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(b) Automatic sprinkler systems shall be installed and maintained in operable <br />condition as specified in this Article and NFPA Standard 13, in all buildings or <br />structures: <br />Of all occupancy classifications except R3 (single-family and duplex) of <br />type IIN, III - 1 hour, IIIN, IV, V - 1 hour or VN construction, the total <br />floor area of which exceeds 7,500 square feet, irrespective of area <br />separation walls. <br />2. Of all occupancy classifications, except R3 (single-family and duplex) of <br />type I or II -fire resistive construction, the total floor area of which <br />exceeds 10,000 square feet, irrespective of area separation walls. <br />Of all occupancy classifications, irrespective of construction type, the <br />overall height of which exceeds 45 feet. Building height shall be <br />determined in accordance with Section 209 of the Building Code. <br />(c) The provisions of this section shall apply to existing buildings or structures when, <br />over any three year period,: <br />1) Permits for additions and alterations increase the floor area by 25 percent. <br />2) Permit valuation for additions, alterations, repairs or other modifications, <br />individually or cumulatively, exceeds 25 percent of building valuation <br />determined by the building official. <br />(d) Automatic sprinkler systems installed within buildings shall have all control <br />valves and flow devices electrically supervised and maintained by an approved <br />Central Alarm Station, as defined in Section 1006.3.3.6.1. Buildings in existence <br />upon the effective date of this subsection shall be made to conform to the <br />provisions herein within one year from said effective date. <br />Section 3-3-265: RESERVED. <br />Section 3-3-270: RESERVED. <br />Section 3-3-275: RESERVED. <br />Section 3-3-280: RESERVED. <br />Section 3-3-285: RESERVED. <br />