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resulting building area exceeds 5000 square feet. <br /> 2.2 When an addition exceeds 2000 square feet, and the resulting building <br /> area exceeds 5000 square feet. <br /> 2.3 An additional story is added above the second floor regardless of fire <br /> areas or allowable area. <br /> Exception: Additions to Group R-3 occupancies shall comply with Section <br /> 903.2.8. <br /> Section 903.3.5.3 Hydraulically calculated systems is hereby added as follows: <br /> 903.3.5.3 Hydraulically calculated systems. The desi n of hydraulically calculated <br /> sprinkler systems shall not exceed 90% of the water supplV ca acit . <br /> Exception: When static pressure exceeds 100 psi, and when required by the <br /> fire code official the sprinkler system shall not exceed the water suppl <br /> capacity specified by Table 903.3.5.3. <br /> TABLE 903.3.5.3 <br /> Hydraulically Calculated Systems <br /> Design <br /> 75 <br /> -85 <br /> 100 110 120 130 140 150 PSI <br /> Section 7. Section 8-290 of the Santa Ana Municipal Code is hereby amended to <br /> read as follows: <br /> Sec. 8-290. - Adoption by reference. <br /> There is adopted by the city that certain code known as the California Plumbing <br /> Code, 2025 Edition, including the following appendices thereto: A, B, D, I and <br /> J, (hereinafter referred to in this article as the "Plumbing Cade"), together with <br /> subsequent supplements or amendments, which shall become effective, <br /> adopted and incorporated by reference into this Code on the date specified by <br /> the state building standards commission, unless otherwise specified. The <br /> plumbing code is adopted and incorporated by reference as fully set forth at <br /> length herein as provided for in section 419 of the Charter of the city, except for <br /> the changes to the plumbing code set forth in this chapter of this Code that <br /> Ordinance No. NS-3088 <br /> Page 4 of 27 <br />