Sec. 83-423
Dimensional standards
Servicing
- Geographic extent
- All special flood hazard areas as defined in the ordinance
Extracted standards
11 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Floodplain
- Flood opening net area ratio1 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 square inch for each square foot of enclosed area
- Floodproofing elevation above base flood elevation2 ft
floodproofed to the elevation corresponding to the BFE plus two feet
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure floor area600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Accessory structures ... limited to no more than 600 square feet in total floor area
- Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of flood opening bottom above grade1 ft
The bottom of all required openings shall be no higher than one foot above the adjacent grade
- Maximum days recreational vehicle may remain on site180 days
Be on the site for fewer than 180 consecutive days
- Minimum elevation above base flood elevation1.5 ft
lowest floor, including basement, elevated to or above the base flood level plus 18 inches
- Minimum number of flood openings2 count
Provide a minimum of two openings on different sides of each enclosed area
- Subdivision proposal threshold in acresacre43,560 square feet — about the size of an American football field without the end zones.5 acresacre43,560 square feet — about the size of an American football field without the end zones.
exceed 50 lots or five acres
- Subdivision proposal threshold in lots50 lots
exceed 50 lots or five acres
- Substantial improvement threshold percentage of structure value50 pct
does not constitute 50 percent of the structure's value
- Maximum lot size for varianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. consideration0.5 acresacre43,560 square feet — about the size of an American football field without the end zones.
limited to a lot size less than one-half acre
From the ordinance
New construction and substantial improvements shall be built according to this section and the VA USBC, and anchored to prevent flotation, collapse, or lateral movement of the structure.