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314.3. Piping in the ground shall be laid on a firm bed for its entire length. Building drains, sewers and storm drain piping systems in the ground, and designed and approved at less than one (1) percent grade, shall be laid on a continuous firm bed, certified by a registered soils engineer as having a compaction level of not less than ninety (90) percent density. Where support is otherwise provided, it shall be acceptable to the ~"^'~;,;~c+,~~,~-Authority Having Jurisdiction. SECTION 22: The City Council of the City of Santa Ana hereby finds, determines and declares that adoption of section 8-341 amending California Plumbing Code section 314.7 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 23: That section 8-341 of the Santa Ana Municipal Code is hereby amended such that it reads as follows (new language underlined, deleted language in strikeout for tracking purposes only): Sec. 8-341. Horizontal piping (California Plumbing Code Section 314.7). Section 314.7 of the Plumbing Code is amended to read as follows: 314.7 All gas piping, horizontal cast iron drain, waste and vent piping, and all other suspended horizontal piping two and one-half (2 %2) 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. Ordinance No. NS-XXXX 75C-24 Page 16 of 48