11197-25 Amending Chapter 6, Article 9, of the South Bend Municipal Code to Update the Regulations for Flood Damage Prevention

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structure and attendant utility facilities are watertight and capable of resisting the effects of the regulatory flood. The structure design shall take into account flood velocities, duration, rate of rise, hydrostatic pressures, and impacts from debris or ice. Such certification shall be provided to the Floodplain Administrator. 2. Floodproofing measures shall be operable without human intervention and without an outside source of electricity. (vi)A nonresidential structure may be constructed using a stem wall foundation (also called chain wall, raised-slab-on-grade, and slab-on- stem-wall-with-fill). Any backfilled stem wall foundation must be backfilled with compacted structural fill, concrete, or gravel that supports the floor slab. No flood openings are required for this type of construction. (d) Manufactured Homes and Recreational Vehicles. (i) These requirements apply to all manufactured homes to be placed on a site in the SFHA: 1. The manufactured home shall be elevated on a permanent foundation such that the lowest floor shall be at or above the FPG and securely anchored to an adequately anchored foundation system to resist flotation, collapse, and lateral movement. 2. Fully enclosed areas formed by foundation and other exterior walls below the FPG shall be designed to preclude finished living space and designed to allow for the entry and exit of floodwaters to automatically equalize hydrostatic flood forces on exterior walls as required for elevated structures in Section 6-38.5(3)(b)(iii). 3. Flexible skirting and rigid skirting not attached to the frame or foundation of a manufactured home are not required to have openings. (ii) Recreational vehicles placed on a site in the SFHA shall either: 1. Be on site for less than 180 days and be fully licensed and ready for use on a public highway(defined as being on its wheels or jacking system,is attached to the site only by quick disconnect type utilities and security devices, and has no permanently attached additions), or 2. Meet the requirements for "manufactured homes" as stated earlier in this section. (e) Accessory Structures Within SFHAs,new construction or placement of an accessory structure must meet the following standards: (i) Shall have a floor area of 400 square feet or less. (ii) Use shall be limited to parking of vehicles and limited storage. (iii)Shall not be used for human habitation. (iv)Shall be constructed of flood resistant materials. (v) Shall be constructed and placed on the lot to offer the minimum resistance to the flow of floodwaters. (vi)Shall be firmly anchored to prevent flotation. (vii) Service facilities such as electrical and heating equipment shall be elevated or floodproofed to or above the FPG. (viii) Shall be designed to allow for the entry and exit of floodwaters to automatically equalize hydrostatic flood forces on exterior walls as required for elevated structures in Section 6-38.5(3)(c)(iii). (ix) Shall not have subsequent additions or improvements that would preclude the structure from its continued designation as an accessory structure. (f) Free-standing Pavilions, Gazebos, Decks, Carports, and Similar Development. Within SFHAs,new construction or placement of free-standing pavilions,gazebos, decks,carports, and similar development must meet the following standards: (i) Shall have open sides(having not more than one rigid wall). (ii) Shall be anchored to prevent flotation or lateral movement. (iii)Shall be constructed of flood resistant materials below the FPG. (iv)Any electrical, heating, plumbing and other service facilities shall be located at/above the FPG. 24