1999-05-26 - Laserfiche WebLink

Home Browse Search

9 a+v 1/4.rK l,n. 1 uu - i - ro tuwuiV the official designated by the commu- nity's FIRM (at least two feet if no nity under 459.22(a)(9)(lii); depth number is specified); (5) Require, for all new construction (8) Require within any AO zone on and substantial improvements. that the community's FIRM that all new fully enclosed areas below the lowest construction and substantial improve - floor that are usable solely for parking meats of nonresidential structures (i) of vehicles. building access or storage have the lowest floor (including base - in an area other than a basement and ment) elevated above the highest adja- which are subject to flooding shall be cent grade at (east as high as the depth designed to automatically equalize hy- number specified in feet on the commn- drostatic flood forces on exterior walls nity's FIRM (at least two feet if no by allowing for the entry and exit of depth number is specified). or (ii) to- floodwaters. Designs for meeting this gether with attendant utility and sani- requirement must either be certified Lary facilities be completely by a registered professional engineer or floodproofed to that level to meet the architect or meet or exceed the follow - floodproofing standard specified in tag minimum criteria: A minimum of 460.3(cX3xii); two openings having a total net area of (9) Require within any A99 zones on a not leas than one square inch for every community* -FIRM the standards of square foot of enclosed area subject to paragraphs (a)(1) through (aX4)(1) and flooding shall be provided. The bottom (b)(5) through (bX9) of this section; of all openings shall be no higher than (10) Require until a regulatory one foot above grade. Openings may be floodway is designated, that no new equipped with screens, louvers. valves. construction. substantial improve - or other coverings or devices provided meats, or other development (including that they permit the automatic entry fill) shall be permitted within Zones and exit of floodwaters. A1-30 and AE on the community's (6)'Require that manufactured homes FIRM, unless it is demonstrated that that are placed or substantially im- the cumulative effect of the proposed proved within Zones A1-30, Alt and AE development, when combined with all on the community's FIRM on sites other existing and anticipated develop- (i) Outside of a manufactured home meat, will not increase the water sur- park or subdivision, face elevation of the base flood more (ii) In a new manufactured home than one foot at any point within the park or subdivision, community. (iii) In an expansion to an existing (11) Require within Zones AH and AO, manufactured home park or subdivi- adequate drainage paths around struc- sion, or tures on slopes, to guide floodwaters (iv) In an existing manufactured around and away from proposed struc- home park or subdivision on which a tures. manufactured home has incurred "sub- (12) Require that manufactured - stantial damage" as the result of a homes to be placed or substantially im- flood, be elevated on a permanent foun- proved on sites in an existing manufac- , dation such that the lowest floor of the tured home park or subdivision within manufactured home is elevated to or Zones A -1 -30, AH. and AE on the com- above the base flood elevation and be munity's FIRM that are not subject to securely anchored to an adequately an- the provisions of paragraph (c)(6) of chored foundation system to resist this section be elevated so that either floatation collapse and lateral move- (i) The lowest floor of the manufac- ment. tured home is at or above the base (7) Require within any AO zone on flood elevation, or the community's FIRM that all new (ii) The manufactured home chassis construction and substantial improve- is supported by reinforced piers or ments of residential structures have other foundation elements of at least the lowest floor (including basement) equivalent strength that are no less elevated above the highest adjacent than 36 inches in height above grade grade at least as high as the depth and be securely anchored to an ade- number specified in feet on the commu- quately anchored foundation system to 238