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2-05 Head LoSs CalculAtions: ' <br /> <br /> Head loss calculations and system analyses shall be made <br /> using the Hazen-Williams formula and the Hardy-Cross method. <br /> An electronic check may be requi~ed of complex systems. <br /> The value of the coefficlent "C" shall be 130 for transite or <br /> cement-lined pipes and 100 for existing unlined cast-iron, <br /> steel or other materials in the older system. <br /> <br />2-106 Minimum Pipe Sizes: <br /> <br />Sizing will generally depend on maintaining the requi:red <br />but the following minimums wi].i be 7'ecui. red in any event: <br /> <br />a) <br />b) <br /> <br />Minimum size of any line sba].l be <br />Generally an 8" minimum size wi],l be required under <br />the fo!iowiD, g conditions.: <br /> <br />Dead end longer than 500' <br />Straight runs longer than i00O' witheut rein~ <br />forcement. <br />Serving commercial~ industriai~ multiple reside~tiaj;. <br />and schools. <br /> <br />2-07 Location of Mains: <br /> <br />a) <br /> <br />Normally 7' off face of curb on the north anj] east siduf~ <br />of streets. Other locations may be allowed where an <br />economical advantage can be sho~m~ to avoid conflicts <br />for other sound reasons. <br /> <br />b) <br /> <br />On direct access divided roads or frontage re, ads paraj..iej <br />mains will be required on both sides of the street-. <br /> <br />All new water mains sha].l have a. minimum cover of <br />forty-two inches (42"). <br /> <br />2-09 Valves: <br /> <br />a) The '!','i'~ imt u nu'mb;}r :-~f va].ves s'hal] br:: as fo] .! ows :, <br /> <br />2-10 Hydrants: <br /> <br />a) <br /> <br />At cross intersections - 3 <br />At tee intersections ~- 2 <br />On straight runs so that there shall not be n~ore than <br />800' between valves. Except in high value areas <br />where maximum spacing is 500'~ <br />On all hydrant laterals, <br /> <br />T, es shall be as follows ~or the various zones; <br /> lP <br /> <br /> <br />