Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 274
uniformity coefficient was 1.1. The sand was 2.3 feet deep, and rested directly on the brass strainer floor, which contained 292,900 holes, each being 0.024 inches in diameter. Regulating Weir. After passing through the sand the water was collected in the radial troughs, and passed from a central… … Fig. 11. Warren Filter, Agitating Device. was to maintain the same head upon the orifice. In fact, however, the quantities filtered were somewhat less before washing than immediately after. The extent of the variation for some repre- sentative periods is given in Table No. 5. This controlling weir…
Engineering
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