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water usage to operate the unit. Since there is an accumulation of condensation in flexible duct work, the ducts are likely to fail due to the increased weight caused by water accumulation. SECTION 39: That section 8-570 of the Santa Ana Municipal Code is hereby amended such that it reads as follows (new language in bold, deleted language in strikeout for tracking purposes only): Sec. 8-570. Ducts--Material (Section 601.1). Section 601.1 of the mechanical code is amended to read as follows: Sec. 601.1 Material Supply air, return air and outside air for heating, cooling or evaporative cooling systems shall be conducted through duct systems constructed of metal as set forth in Tables Nos. 6-A, 6-B and 6-C; metal ducts complying with U.M.C. Standard No. 6-1 with prior approval; or factory-made air ducts complying with U.L. Standard No.181. Ducts, plenums and fittings may be constructed of asbestos cement, concrete, clay or ceramics when installed in the ground or in a concrete slab, provided the joints are tightly sealed. EXCEPTION: Supply air duct, on the discharge side of an evaporative cooler, shall be conducted through rigid metal ducts constructed as set forth in Tables Nos. 6-A, 6-B and 6-C, and unless prohibited by structural conditions shall be graded in the direction of the supply outlet. Factory-made air ducts complying with U.L. Standard No. 181 shall be limited to installation in a vertical position only. Note: Vertical shall be defined as not more than forty-five (45) degrees from the vertical. SECTION 40: That section 8-667 of the Santa Ana Municipal Code is hereby amended such that it reads as follows (new language in bold, deleted language in strikeout for tracking purposes only): Sec. 8-667. Adoption by reference. There is adopted by the city that certain code known as the California Electrical Code2001 Edition and the administrative provisions set forth herein, except Article 80 of the Electric Code, (hereinafter referred to in this article as the "Electrical Code") together with subsequent supplements, amendments, or editions, which shall become effective, adopted, and incorporated by reference into the Santa Ana Municipal Code on the date specified by the State Building Standards Commission, unless specifically adopted prior to that date. The Electrical Code is adopted and incorporated by reference as though fully set forth at length herein as provided for in section 419 of the Charter of the city, except for the changes to the Electrical Code set forth in this Chapter of the Santa Aha Municipal Code that specifically amend the Electrical Code. Ordinance No. NS-2522 Page 19 of 47