Section 6-4011

Other

• Anchoring to prevent flotation, collapse, or lateral movement

  All new and substantially improved structures shall be constructed according to the VA USBC, and anchored to prevent flotation, collapse or lateral movement of the structure.

• ConditionalConditional useAllowed only after a discretionary approval — usually a public hearing and a board vote. letter of map revision required for BFE increase >1 ft

  Development activities in zone AE on the Isle of Wight County FIRMs which increase the water surface elevation of the base flood by more than one (1) foot may be allowed, provided that the applicant first applies - with Isle of Wight County's endorsement - for a conditional letter of map revision and receives the approval of the Federal Emergency Management Agency.

• Elevation certificate required

  The floodplain administrator shall obtain, record, and maintain the actual finished construction elevations of the lowest floor and floodproofing elevations. This information shall be recorded on a current FEMA Elevation Certificate signed and sealed by a professional licensed land surveyor.

• Enclosed areas constructed of flood-resistant materials

  Be constructed entirely of flood-resistant materials below the regulatory floor protection elevation.

• Enclosed areas below regulatory flood protection elevation use restriction

  Fully enclosed areas of new construction or substantially improved structures, which are below regulatory flood protection elevation shall not be designed or used for human habitation, but shall only be used for parking of vehicles, building access or limited storage of maintenance equipment.

• Flexible skirting not considered an enclosure

  Foundation enclosures made of flexible skirting are not considered enclosures for regulatory purposes, and, therefore, do not require openings.

• Flood-resistant materials and utility equipment

  New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.

• Certification of floodproofed nonresidential structures

  For floodproofed nonresidential structures, a licensed professional engineer or architect must certify the structure has been floodproofed.

• Floodproofing for nonresidential structures

  In the case of nonresidential structures, floodproofing to at least that level.

• Maximum increase in base flood elevation1 ft

  New development shall not be permitted unless it is demonstrated that the cumulative effect of all past and projected development will not increase the base flood elevation by more than one (1) foot.

• Minimum nonresidential lowest floor elevation above base flood elevation1 ft

  The lowest floor elevation of any new nonresidential structure constructed within a floodplain area shall be at least one (1) foot above base flood elevation, unless such structure is floodproofed.

• Minimum number of openings on different sides2 openings

  Provide a minimum of two (2) openings on different sides of each enclosed area subject to flooding.

• Minimum residential lowest floor elevation above base flood elevation1.5 ft

  The lowest floor elevation of any new residential structure, including basements, constructed within a floodplain area shall be at least one and one-half (1½) feet above base flood elevation.

• Construction methods to minimize flood damage

  New construction and substantial improvements shall be constructed by methods and practices that minimize flood damage.

• Total net area of openings per square foot of enclosed area1 sqin/sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  The total net area of all openings must be at least one (1) square inch for each square foot of enclosed area subject to flooding.

• Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of bottom of openings above adjacent grade1 ft

  The bottom of all required openings shall be no higher than one (1) foot above the adjacent grade.

• Openings may be equipped with screens, louvers, or other coverings

  Openings may be equipped with screens, louvers, or other opening coverings or devices, provided they permit the automatic flow of floodwaters in both directions.