Article 23, Sections 23-1-2, 23-3-2, 23-4-1, 23-4-2, 23-4-3

Other

• Anchoring to prevent flotation

  New construction and substantial improvements shall be built according to this ordinance and the VA USBC, and anchored to prevent flotation, collapse, or lateral movement of the structure.

• Total net area of openings1 sqin per 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 square inch for each square foot of enclosed area subject to flooding.

• Flood-resistant materials

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

• Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure size600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.

  Accessory structures... shall be limited to no more than 600 square feet in total floor area.

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

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

• Minimum number of flood openings2 count

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

• On-site waste disposal systems

  On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.

• Opening coverings allowed

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

• Permit required for all development

  All uses, activities, and development occurring within any floodplain district, including placement of manufactured homes, shall be undertaken only upon the issuance of a permit.

• Sanitary sewage systems

  New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters.

• Utility and equipment protection

  Electrical, heating, ventilation, plumbing, air conditioning equipment, and other service facilities, including duct work, shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.

• Water supply systems

  New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system.