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86-9133 Zoning Regulations(Published in The Salina Journal May 1, 1986) ORDINANCE NUMBER 86-9133 AN ORDINANCE CONDITIONALLY PERMITTING CONSTRUCTION OF RESIDENTIAL BASEMENTS BELOW THE BASE FLOOD ELEVATION (BFE) WITHIN THE DESIGNATED FLOOD PLAIN; AMENDING SECTION 42-442 OF THE SALINA CODE AND REPEALING THE EXISTING SECTION. BE IT ORDAINED by the Governing Body of the City of Salina, Kansas: Section 1. That Section 42-442 of the Salina Code is hereby amended to read as follows: "Sec. 42-442. Standards for the floodway fringe overlay district. (a) New construction or substantial improvements of residential structures shall be required to have the lowest floor, including basement, elevated to or above the base flood elevation or floodproofed to at lease one foot above the base flood elevation. Any basement area, together with attendant utilities and sanitary facilities, below that level shall be designed and constructed so that the structure is watertight with walls that are impermeable to the passage of water without human intervention. Basement walls shall be built with the capability to resist hydrostatic and hydrodynamic loads and the effects of buoyancy resulting from the 100 -year frequency flood and shall be designed so minimal structural damage will occur if this design is exceeded. The floodproofed design elevation is the 100 -year base flood elevation plus one (1) foot. (1) The bottom of the lowest basement openings, such as doors and windows, must be placed at lease one (1) foot above the 100 -year base flood elevation; (2) The basement floor must not be lower than five (5 ) feet below the floodproofed design elevation. (3) The land around the entire foundation must be filled at least to the 100 -year base flood elevation; and (4) Floodproofed basements may not be constructed within the floodway. (5) Basements constructed in accordance with this regulation shall not be used for sleeping purposes. (6) A registered professional engineer or architect shall certify that the floodproofing measures used in the structure satisfy the standards of this subsection. This certification shall include the specific elevation (in relation to mean sea level) to which the structure is floodproofed. (7) The Zoning Administrator shall certify that the structure has been built in accordance with this design. (b) New construction or substantial improvements of nonresidential structures shall be required to have the lowest floor, including basement, elevated to or above the base flood elevation or, together with attendant utility and sanitary facilities, to be floodproofed so that below one foot above the base flood level the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and the effects of buoyancy. A registered professional engineer or architect shall certify that the standards of this subsection are satisfied. Such certification shall be provided to the Zoning Administrator as set forth in Section 42-435(b)(7); (c) Within AH zones adequate drainage paths around structures on slopes shall be required in order to guide floodwaters around and away from proposed structures. (d) All mobile homes shall be anchored to resist flotation, collapse, or lateral movement by providing over -the -top and frame ties to ground anchors. Specific requirements shall be that: (1) over -the -top ties be provided at each of the four corners of the mobile home, with two additional ties per side at intermediate locations and mobile homes less than fifty (50) feet long requiring one additional tie per side; (2) frame ties be provided at each corner of the home with five additional ties per side at intermediate points and mobile homes less than fifty (50) feet long requiring four additional ties per side; (3) all components of the anchoring system be capable of carrying a force of 4,800 pounds; and (4) any additions to the mobile home be similarly anchored. (e) For mobile home parks and subdivisions; for expansion to existing mobile home parks and subdivisions; for existing mobile home parks and subdivisions where the repair, reconstruction or improvement of the streets, utilities and pads equals or exceeds fifty (50) percent of value of the streets, utilities and pads before the repair, reconstruction or improvement has commenced; and for mobile homes not placed in a mobile home park or subdivision require: (1) stands or lots are elevated on compacted fill or on pilings so that the lowest floor of the mobile home will be at or above the base flood level; (2) adequate surface drainage and access for a hauler are provided; and (3) in the instance of elevation on pilings: a. lots are large enough to permit steps, b. piling foundations are placed in stable soil no more than ten (10) feet apart, and C. reinforcement is provided for pilings more than six (6) feet above the ground level. (f) No mobile home shall be placed in a floodway except in an existing mobile home park or existing mobile home subdivision. U Section 2. That the existing Section 42-442 of the Salina Code is hereby repealed. [SEAL] ATTEST: r � D. L. Harrison, City Clerk Introduced: April 28 , 1986 Passed: May 5, 1986 /Joseph M. Ritter, Mayor