COM 0334.000 2016-2018 - Laserfiche WebLink

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reaerai tmergency management Agency, U-15 S' 1 . (2)Select and adopt a regulatory floodway based on the principle that the area chosen for the regulatory floodway must be designed to carry the waters of the base flood, without increasing the water surface elevation of that flood more than one foot at any point; O (3).Prohibit encroachments, including fill, new construction, substantial improvements, and other development within the adopted regulatory floodway unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering.practice that the proposed encroachment would not result in any increase in flood levels within the community during the occurrence of the base flood discharge; . (4)Notwithstanding any other provisions of§60.3,a community may permit encroachments within the adopted regulatory floodway that would rastalt in an increase in base flow/elevations, provided that the communityfirst applies for a conditional FIRM and floodway revision,fulfills the requirements for such• revisions as established under the provisions of§65.12, and receives the approval of the Federal Insurance Administrator. (e)When the Federal Insurance Administrator has provided a notice of final base flood elevations within Zones A1-30 and/or AE on.the comhiunity's FIRM and,if appropriate, has designated AH zones, • AO zones,A99 zones,and A zones on the community's FIRM,and has identified on the community's FIRM coastal high hazard areas by designating Zones V1-30,VE, and/or V, the community shall: (1)Meet the requirements of paragraphs(c)(1)through (14)of this section; • (2)Within Zones V1-30,VE,and V on a community's FIRM, (I)obtain the elevation (in relation to mean sea level)of the bottom of the lowest structural member of the lowest floor(excluding pilings and columns)of all new and.substantially ipnproved structures, and whether or not such structures contain a basement,and(ii)maintain a r'ecbrd of all such information with the official designated by the community under§5,942(4)(90); (3) Provide that all new construction within Zones V1-30,VE, and V on the community's FIRM is located landward'of the reach of Mean high tide; • (4) Provide that all new construction and substantial improvements in Zones V1-30 and VE, and also Zone V if base(flood elevation data is available,on the cbriimunity's FIRM,.are-elevated on pilings and columns So that(i)the bottom of the lowest horizontal structural member of the lowest floor • (excluding the pilings or columns)is elevated to or above the base flood level; and (ii)the pile or column foundation and structure attached thereto is anchored to resist flotation,collapse and lateral movement due to the effects of wind and water loads acting simultaneously on all building components.Water loading values used shall be those associated with the base flood.Wind loading values used shall be • those required by applicable State or local building standards.A registered professional engineer or architect shall develop or review the structural design, specifications and plans for the construction,and shall certify that the design and methods of construction to be used arein accordance with accepted standards of practice for meeting the provisions of paragraphs(e)(4) (i)and (ii)of this section. (5) Provide that all new construction and substantial improvements within Zones V1-30,VE, and V on the community's FIRM have the space below the lowest floor either free of obstruction or constructed with non-supporting breakaway walls, open wood lattice-work, or insect screening intended to collapse under wind and water loads without causing collapse, displacement, or other structural damage to the elevated portion of tlte.building or supporting foundation-System. For the purposes of this section, a breakway wall shall have a design safe loading resistance of not less than 10 and no more than 20 pounds per square foot. Use of breakway walls which exceed a design safe loading resistance of 20 pounds per square foot(either by design or when so required by local or State codes) may be permitted only if a registered professional engineer or architect certifies that the designs proposed meet the following conditions: