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1301.05 1301.05 Subd. 4. Standards for Flood Fringe Conditional Uses: a. An owner may use alternative elevation methods other than the use of fill to elevate a structure's lowest floor above the regulatory flood protection elevation. These alternative methods may include the use of stilts, pilings, parallel walls, etc., or above - grade, enclosed areas such as crawl spaces or tuck under garages. The City shall consider the base or floor of an enclosed area above -grade and not a structure's basement or lowest floor if. 1) the enclosed area is above -grade on at least one (1) side of the structure; 2) it is designed and constructed to internally flood and is constructed with flood resistant materials; and 3) the owner uses it solely for parking of vehicles, building access or storage. The above -noted alternative elevation methods are subject to the following additional standards: (1) Design and Certification: A licensed professional engineer or architect must certify that the structure's design and as -built condition meets the general design standards of the Minnesota State Building Code. Specifically, all electrical, heating, ventilation, plumbing and air conditioning equipment and other service facilities must be at or above the regulatory flood protection elevation or be designed and constructed to prevent flood water from entering or accumulating in these components during times of flooding. (2) Specific Standards for Above -grade, Enclosed Areas: Owners and contractors shall design and construct above -grade, fully enclosed areas such as crawl spaces or tuck under garages to internally flood with design and construction plans that stipulate: (a) A minimum area of automatic openings in the walls where internal flooding is to be used as a flood proofing technique. There shall be a minimum of two (2) openings on at least two sides of the structure and the bottom of all openings shall be no higher than one (1) foot above grade. The automatic openings shall have a minimum net area of not less than one (1) square inch for every square foot of enclosed area subject to flooding unless a licensed professional engineer or architect certifies that a smaller net area would suffice. The owner or contractor may equip the automatic openings with screens, louvers, valves, or other coverings or devices if such devices permit the automatic entry and exit of flood waters without any form of human intervention; and (b) That the enclosed area will be designed and constructed of flood resistant materials in accordance with the standards of the FP-3 or FP-4 classifications in the Minnesota State Building Code and that the owner or occupants shall only use such areas for building access, vehicle parking or storage. City of Mounds View