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E. Optional occupancy group -municipality <br />may choose option I or option 2. <br />1. Group R-1 and R 2 occupancies with <br />8,500 or more gross square feet of floor area or <br />dwelling units or guestrooms on three or more <br />floors; and attached R-3 occupancies and <br />attached townhouses built to the International <br />Residential Code with 8,500 or more gross <br />square feet of floor area. All floors, basements, <br />and garages are included in this floor area <br />threshold. <br />2. Attached R-3 occupancies and attached <br />townhouses built to the International <br />Residential Code with more than 16 dwelling <br />units or more than time stories in height. <br />STAT AUTH: MS s 16B.59;16B.61;16B.64 <br />IIIST: 27 SR 1479 <br />1306.0040 STANDARD. <br />Automatic sprinkler systems must comply <br />with the applicable standard referenced in the <br />State Building Code. If a public water supply <br />is not available, the building official and fire <br />chief shall approve the use of an alternate <br />on -site source of water if the alternate source <br />provides protection that is comparable to that <br />provided by a public water supply. If an <br />adequate alternate water supply sufficient for <br />hose stream requirements is provided or <br />available, the building official and fire chief <br />may permit the water supply requirements for <br />the hose stream demands to be modified. <br />STAT AUTH: MS a 16B.59;'16B.61;16B.64 <br />FIST: 27 SR 1479 <br />1306.0050 SUBSTITUTE <br />CONSTRUCTION. <br />The installation of an automatic sprinkler <br />system, as required by this chapter, would still <br />allow the substitution of one -hour fire -resistive <br />construction as permitted by the International <br />Building Code, Table 601, footnote d. <br />STAT ALITH: MS s 16B.59; 16B.61;16B.64 <br />242 <br />I -EST: 27 SR 1479 <br />The building official, with the concurrence of <br />the fire official, may waive the requirements of <br />this chapter if the application of water has been <br />demonstrated to constitute a serious life, fire, or <br />environmental hazard, or if the building does <br />not have an adequate water supply and the <br />building is surrounded by public ways or yards <br />more than 60 feet wide on all sides. <br />STAT AUTH: MS s 16B.59; 16B.6 1; 16B.64 <br />MST: 27 SR 1479 <br />1306.0070 REPORTING. <br />A municipality must submit a copy of the <br />ordinance adopting this chapter to the <br />Department of Administration, Building Codes <br />and Standards Division, within 15 days of its <br />adoption. <br />REPEALER Minnesota Rules, part <br />1306.0100, is repealed. <br />STAT AUTH: MS s 16B.59;1613.61; 16B.64 <br />HIST: 27 SR 1479 <br />1306.0100 Repealed, 27 SR 1479 <br />