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SECTION 38: The City Council of the City of Santa Ana hereby finds, determines <br />and declares that adoption of section 8-570 amending California Mechanical Code <br />Section 602.1 is necessary because of corrosion related to the high seasonal humidity <br />in this coastal area which prevents moisture collecting in flexible ducting of evaporative <br />cooling systems from draining and evaporating, contributing to the deterioration of the <br />ductwork thereby endangering person's health and the environment. <br />SECTION 39: That section 8-570 of the Santa Ana Municipal Code is hereby amended <br />such that it reads as follows (new language underlined, deleted language in strikeout for tracking <br />purposes only): <br />Sec. 8-570. Ducts--Material (Section 602.1). <br />Section 602.1 of the mechanical code is amended to read as follows: <br />?[3r Fi ?L2 7 ILOa t°r+?? CH <br />^I <br />air <br />return <br />i d <br />t <br />id <br />: r h? <br /> pp <br />7 <br />, <br />a <br />r a n <br />ed <br />s <br />e-a- <br />? r? <br />c?c <br />+.?+ ?.+ + ?J f +..1 .? + f r+h T hl AI R A L.` 'J R Z L` it <br />o <br />??ou ?i-°? f?°+° <br />r°°r'° r ^', ^+° ^m <br />l <br />in ith l? 6 St <br />d d Ab <br />181 <br />n?l?t? ? <br />p <br />? <br />g <br />r?ipr+..^,° ^-+ fittin <br />s ma <br />woe-seers-t? dv <br />an <br />a <br />st <br />ed <br />e? <br />b <br />t r <br />e <br /> <br />?^^^rPt g <br />, <br />c ??? <br />??? ?a 'miss when installed i <br />t ? <br />- <br />-as <br />es <br />? <br />h <br />-' es--ser?er? <br />+ <br /> ; <br />n <br />;" e <br />602.1 General. Supply air, return air, and outside air for heating. coolin <br />or evaporative cooling systems shall be conducted through duct systems <br />constructed of metal as set forth in the ANSI/SMACNA 006-2006 HVAC <br />Duct Construction Standards - Metal and Flexible or another approved <br />duct construction standard. Rectangular ducts in excess of two l2) inches <br />w.g. shall comply with the ANSI/SMACNA 006-2006 HVAC Duct <br />Construction Standards - Metal and Flexible or another approved duct <br />construction standard. Ducts, plenums, and fittings may be constructed of <br />concrete. clay, or ceramics when installed in the ground or in a concrete <br />slab, provided the joints are tightly sealed. <br />In other than Group A. E, H, I, L, and R occupancies. high-rise buildings <br />and other applications listed in Section 1.11.0 regulated by the Office of <br />the State Fire Marshal, corridors shall not be used to convey air to or from <br />rooms if the corridor is required be of fire-resistive construction per the <br />Building Code. In Group A E H I L and R occupancies high-rise <br />buildings, and other applications listed in Section 1.11.0 regulated by the <br />Office of the State Fire Marshal, corridors shall not be used to convey air <br />to or from rooms except where permitted in accordance with Section <br />1018.5 of the California Building Code. <br />Ordinance No. NS-XXXX <br />7e A _?f0 Page 20 of 50