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20.08.030 3. The spark arrestor required by this section shall be substantially con- structed and have a screen area of the chimney it serves. Openings shall not permit the passage of spheres having a diameter of larger than one- half (1/2) inch nor block the passage of spheres having a diameter of less than three-eighths (3/8) inch. Spark arresters shall be adequately support- ed and secured. (Ord. 1869 § 2, 2002; Ord. 1778 § 2, 1998; Ord. 1669 § 2, 1995) 20.08.032 UBC Section 904.3.1, Amended -Where Required: Section 904.3.1 of the California Building Standards Code 2001 Edition, (24 CCR), and including by reference the Uniform Building Code is amended to read as follows: Section 1003.3.1 Where required. All valves controlling the water supply for automatic sprinkler systems and water-flow switches on all sprinkler systems shall be electrically moni- tored as follows: 1. All fire protection and fire alarm systems shall be supervised to an Underwriters Laboratory (UL) Cen- tral Station Service. Valve monitor- ing, water-flow alarm(s), FM 200 system(s), and trouble signal(s) etc. shall be distinctly different and shall be automatically transmitted to an approved Underwriters Laboratory (UL) Central Station Service as spec- ified in NFPA 72-1999 Edition. 2. All Fire alarm system(s) alarm initiation and signaling shall comply with the provisions in Pleasanton Municipal Code Section 20.24.150. Valve monitoring and water-flow alarm and trouble signals shall be distinctly different and shall be auto- matically transmitted to an approved Underwriters Laboratory Central Sta- tion Service, as defined by national standards, or, when approved by the building official with the concur- rence of the chief of the fire depart- ment, sound an audible signal at a constantly attended location. (Ord. 1869 § 2, 2002; Ord. 1806 § 2, 2000) 20.08.034 UBC Section 2320.11.3, Amended -Bracing: Section 2320.11.3 of the California Building Standards Code 2001 Edition, (24 CCR), and including by reference the Uniform Building Code is amended to read as follows: 1. Braced wall lines shall consist of braced wall panels, which meet the requirements for location, type and amount of bracing specified in Table 23-1V-C-1 and are in line or offset from each other by not more than 4 feet (1219 mm). 2. Braced wall panels shall start at not more than 8 feet (2438 mm) from each end of a braced wall line. 3. All braced wall panels shall be clearly indicated on the plans. 4. Construction of braced wall panels shall be by one of the following (Pleasanton April 2003) 70_4,