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"(1) Have its lowest habitable floor, including <br />basement, at an elevation no lower than the <br />base flood elevation; or <br />"(2) Together with attendant utility and sanitary <br />facilities, be designed so that below the base <br />flood level the structure is watertight with <br />walls substantially impermeable to the passage <br />of water and with structural components having <br />the capability of resisting hydrostatic and <br />hydrodynamic loads and effects of buoyancy. A <br />registered professional engineer or architect <br />shall certify that such floodproofing methods are <br />adequate to withstand the flood depths, pressures, <br />velocities, impact and uplift. <br />"Section 41.12. Specific Standards for Zones Vl-V3.0.. (a) In <br />addition to requirements set forth in Section 41.9, the following <br />standards shall apply to permits for developments within areas <br />designated as zonesVl-V30: <br />"(1) All structures shall be located landward of the <br />reach of the mean high tide. <br />11(2) All structures shall be elevated so that the <br />lowest supporting member is at an elevation no <br />lower than the base flood level, with all spaces <br />below the lowest supporting member open so as <br />not to impede the flow of water, except for <br />breakaway walls, as allowed in Section 41.12(b). <br />1(3) All buildings and structures shall be securely <br />anchored on pilings or columns, which shall be <br />designed and anchored so as to withstand all <br />applied loads of base flood flow. <br />"(4) There shall be no fill used as structural support. <br />"(b) Breakaway walls may be allowed below the base flood ele- <br />vation; provided, that they are not part of the struc- <br />tural support of the building and that they are designed <br />so as to break away under abnormally high tides or wave <br />action, without damage to the structural integrity of <br />the building and its support. Areas enclosed by break- <br />away walls shall not be used for human habitation. <br />"(c) No mobile home shall be allowed to be located within <br />this zone. <br />"(d) Compliance with applicable standards contained in this <br />chapter shall be certified by a registered professional <br />engineer or architect. <br />"Section 41.13. Specific Standards for Mobile Homes. In <br />addition to requirements set forth in Section 41.10 and Sections <br />