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rr <br />WATER RATE STUDY I City of Santa Ana, CA <br />Number of Breaks per Mile of Pipe by Diameter and Material <br />Break frequency was also reviewed against pipe diameter and material. Table B - 7 and Figure B - 18 <br />present the results. Although 4 inch pipe represents less than 1 percent of the system, it exhibited the <br />highest break per mile frequency. In general the larger the pipe, the less break frequency was observed. <br />This is as expected as the standards for these pipes are different than for larger pipes and these tend to <br />be sallower and in high traffic areas. Other than this, there appears to be no significant trends based on <br />pipe size and material. <br />Table B - 7: Number of Breaks per Mile of Pipe by Diameter and Material <br />Diameter <br />AC <br />Cl <br />CM LC <br />CYL <br />DI <br />PVC <br />STL <br />UNK <br />Total '.. <br />4 <br />1.83 <br />3.19 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />2.60 <br />6 <br />0.39 <br />1.35 <br />0.00 <br />0.00 <br />0.00 <br />0.40 <br />0.00 <br />0.00 <br />0.91 <br />8 <br />0.28 <br />1.21 <br />0.00 <br />0.00 <br />1.53 <br />0.17 <br />0.00 <br />0.00 <br />0.56 <br />10 <br />0.13 <br />1.28 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.38 <br />12 <br />0.19 <br />0.32 <br />0.00 <br />0.00 <br />0.60 <br />0.22 <br />0.00 <br />0.00 <br />0.28 <br />14 <br />0.00 <br />0.46 <br />0.00 <br />0.59 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.19 <br />16 <br />0.30 <br />0.00 <br />1.01 <br />0.10 <br />1.36 <br />0.00 <br />0.00 <br />0.00 <br />0.40 <br />18 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.49 <br />0.00 <br />0.00 <br />0.00 <br />0.13 <br />20 <br />0.00 <br />0.00 <br />0.00 <br />0.42 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.18 <br />24 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />30 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />36 <br />0.00 <br />0.00 <br />0.52 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.42 <br />ITgt�i <br />0.30 <br />1.01 <br />0.41 <br />0.12 <br />0.62 <br />0.20 <br />0.00 <br />0.00 <br />0.57 <br />Figure B - 18: Number of Breaks per Mile of Pipe by Diameter and Material <br />65B -112 <br />NOVEMBER 2014 <br />