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and the highest water supply outlet in the building or on the premises. <br />3. Use the "pressure range" group within which this pressure will fall using <br />Table 6-6. <br />4. Select the "length" column that is equal to or longer than the required <br />length. <br />5. Follow down the column to a fixture unit value equal to or greater than the <br />total number of fixture units required by the installation. <br />6. Having located the proper fixture unit value for the required length, sizes <br />of meter and building supply pipe as found in the two left-hand columns <br />shall be applied. <br />No building supply pipe shall be less than three-quarters (3/4) inch (20 <br />mm) in diameter. <br />Each single family residential structure shall be served with a main water supply <br />pipe of not less than one (1) inch I.D. <br />Two (2) hose bibbs served by three-quarter (3/4) I.D. pipe or larger shall be <br />provided; one serving the front yard and one serving the rear yard. <br />SECTION 30: The City Council of the City of Santa Ana hereby finds, determines <br />and declares that adoption of section 8-402 amending California Plumbing Code Table <br />6-6 is necessary because Santa Ana is located in a desert plain subject to seasonal hot, <br />dry winds. In order to assure an adequate water supply for common domestic water <br />demand, in addition to landscape irrigation needs, it is determined that an increase from <br />a 3/" diameter pipe supply to an 1"diameter supply and two 3/" diameter hose bibbs in <br />the front and back yards for irrigation is justified. <br />SECTION 31: That section 8-402 of the Santa Ana Municipal Code is hereby amended <br />such that it reads as follows: <br />Sec. 8-402. Building supply pipe (California Plumbing Code, Table 6-6) <br />Table 6-6 of the Plumbing Code is amended by changing the triple asterisk <br />footnote to read as follows: <br />*** Building Supply- three-quarter (3/4) inch (20 mm) nominal size minimum, - <br />1"minimum diameter for each single-family residential structure. <br />SECTION 32: The City Council of the City of Santa Ana hereby finds, determines <br />and declares that adoption of section 8-405 amending California Plumbing Code section <br />718.1 is necessary because of problems which have arisen in excessively flat-graded <br />drain systems. Santa Ana's sewer system in many areas is relatively shallow. This has <br />precluded the design and installation of drainage systems within the code <br />recommended grades. Additionally, many areas of Santa Ana have a high water table <br />Ordinance No. NS-XXXX <br />11 B-13 Page 13 of 37 <br />