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CAPACITY OF STORAGE FACILITIES FOR EQUALIZATION FLAW <br />The design of water supply facilities is normally based on the provi- <br />sion of treatment units of sufficient size to produce at least one maxim= <br />day's demand. As previously mentioned, tests have indicated that the maxi- <br />m= hour demand is 150 per cent of the maximum day demand. <br />Equalizing, or operating, storage must be provided to supply this addi- <br />tional flaw. Where accurate continuous flow records are available, a mass <br />diagram can be prepared to show hourly fluctuations and the need for equal- <br />izing storage. Unfortunately, the records of tank fluctuations have not <br />been recorded in Loveland. However, the charts from a recording pressure <br />guage in the City Engineer's office give a good indication of the storage <br />operation. <br />From our past experience and from other authorities, it has been deter- <br />mined that a steady supply at the rate of maximum da-.-,ly use will require an <br />equalizing storage of 15 per cent of the maximum day's consumption, This <br />figure applies to a western community in which irrigation is restricted to <br />morning and evening hours. Since Loveland allows watering throughout the <br />day we believe that this factor should be raised to 20 per cent. <br />A change in the irrigation ordinance which would allow a four to six <br />hour period in the middle of the day, during which the storage tanks could <br />replenish their supply, would definitely delay the need for additional <br />storage capacity. <br />CAPACITY OF STORAGE FACILITIES FOR FIRE DEMAND <br />In addition to the storage requirements for normal operation on a maxi- <br />mum day, it is necessary to provide storage for fire protection. The exist - <br />ence of such storage has a very definite and favorable reflection in <br />- 17 - <br />