Hold PHearing Amending Kittitas County Code Ch. 14.08_Flood Damage Prevention

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d. The velocity of floodwaters at the site should not exceed five (5) feet per second for any crawlspace. 6. Garages attached to a residential structure must have the floor elevated above the BFE or be constructed according to the tollowing conditions: a. The walls must have openings designed to automatically equalize hydrostatic and hydrodynamic flood forces by allowing for the entry and exit of floodwaters. (See the requirements listed above for the residential structure per 14.08.250]. b. All portions of the garage below the BFE must be constructed with materials resistant to flood damage. This includes any studs, walls, beams, posts, insulation, wall coverings, wall sheathing or other materials that extend below the BFE. c. Any utility systems within the garage must be elevated one foot or more above the Base Flood Elevation (BFE) with the exception of utility meters and equipment specifically designed to withstand inundation according to the standards of the International Residential Codes and the NFIP. 7 New construction, substantial improvement and reconstruction due to substantial damage of any residential structure in an AO zone shall meet the requirements in KCC 14.08.310 . 8. New construction and substantial improvement of any residential structure in an Unnumbered A zone for which a BFE is not available and cannot be reasonably obtained shall be reasonably safe from flooding, but in all cases the lowest floor shall be at least two feet above the Highest Adjacent Grade. (Ord. 2014-015, 2014; Ord. 2007-34, 2007; Ord. 2007-22, 2007; Ord. 2001-03; Ord. 93-18 § 5.2.1, 1993) 14.08.260 Detached accessory buildings (garages and small storage sheds). The following special provisions apply only to detached accessory structures used as garages or small storage sheds to single-family residences. 1. Detached accessory structures shall have the lowest floor elevated above the base flood elevation. When an accessory structure is not larger than a one-story and 800 square feetthe structure need not be elevated. However, the structure must have openings to allow floodwater in and out as required by KCC 14.08.250(2) and be constructed using flood resistant materials below the BFE. 2. For floodplain management purposes, accessory structures shall not be used for human habitation and must be limited to parking and storage. 3. Accessory structures shall comply with the foundation opening requirements in KCC 14.08.250(2). 4. Accessory structures shall be constructed and placed on the building site so as to offer the minimum resistance to the flow of floodwaters. 5. Accessory structures must be adequately anchored to prevent flotation, collapse, or lateral movement of the structure which may result in damage to other structures. 6. Accessory structures must comply with floodway encroachment provisions in KCC 14.08.300. 7. Service facilities such as electrical and heating equipment shall be elevated one foot or more above the base flood elevation. 8. If the structure is converted to another use, it must be brought into full compliance with the standards governing this ordinance. 9. Detached garages, storage structures, and other accessory structures not meeting the above standards must be constructed in accordance with all applicable standards in Section 14.08.250.