obtained: Mean supply, gals.; minim
Size: 1589px × 1573px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
