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314.7 All gas piping, horizontal cast iron drain, waste and vent piping, and all other suspended horizontal piping two and one-half (2 )1,) inches and larger, shall be supported with approved rod and hangars. Exception: plumbers tape (perforated strap iron) may be used to support piping two (2) inches and smaller in type V (wood) construction only. Plumbers tape shall be galvanized and not less than three-fourths (3/4) inch wide and twenty two (22) gage. SECTION 24: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-342 amending California Plumbing Code Table 3-2 is necessary to provide proper support for all horizontal piping, because of the significant potential for damage due to seismic activity. Cast iron is deemed unsafe in light of the seismic zone because of its weight and flexibility. Santa Ana is in close proximity to major active fault systems in Southern California. This area has been designated as the highest seismic risk zone in the hierarchy that rates the potential risk for seismic activity by geographical areas. As a result, a finding has been made that all suspended piping is to be braced to prevent movement or pipe failure. SECTION 25: That section 8-342 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-342. Suspended piping support (California Plumbing Code, Table 3-2). Table 3-2 of the plumbing code is amended by adding footnote 2 to the requirements for horizontal piping of all materials specified in Table 3-2 of the California Plumbing Code. SECTION 26: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-400 amending California Plumbing Code section 609.3.1 is necessary because of the caustic chemical composition of the soil in the City of Santa Ana, pipes subject to contact with the soil are susceptible to corrosion potentially causing damage or failure. In addition, nonmetallic piping, and particularly plastic or other materials may leach caustic chemicals into the water supply. Moreover, since Santa Ana is located in the highest seismic design categories, plastic and other nonmetallic types of piping are susceptible to fracture, joint weakening and potential failure during seismic activity. In addition, throughout the City of Santa Ana varied soil conditions exist, resulting in acidic soil conditions. It is determined that these additional safeguards against corrosion of the piping materials are necessary to maintain a properly functioning plumbing system. SECTION 27: That section 8-400 of the Santa Ana Municipal Code is hereby amended such that it reads as follows: Sec. 8-400. Water piping in buildings (California Plumbing Code Section 609.3.1). Section 609.3.1 of the Uniform Plumbing Code is amended to read as follows: Ordinance No. NS-2760 Page 11 of 36