05/10/1995 P&Z Packet - Laserfiche WebLink

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Flood Protection Elevation shall not be permitted unless granted a variance by the Board of Adjustment. In granting a variance, the Board shall specify limitations on the period of use or occupancy of the residence. B. Non -Residential Use. 1. Commercial, manufacturing, and industrial structures shall ordinarily be elevated on fill so that their lowest floor (including basement) is at or above the Regulatory Flood Protection Elevation, but may where floodplain fill may result in an increase in the regional flood elevation, change in the natural course of the floodplain drainage or result in potential flooding of neighboring properties be flood proofed in accordance with the State Building Code. Structures that are not elevated to above the Regulatory Flood Protection Elevation shall be flood proofed to FP -1 or FP -2 classification as defined by the State Building Code. Structures flood proofed to FP -3 or FP -4 classification shall not be permitted. 2. Commercial, Manufacturing and Industrial. Accessory land uses, such as yards, railroad tracks, and parking lots may be at lower elevations. However, a permit for such accessory facilities to be used by the general public shall not be granted, in the absence of a flood warning system, if the area is inundated to a depth greater than two (2) feet or subject to flood velocities greater than four (4) feet per second upon the occurrence of the regional flood. Subdivision 3. Accessory Uses. Accessory structures shall be elevated on fill or structurally dry flood proofed in accordance with the FP- I or FP -2 flood proofing classifications in the State Building Code. As an alternative, an accessory structure may be flood proofed to the FP -3 or FP -4 flood proofing classification in the State Building Code provided the accessory structure constitutes a minimal investment, does not exceed 500 square feet in the size, and for a detached garage, the detached garage must be used solely for parking of vehicles and limited storage. All flood proofed accessory structures must meet the following additional standards, as appropriate: A. The structure must be adequately anchored to prevent flotation, collapse or lateral movement of the structure and shall be designed to equalize hydrostatic flood forces on exterior walls; and B. Any mechanical and utility equipment in a structure must be elevated to or above the Regulatory Flood Protection Elevation or properly flood proofed. Page 17